Remove rewrite header

Improve request ids

Dockerfile

@@ -21,3 +21,4 @@ ENV password=password
 ENV exposeConfigPath=/src/config/expose.php
 
 CMD sed -i "s|username|${username}|g" ${exposeConfigPath} && sed -i "s|password|${password}|g" ${exposeConfigPath} && php expose serve ${domain} --port ${port} --validateAuthTokens
+ENTRYPOINT ["/src/expose"]

app/Client/Client.php

@@ -45,26 +45,26 @@ class Client
         $sharedUrl = $this->prepareSharedUrl($sharedUrl);
 
         foreach ($subdomains as $subdomain) {
-            $this->connectToServer($sharedUrl, $subdomain, config('expose.auth_token'));
+            $this->connectToServer($sharedUrl, $subdomain, $this->configuration->auth());
         }
     }
 
+    public function sharePort(int $port)
+    {
+        $this->connectToServerAndShareTcp($port, $this->configuration->auth());
+    }
+
     protected function prepareSharedUrl(string $sharedUrl): string
     {
         if (! $parsedUrl = parse_url($sharedUrl)) {
             return $sharedUrl;
         }
 
-        $url = Arr::get($parsedUrl, 'host', Arr::get($parsedUrl, 'path'));
+        $host = Arr::get($parsedUrl, 'host', Arr::get($parsedUrl, 'path', 'localhost'));
+        $scheme = Arr::get($parsedUrl, 'scheme', 'http');
+        $port = Arr::get($parsedUrl, 'port', $scheme === 'https' ? 443 : 80);
 
-        if (Arr::get($parsedUrl, 'scheme') === 'https') {
-            $url .= ':443';
-        }
-        if (! is_null($port = Arr::get($parsedUrl, 'port'))) {
-            $url .= ":{$port}";
-        }
-
-        return $url;
+        return sprintf('%s://%s:%s', $scheme, $host, $port);
     }
 
     public function connectToServer(string $sharedUrl, $subdomain, $authToken = ''): PromiseInterface
@@ -87,14 +87,12 @@ class Client
                 $clientConnection->on('close', function () use ($sharedUrl, $subdomain, $authToken) {
                     $this->logger->error('Connection to server closed.');
 
-                    $this->retryConnectionOrExit($sharedUrl, $subdomain, $authToken);
+                    $this->retryConnectionOrExit(function () use ($sharedUrl, $subdomain, $authToken) {
+                        $this->connectToServer($sharedUrl, $subdomain, $authToken);
+                    });
                 });
 
-                $connection->on('authenticationFailed', function ($data) use ($deferred) {
-                    $this->logger->error($data->message);
-
-                    $this->exit($deferred);
-                });
+                $this->attachCommonConnectionListeners($connection, $deferred);
 
                 $connection->on('subdomainTaken', function ($data) use ($deferred) {
                     $this->logger->error($data->message);
@@ -102,20 +100,6 @@ class Client
                     $this->exit($deferred);
                 });
 
-                $connection->on('setMaximumConnectionLength', function ($data) {
-                    $timeoutSection = $this->logger->getOutput()->section();
-
-                    $this->loop->addPeriodicTimer(1, function () use ($data, $timeoutSection) {
-                        $this->timeConnected++;
-
-                        $secondsRemaining = $data->length * 60 - $this->timeConnected;
-                        $remaining = Carbon::now()->diff(Carbon::now()->addSeconds($secondsRemaining));
-
-                        $timeoutSection->clear();
-                        $timeoutSection->writeln('Remaining time: '.$remaining->format('%H:%I:%S'));
-                    });
-                });
-
                 $connection->on('authenticated', function ($data) use ($deferred, $sharedUrl) {
                     $httpProtocol = $this->configuration->port() === 443 ? 'https' : 'http';
                     $host = $this->configuration->host();
@@ -136,7 +120,9 @@ class Client
                 });
             }, function (\Exception $e) use ($deferred, $sharedUrl, $subdomain, $authToken) {
                 if ($this->connectionRetries > 0) {
-                    $this->retryConnectionOrExit($sharedUrl, $subdomain, $authToken);
+                    $this->retryConnectionOrExit(function () use ($sharedUrl, $subdomain, $authToken) {
+                        $this->connectToServer($sharedUrl, $subdomain, $authToken);
+                    });
 
                     return;
                 }
@@ -149,6 +135,92 @@ class Client
         return $promise;
     }
 
+    public function connectToServerAndShareTcp(int $port, $authToken = ''): PromiseInterface
+    {
+        $deferred = new Deferred();
+        $promise = $deferred->promise();
+
+        $wsProtocol = $this->configuration->port() === 443 ? 'wss' : 'ws';
+
+        connect($wsProtocol."://{$this->configuration->host()}:{$this->configuration->port()}/expose/control?authToken={$authToken}", [], [
+            'X-Expose-Control' => 'enabled',
+        ], $this->loop)
+            ->then(function (WebSocket $clientConnection) use ($port, $deferred, $authToken) {
+                $this->connectionRetries = 0;
+
+                $connection = ControlConnection::create($clientConnection);
+
+                $connection->authenticateTcp($port);
+
+                $this->attachCommonConnectionListeners($connection, $deferred);
+
+                $clientConnection->on('close', function () use ($port, $authToken) {
+                    $this->logger->error('Connection to server closed.');
+
+                    $this->retryConnectionOrExit(function () use ($port, $authToken) {
+                        $this->connectToServerAndShareTcp($port, $authToken);
+                    });
+                });
+
+                $connection->on('authenticated', function ($data) use ($deferred, $port) {
+                    $host = $this->configuration->host();
+
+                    $this->logger->info($data->message);
+                    $this->logger->info("Local-Port:\t\t{$port}");
+                    $this->logger->info("Shared-Port:\t\t{$data->shared_port}");
+                    $this->logger->info("Expose-URL:\t\ttcp://{$host}:{$data->shared_port}.");
+                    $this->logger->line('');
+
+                    $deferred->resolve($data);
+                });
+            }, function (\Exception $e) use ($deferred, $port, $authToken) {
+                if ($this->connectionRetries > 0) {
+                    $this->retryConnectionOrExit(function () use ($port, $authToken) {
+                        $this->connectToServerAndShareTcp($port, $authToken);
+                    });
+
+                    return;
+                }
+                $this->logger->error('Could not connect to the server.');
+                $this->logger->error($e->getMessage());
+
+                $this->exit($deferred);
+            });
+
+        return $promise;
+    }
+
+    protected function attachCommonConnectionListeners(ControlConnection $connection, Deferred $deferred)
+    {
+        $connection->on('info', function ($data) {
+            $this->logger->info($data->message);
+        });
+
+        $connection->on('error', function ($data) {
+            $this->logger->error($data->message);
+        });
+
+        $connection->on('authenticationFailed', function ($data) use ($deferred) {
+            $this->logger->error($data->message);
+
+            $this->exit($deferred);
+        });
+
+        $connection->on('setMaximumConnectionLength', function ($data) {
+            $timeoutSection = $this->logger->getOutput()->section();
+
+            $this->loop->addPeriodicTimer(1, function () use ($data, $timeoutSection) {
+                $this->timeConnected++;
+
+                $secondsRemaining = $data->length * 60 - $this->timeConnected;
+                $remaining = Carbon::now()->diff(Carbon::now()->addSeconds($secondsRemaining));
+
+                $timeoutSection->clear();
+                $timeoutSection->writeln('Remaining time: '.$remaining->format('%H:%I:%S'));
+            });
+        });
+    }
+
     protected function exit(Deferred $deferred)
     {
         $deferred->reject();
@@ -158,15 +230,15 @@ class Client
         });
     }
 
-    protected function retryConnectionOrExit(string $sharedUrl, $subdomain, $authToken = '')
+    protected function retryConnectionOrExit(callable $retry)
     {
         $this->connectionRetries++;
 
         if ($this->connectionRetries <= static::MAX_CONNECTION_RETRIES) {
-            $this->loop->addTimer($this->connectionRetries, function () use ($sharedUrl, $subdomain, $authToken) {
+            $this->loop->addTimer($this->connectionRetries, function () use ($retry) {
                 $this->logger->info("Retrying connection ({$this->connectionRetries}/".static::MAX_CONNECTION_RETRIES.')');
 
-                $this->connectToServer($sharedUrl, $subdomain, $authToken);
+                $retry();
             });
         } else {
             exit(1);

app/Client/Configuration.php

@@ -36,4 +36,16 @@ class Configuration
     {
         return intval($this->port);
     }
+
+    public function getUrl(string $subdomain): string
+    {
+        $httpProtocol = $this->port() === 443 ? 'https' : 'http';
+        $host = $this->host();
+
+        if ($httpProtocol !== 'https') {
+            $host .= ":{$this->port()}";
+        }
+
+        return "{$subdomain}.{$host}";
+    }
 }

app/Client/Connections/ControlConnection.php

@@ -52,17 +52,34 @@ class ControlConnection
         $this->proxyManager->createProxy($this->clientId, $data);
     }
 
+    public function createTcpProxy($data)
+    {
+        $this->proxyManager->createTcpProxy($this->clientId, $data);
+    }
+
     public function authenticate(string $sharedHost, string $subdomain)
     {
         $this->socket->send(json_encode([
             'event' => 'authenticate',
             'data' => [
+                'type' => 'http',
                 'host' => $sharedHost,
                 'subdomain' => empty($subdomain) ? null : $subdomain,
             ],
         ]));
     }
 
+    public function authenticateTcp(int $port)
+    {
+        $this->socket->send(json_encode([
+            'event' => 'authenticate',
+            'data' => [
+                'type' => 'tcp',
+                'port' => $port,
+            ],
+        ]));
+    }
+
     public function ping()
     {
         $this->socket->send(json_encode([

app/Client/Factory.php

@@ -109,6 +109,13 @@ class Factory
         return $this;
     }
 
+    public function sharePort(int $port)
+    {
+        app('expose.client')->sharePort($port);
+
+        return $this;
+    }
+
     protected function addRoutes()
     {
         $this->router->get('/', DashboardController::class);

app/Client/Http/HttpClient.php

@@ -2,6 +2,7 @@
 
 namespace App\Client\Http;
 
+use App\Client\Configuration;
 use App\Client\Http\Modifiers\CheckBasicAuthentication;
 use App\Logger\RequestLogger;
 use Clue\React\Buzz\Browser;
@@ -10,10 +11,12 @@ use function GuzzleHttp\Psr7\str;
 use Laminas\Http\Request;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
 use Ratchet\Client\WebSocket;
 use Ratchet\RFC6455\Messaging\Frame;
 use React\EventLoop\LoopInterface;
 use React\Socket\Connector;
+use React\Stream\ReadableStreamInterface;
 
 class HttpClient
 {
@@ -26,19 +29,26 @@ class HttpClient
     /** @var Request */
     protected $request;
 
+    protected $connectionData;
+
     /** @var array */
     protected $modifiers = [
         CheckBasicAuthentication::class,
     ];
+    /** @var Configuration */
+    protected $configuration;
 
-    public function __construct(LoopInterface $loop, RequestLogger $logger)
+    public function __construct(LoopInterface $loop, RequestLogger $logger, Configuration $configuration)
     {
         $this->loop = $loop;
         $this->logger = $logger;
+        $this->configuration = $configuration;
     }
 
-    public function performRequest(string $requestData, WebSocket $proxyConnection = null, string $requestId = null)
+    public function performRequest(string $requestData, WebSocket $proxyConnection = null, $connectionData = null)
     {
+        $this->connectionData = $connectionData;
+
         $this->request = $this->parseRequest($requestData);
 
         $this->logger->logRequest($requestData, $this->request);
@@ -66,7 +76,6 @@ class HttpClient
     protected function createConnector(): Connector
     {
         return new Connector($this->loop, [
-            'dns' => '127.0.0.1',
             'tls' => [
                 'verify_peer' => false,
                 'verify_peer_name' => false,
@@ -77,12 +86,9 @@ class HttpClient
     protected function sendRequestToApplication(RequestInterface $request, $proxyConnection = null)
     {
         (new Browser($this->loop, $this->createConnector()))
-            ->withOptions([
-                'followRedirects' => false,
-                'obeySuccessCode' => false,
-                'streaming' => true,
-            ])
-            ->send($request)
+            ->withFollowRedirects(false)
+            ->withRejectErrorResponse(false)
+            ->requestStreaming($request->getMethod(), $this->getExposeUri($request), $request->getHeaders(), $request->getBody())
             ->then(function (ResponseInterface $response) use ($proxyConnection) {
                 if (! isset($response->buffer)) {
                     $response->buffer = str($response);
@@ -90,7 +96,7 @@ class HttpClient
 
                 $this->sendChunkToServer($response->buffer, $proxyConnection);
 
-                /* @var $body \React\Stream\ReadableStreamInterface */
+                /* @var $body ReadableStreamInterface */
                 $body = $response->getBody();
 
                 $this->logResponse(str($response));
@@ -126,4 +132,15 @@ class HttpClient
     {
         return Request::fromString($data);
     }
+
+    private function getExposeUri(RequestInterface $request): UriInterface
+    {
+        $exposeProto = $request->getHeader('x-expose-proto')[0];
+        $exposeHost = explode(':', $request->getHeader('x-expose-host')[0]);
+
+        return $request->getUri()
+            ->withScheme($exposeProto)
+            ->withHost($exposeHost[0])
+            ->withPort($exposeHost[1]);
+    }
 }

app/Client/ProxyManager.php

@@ -5,7 +5,9 @@ namespace App\Client;
 use App\Client\Http\HttpClient;
 use function Ratchet\Client\connect;
 use Ratchet\Client\WebSocket;
+use Ratchet\RFC6455\Messaging\Frame;
 use React\EventLoop\LoopInterface;
+use React\Socket\Connector;
 
 class ProxyManager
 {
@@ -30,7 +32,7 @@ class ProxyManager
         ], $this->loop)
             ->then(function (WebSocket $proxyConnection) use ($clientId, $connectionData) {
                 $proxyConnection->on('message', function ($message) use ($proxyConnection, $connectionData) {
-                    $this->performRequest($proxyConnection, $connectionData->request_id, (string) $message);
+                    $this->performRequest($proxyConnection, (string) $message, $connectionData);
                 });
 
                 $proxyConnection->send(json_encode([
@@ -43,8 +45,39 @@ class ProxyManager
             });
     }
 
-    protected function performRequest(WebSocket $proxyConnection, $requestId, string $requestData)
+    public function createTcpProxy(string $clientId, $connectionData)
     {
-        app(HttpClient::class)->performRequest((string) $requestData, $proxyConnection, $requestId);
+        $protocol = $this->configuration->port() === 443 ? 'wss' : 'ws';
+
+        connect($protocol."://{$this->configuration->host()}:{$this->configuration->port()}/expose/control", [], [
+            'X-Expose-Control' => 'enabled',
+        ], $this->loop)
+            ->then(function (WebSocket $proxyConnection) use ($clientId, $connectionData) {
+                $connector = new Connector($this->loop);
+
+                $connector->connect('127.0.0.1:'.$connectionData->port)->then(function ($connection) use ($proxyConnection) {
+                    $connection->on('data', function ($data) use ($proxyConnection) {
+                        $binaryMsg = new Frame($data, true, Frame::OP_BINARY);
+                        $proxyConnection->send($binaryMsg);
+                    });
+
+                    $proxyConnection->on('message', function ($message) use ($connection) {
+                        $connection->write($message);
+                    });
+                });
+
+                $proxyConnection->send(json_encode([
+                    'event' => 'registerTcpProxy',
+                    'data' => [
+                        'tcp_request_id' => $connectionData->tcp_request_id ?? null,
+                        'client_id' => $clientId,
+                    ],
+                ]));
+            });
+    }
+
+    protected function performRequest(WebSocket $proxyConnection, string $requestData, $connectionData)
+    {
+        app(HttpClient::class)->performRequest((string) $requestData, $proxyConnection, $connectionData);
     }
 }

app/Commands/ShareCommand.php

@@ -10,7 +10,7 @@ use Symfony\Component\Console\Output\ConsoleOutput;
 
 class ShareCommand extends Command
 {
-    protected $signature = 'share {host} {--subdomain=} {--auth=}';
+    protected $signature = 'share {host} {--subdomain=} {--auth=} {--server-host=} {--server-port=}';
 
     protected $description = 'Share a local url with a remote expose server';
 
@@ -27,11 +27,15 @@ class ShareCommand extends Command
     {
         $this->configureConnectionLogger();
 
+        $serverHost = $this->option('server-host') ?? config('expose.host', 'localhost');
+        $serverPort = $this->option('server-port') ?? config('expose.port', 8080);
+        $auth = $this->option('auth') ?? config('expose.auth_token', '');
+
         (new Factory())
             ->setLoop(app(LoopInterface::class))
-            ->setHost(config('expose.host', 'localhost'))
-            ->setPort(config('expose.port', 8080))
-            ->setAuth($this->option('auth'))
+            ->setHost($serverHost)
+            ->setPort($serverPort)
+            ->setAuth($auth)
             ->createClient()
             ->share($this->argument('host'), explode(',', $this->option('subdomain')))
             ->createHttpServer()

app/Commands/ShareCurrentWorkingDirectoryCommand.php

@@ -4,7 +4,7 @@ namespace App\Commands;
 
 class ShareCurrentWorkingDirectoryCommand extends ShareCommand
 {
-    protected $signature = 'share-cwd {host?} {--subdomain=} {--auth=}';
+    protected $signature = 'share-cwd {host?} {--subdomain=} {--auth=} {--server-host=} {--server-port=}';
 
     public function handle()
     {

app/Commands/SharePortCommand.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Commands;
+
+use App\Client\Factory;
+use App\Logger\CliRequestLogger;
+use LaravelZero\Framework\Commands\Command;
+use React\EventLoop\LoopInterface;
+use Symfony\Component\Console\Output\ConsoleOutput;
+
+class SharePortCommand extends Command
+{
+    protected $signature = 'share-port {port} {--auth=}';
+
+    protected $description = 'Share a local port with a remote expose server';
+
+    protected function configureConnectionLogger()
+    {
+        app()->bind(CliRequestLogger::class, function () {
+            return new CliRequestLogger(new ConsoleOutput());
+        });
+
+        return $this;
+    }
+
+    public function handle()
+    {
+        $this->configureConnectionLogger();
+
+        (new Factory())
+            ->setLoop(app(LoopInterface::class))
+            ->setHost(config('expose.host', 'localhost'))
+            ->setPort(config('expose.port', 8080))
+            ->setAuth($this->option('auth'))
+            ->createClient()
+            ->sharePort($this->argument('port'))
+            ->createHttpServer()
+            ->run();
+    }
+}

app/Contracts/ConnectionManager.php

@@ -10,6 +10,8 @@ interface ConnectionManager
 {
     public function storeConnection(string $host, ?string $subdomain, ConnectionInterface $connection): ControlConnection;
 
+    public function storeTcpConnection(int $port, ConnectionInterface $connection): ControlConnection;
+
     public function limitConnectionLength(ControlConnection $connection, int $maximumConnectionLength);
 
     public function storeHttpConnection(ConnectionInterface $httpConnection, $requestId): HttpConnection;
@@ -25,4 +27,6 @@ interface ConnectionManager
     public function getConnections(): array;
 
     public function getConnectionsForAuthToken(string $authToken): array;
+
+    public function getTcpConnectionsForAuthToken(string $authToken): array;
 }

app/Contracts/SubdomainRepository.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Contracts;
+
+use React\Promise\PromiseInterface;
+
+interface SubdomainRepository
+{
+    public function getSubdomains(): PromiseInterface;
+
+    public function getSubdomainById($id): PromiseInterface;
+
+    public function getSubdomainByName(string $name): PromiseInterface;
+
+    public function getSubdomainsByUserId($id): PromiseInterface;
+
+    public function getSubdomainsByUserIdAndName($id, $name): PromiseInterface;
+
+    public function deleteSubdomainForUserId($userId, $subdomainId): PromiseInterface;
+
+    public function storeSubdomain(array $data): PromiseInterface;
+}

app/Logger/LoggedRequest.php

@@ -19,11 +19,8 @@ class LoggedRequest implements \JsonSerializable
     /** @var Request */
     protected $parsedRequest;
 
-    /** @var string */
-    protected $rawResponse;
-
-    /** @var Response */
-    protected $parsedResponse;
+    /** @var LoggedResponse */
+    protected $response;
 
     /** @var string */
     protected $id;
@@ -71,22 +68,8 @@ class LoggedRequest implements \JsonSerializable
             ],
         ];
 
-        if ($this->parsedResponse) {
-            $logBody = $this->shouldReturnBody();
-
-            try {
-                $body = $logBody ? $this->parsedResponse->getBody() : '';
-            } catch (\Exception $e) {
-                $body = '';
-            }
-
-            $data['response'] = [
-                'raw' => $logBody ? $this->rawResponse : 'SKIPPED BY CONFIG OR BINARY RESPONSE',
-                'status' => $this->parsedResponse->getStatusCode(),
-                'headers' => $this->parsedResponse->getHeaders()->toArray(),
-                'reason' => $this->parsedResponse->getReasonPhrase(),
-                'body' => $logBody ? $body : 'SKIPPED BY CONFIG OR BINARY RESPONSE',
-            ];
+        if ($this->response) {
+            $data['response'] = $this->response->toArray();
         }
 
         return $data;
@@ -107,96 +90,6 @@ class LoggedRequest implements \JsonSerializable
         return preg_match('~[^\x20-\x7E\t\r\n]~', $string) > 0;
     }
 
-    protected function shouldReturnBody(): bool
-    {
-        if ($this->skipByStatus()) {
-            return false;
-        }
-
-        if ($this->skipByContentType()) {
-            return false;
-        }
-
-        if ($this->skipByExtension()) {
-            return false;
-        }
-
-        if ($this->skipBySize()) {
-            return false;
-        }
-
-        $header = $this->parsedResponse->getHeaders()->get('Content-Type');
-        $contentType = $header ? $header->getMediaType() : '';
-        $patterns = [
-            'application/json',
-            'text/*',
-            '*javascript*',
-        ];
-
-        return Str::is($patterns, $contentType);
-    }
-
-    protected function skipByStatus(): bool
-    {
-        if (empty(config()->get('expose.skip_body_log.status'))) {
-            return false;
-        }
-
-        return Str::is(config()->get('expose.skip_body_log.status'), $this->parsedResponse->getStatusCode());
-    }
-
-    protected function skipByContentType(): bool
-    {
-        if (empty(config()->get('expose.skip_body_log.content_type'))) {
-            return false;
-        }
-
-        $header = $this->parsedResponse->getHeaders()->get('Content-Type');
-        $contentType = $header ? $header->getMediaType() : '';
-
-        return Str::is(config()->get('expose.skip_body_log.content_type'), $contentType);
-    }
-
-    protected function skipByExtension(): bool
-    {
-        if (empty(config()->get('expose.skip_body_log.extension'))) {
-            return false;
-        }
-
-        return Str::is(config()->get('expose.skip_body_log.extension'), $this->parsedRequest->getUri()->getPath());
-    }
-
-    protected function skipBySize(): bool
-    {
-        $configSize = $this->getConfigSize(config()->get('expose.skip_body_log.size', '1MB'));
-        $contentLength = $this->parsedResponse->getHeaders()->get('Content-Length');
-
-        if (! $contentLength) {
-            return false;
-        }
-
-        $contentSize = $contentLength->getFieldValue() ?? 0;
-
-        return $contentSize > $configSize;
-    }
-
-    protected function getConfigSize(string $size): int
-    {
-        $units = ['B', 'KB', 'MB', 'GB'];
-        $number = substr($size, 0, -2);
-        $suffix = strtoupper(substr($size, -2));
-
-        // B or no suffix
-        if (is_numeric(substr($suffix, 0, 1))) {
-            return preg_replace('/[^\d]/', '', $size);
-        }
-
-        // if we have an error in the input, default to GB
-        $exponent = array_flip($units)[$suffix] ?? 5;
-
-        return $number * (1024 ** $exponent);
-    }
-
     public function getRequest()
     {
         return $this->parsedRequest;
@@ -204,9 +97,7 @@ class LoggedRequest implements \JsonSerializable
 
     public function setResponse(string $rawResponse, Response $response)
     {
-        $this->parsedResponse = $response;
-
-        $this->rawResponse = $rawResponse;
+        $this->response = new LoggedResponse($rawResponse, $response, $this->getRequest());
 
         if (is_null($this->stopTime)) {
             $this->stopTime = now();
@@ -223,9 +114,9 @@ class LoggedRequest implements \JsonSerializable
         return $this->rawRequest;
     }
 
-    public function getResponse(): ?Response
+    public function getResponse(): ?LoggedResponse
     {
-        return $this->parsedResponse;
+        return $this->response;
     }
 
     public function getPostData()

app/Logger/LoggedResponse.php

@@ -0,0 +1,160 @@
+<?php
+
+namespace App\Logger;
+
+use Illuminate\Support\Str;
+use Laminas\Http\Request;
+use Laminas\Http\Response;
+
+class LoggedResponse
+{
+    /** @var string */
+    protected $rawResponse;
+
+    /** @var Response */
+    protected $response;
+
+    /** @var Request */
+    protected $request;
+
+    protected $reasonPhrase;
+    protected $body;
+    protected $statusCode;
+    protected $headers;
+
+    public function __construct(string $rawResponse, Response $response, Request $request)
+    {
+        $this->rawResponse = $rawResponse;
+        $this->response = $response;
+        $this->request = $request;
+
+        if (! $this->shouldReturnBody()) {
+            $this->rawResponse = 'SKIPPED BY CONFIG OR BINARY RESPONSE';
+            $this->body = 'SKIPPED BY CONFIG OR BINARY RESPONSE';
+        } else {
+            try {
+                $this->body = $response->getBody();
+            } catch (\Exception $e) {
+                $this->body = '';
+            }
+        }
+
+        $this->statusCode = $response->getStatusCode();
+        $this->reasonPhrase = $response->getReasonPhrase();
+        $this->headers = $response->getHeaders()->toArray();
+
+        $this->response = null;
+        $this->request = null;
+    }
+
+    protected function shouldReturnBody(): bool
+    {
+        if ($this->skipByStatus()) {
+            return false;
+        }
+
+        if ($this->skipByContentType()) {
+            return false;
+        }
+
+        if ($this->skipByExtension()) {
+            return false;
+        }
+
+        if ($this->skipBySize()) {
+            return false;
+        }
+
+        $header = $this->response->getHeaders()->get('Content-Type');
+        $contentType = $header ? $header->getMediaType() : '';
+        $patterns = [
+            'application/json',
+            'text/*',
+            '*javascript*',
+        ];
+
+        return Str::is($patterns, $contentType);
+    }
+
+    protected function skipByStatus(): bool
+    {
+        if (empty(config()->get('expose.skip_body_log.status'))) {
+            return false;
+        }
+
+        return Str::is(config()->get('expose.skip_body_log.status'), $this->response->getStatusCode());
+    }
+
+    protected function skipByContentType(): bool
+    {
+        if (empty(config()->get('expose.skip_body_log.content_type'))) {
+            return false;
+        }
+
+        $header = $this->response->getHeaders()->get('Content-Type');
+        $contentType = $header ? $header->getMediaType() : '';
+
+        return Str::is(config()->get('expose.skip_body_log.content_type'), $contentType);
+    }
+
+    protected function skipByExtension(): bool
+    {
+        if (empty(config()->get('expose.skip_body_log.extension'))) {
+            return false;
+        }
+
+        return Str::is(config()->get('expose.skip_body_log.extension'), $this->request->getUri()->getPath());
+    }
+
+    protected function skipBySize(): bool
+    {
+        $configSize = $this->getConfigSize(config()->get('expose.skip_body_log.size', '1MB'));
+        $contentLength = $this->response->getHeaders()->get('Content-Length');
+
+        if (! $contentLength) {
+            return false;
+        }
+
+        $contentSize = $contentLength->getFieldValue() ?? 0;
+
+        return $contentSize > $configSize;
+    }
+
+    protected function getConfigSize(string $size): int
+    {
+        $units = ['B', 'KB', 'MB', 'GB'];
+        $number = substr($size, 0, -2);
+        $suffix = strtoupper(substr($size, -2));
+
+        // B or no suffix
+        if (is_numeric(substr($suffix, 0, 1))) {
+            return preg_replace('/[^\d]/', '', $size);
+        }
+
+        // if we have an error in the input, default to GB
+        $exponent = array_flip($units)[$suffix] ?? 5;
+
+        return $number * (1024 ** $exponent);
+    }
+
+    public function getStatusCode()
+    {
+        return $this->statusCode;
+    }
+
+    public function getReasonPhrase()
+    {
+        return $this->reasonPhrase;
+    }
+
+    public function toArray()
+    {
+        return [
+            'raw' => $this->rawResponse,
+            'status' => $this->statusCode,
+            'headers' => $this->headers,
+            'reason' => $this->reasonPhrase,
+            'body' => $this->body,
+        ];
+    }
+}

app/Providers/AppServiceProvider.php

@@ -37,6 +37,14 @@ class AppServiceProvider extends ServiceProvider
     {
         $builtInConfig = config('expose');
 
+        $keyServerVariable = 'EXPOSE_CONFIG_FILE';
+        if (array_key_exists($keyServerVariable, $_SERVER) && is_string($_SERVER[$keyServerVariable]) && file_exists($_SERVER[$keyServerVariable])) {
+            $localConfig = require $_SERVER[$keyServerVariable];
+            config()->set('expose', array_merge($builtInConfig, $localConfig));
+
+            return;
+        }
+
         $localConfigFile = getcwd().DIRECTORY_SEPARATOR.'.expose.php';
 
         if (file_exists($localConfigFile)) {

app/Server/Connections/ConnectionManager.php

@@ -5,8 +5,10 @@ namespace App\Server\Connections;
 use App\Contracts\ConnectionManager as ConnectionManagerContract;
 use App\Contracts\SubdomainGenerator;
 use App\Http\QueryParameters;
+use App\Server\Exceptions\NoFreePortAvailable;
 use Ratchet\ConnectionInterface;
 use React\EventLoop\LoopInterface;
+use React\Socket\Server;
 
 class ConnectionManager implements ConnectionManagerContract
 {
@@ -43,14 +45,31 @@ class ConnectionManager implements ConnectionManagerContract
 
     public function storeConnection(string $host, ?string $subdomain, ConnectionInterface $connection): ControlConnection
     {
-        $clientId = (string) uniqid();
-
-        $connection->client_id = $clientId;
+        $connection->client_id = sha1(uniqid('', true));
 
         $storedConnection = new ControlConnection(
             $connection,
             $host,
             $subdomain ?? $this->subdomainGenerator->generateSubdomain(),
+            $connection->client_id,
+            $this->getAuthTokenFromConnection($connection)
+        );
+
+        $this->connections[] = $storedConnection;
+
+        return $storedConnection;
+    }
+
+    public function storeTcpConnection(int $port, ConnectionInterface $connection): ControlConnection
+    {
+        $clientId = (string) uniqid();
+
+        $connection->client_id = $clientId;
+
+        $storedConnection = new TcpControlConnection(
+            $connection,
+            $port,
+            $this->getSharedTcpServer(),
             $clientId,
             $this->getAuthTokenFromConnection($connection)
         );
@@ -60,6 +79,30 @@ class ConnectionManager implements ConnectionManagerContract
         return $storedConnection;
     }
 
+    protected function getSharedTcpServer(): Server
+    {
+        $portRange = config('expose.admin.tcp_port_range');
+
+        $port = $portRange['from'] ?? 50000;
+        $maxPort = $portRange['to'] ?? 60000;
+
+        do {
+            try {
+                $portFound = true;
+                $server = new Server('0.0.0.0:'.$port, $this->loop);
+            } catch (\RuntimeException $exception) {
+                $portFound = false;
+                $port++;
+
+                if ($port > $maxPort) {
+                    throw new NoFreePortAvailable();
+                }
+            }
+        } while (! $portFound);
+
+        return $server;
+    }
+
     public function storeHttpConnection(ConnectionInterface $httpConnection, $requestId): HttpConnection
     {
         $this->httpConnections[$requestId] = new HttpConnection($httpConnection);
@@ -82,6 +125,16 @@ class ConnectionManager implements ConnectionManagerContract
 
         if (isset($connection->client_id)) {
             $clientId = $connection->client_id;
+
+            $controlConnection = collect($this->connections)->first(function ($connection) use ($clientId) {
+                return $connection->client_id == $clientId;
+            });
+
+            if ($controlConnection instanceof TcpControlConnection) {
+                $controlConnection->stop();
+                $controlConnection = null;
+            }
+
             $this->connections = collect($this->connections)->reject(function ($connection) use ($clientId) {
                 return $connection->client_id == $clientId;
             })->toArray();
@@ -118,9 +171,29 @@ class ConnectionManager implements ConnectionManagerContract
             ->filter(function ($connection) use ($authToken) {
                 return $connection->authToken === $authToken;
             })
+            ->filter(function ($connection) {
+                return get_class($connection) === ControlConnection::class;
+            })
             ->map(function ($connection) {
                 return $connection->toArray();
             })
+            ->values()
+            ->toArray();
+    }
+
+    public function getTcpConnectionsForAuthToken(string $authToken): array
+    {
+        return collect($this->connections)
+            ->filter(function ($connection) use ($authToken) {
+                return $connection->authToken === $authToken;
+            })
+            ->filter(function ($connection) {
+                return get_class($connection) === TcpControlConnection::class;
+            })
+            ->map(function ($connection) {
+                return $connection->toArray();
+            })
+            ->values()
             ->toArray();
     }
 }

app/Server/Connections/ControlConnection.php

@@ -43,6 +43,8 @@ class ControlConnection
         $this->socket->send(json_encode([
             'event' => 'createProxy',
             'data' => [
+                'host' => $this->host,
+                'subdomain' => $this->subdomain,
                 'request_id' => $requestId,
                 'client_id' => $this->client_id,
             ],
@@ -57,6 +59,7 @@ class ControlConnection
     public function toArray()
     {
         return [
+            'type' => 'http',
             'host' => $this->host,
             'client_id' => $this->client_id,
             'auth_token' => $this->authToken,

app/Server/Connections/TcpControlConnection.php

@@ -0,0 +1,107 @@
+<?php
+
+namespace App\Server\Connections;
+
+use Ratchet\ConnectionInterface;
+use Ratchet\RFC6455\Messaging\Frame;
+use React\Socket\Server;
+
+class TcpControlConnection extends ControlConnection
+{
+    public $proxy;
+    public $proxyConnection;
+    public $port;
+    public $shared_port;
+    public $shared_server;
+
+    public function __construct(ConnectionInterface $socket, int $port, Server $sharedServer, string $clientId, string $authToken = '')
+    {
+        $this->socket = $socket;
+        $this->client_id = $clientId;
+        $this->shared_server = $sharedServer;
+        $this->port = $port;
+        $this->shared_at = now()->toDateTimeString();
+        $this->shared_port = parse_url($sharedServer->getAddress(), PHP_URL_PORT);
+        $this->authToken = $authToken;
+
+        $this->configureServer($sharedServer);
+    }
+
+    public function setMaximumConnectionLength(int $maximumConnectionLength)
+    {
+        $this->socket->send(json_encode([
+            'event' => 'setMaximumConnectionLength',
+            'data' => [
+                'length' => $maximumConnectionLength,
+            ],
+        ]));
+    }
+
+    public function registerProxy($requestId)
+    {
+        $this->socket->send(json_encode([
+            'event' => 'createProxy',
+            'data' => [
+                'request_id' => $requestId,
+                'client_id' => $this->client_id,
+            ],
+        ]));
+    }
+
+    public function registerTcpProxy($requestId)
+    {
+        $this->socket->send(json_encode([
+            'event' => 'createTcpProxy',
+            'data' => [
+                'port' => $this->port,
+                'tcp_request_id' => $requestId,
+                'client_id' => $this->client_id,
+            ],
+        ]));
+    }
+
+    public function stop()
+    {
+        $this->shared_server->close();
+        $this->shared_server = null;
+    }
+
+    public function close()
+    {
+        $this->socket->close();
+    }
+
+    public function toArray()
+    {
+        return [
+            'type' => 'tcp',
+            'port' => $this->port,
+            'client_id' => $this->client_id,
+            'shared_port' => $this->shared_port,
+            'shared_at' => $this->shared_at,
+        ];
+    }
+
+    protected function configureServer(Server $sharedServer)
+    {
+        $requestId = uniqid();
+
+        $sharedServer->on('connection', function (\React\Socket\ConnectionInterface $connection) use ($requestId) {
+            $this->proxyConnection = $connection;
+
+            $this->once('tcp_proxy_ready_'.$requestId, function (ConnectionInterface $proxy) use ($connection) {
+                $this->proxy = $proxy;
+
+                $connection->on('data', function ($data) use ($proxy) {
+                    $binaryMsg = new Frame($data, true, Frame::OP_BINARY);
+                    $proxy->send($binaryMsg);
+                });
+
+                $connection->resume();
+            });
+
+            $connection->pause();
+            $this->registerTcpProxy($requestId);
+        });
+    }
+}

app/Server/Exceptions/NoFreePortAvailable.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace App\Server\Exceptions;
+
+class NoFreePortAvailable extends \Exception
+{
+}

app/Server/Factory.php

@@ -4,21 +4,27 @@ namespace App\Server;
 
 use App\Contracts\ConnectionManager as ConnectionManagerContract;
 use App\Contracts\SubdomainGenerator;
+use App\Contracts\SubdomainRepository;
 use App\Contracts\UserRepository;
 use App\Http\RouteGenerator;
 use App\Http\Server as HttpServer;
 use App\Server\Connections\ConnectionManager;
+use App\Server\Http\Controllers\Admin\DeleteSubdomainController;
 use App\Server\Http\Controllers\Admin\DeleteUsersController;
 use App\Server\Http\Controllers\Admin\DisconnectSiteController;
+use App\Server\Http\Controllers\Admin\DisconnectTcpConnectionController;
 use App\Server\Http\Controllers\Admin\GetSettingsController;
 use App\Server\Http\Controllers\Admin\GetSitesController;
+use App\Server\Http\Controllers\Admin\GetTcpConnectionsController;
 use App\Server\Http\Controllers\Admin\GetUserDetailsController;
 use App\Server\Http\Controllers\Admin\GetUsersController;
 use App\Server\Http\Controllers\Admin\ListSitesController;
+use App\Server\Http\Controllers\Admin\ListTcpConnectionsController;
 use App\Server\Http\Controllers\Admin\ListUsersController;
 use App\Server\Http\Controllers\Admin\RedirectToUsersController;
 use App\Server\Http\Controllers\Admin\ShowSettingsController;
 use App\Server\Http\Controllers\Admin\StoreSettingsController;
+use App\Server\Http\Controllers\Admin\StoreSubdomainController;
 use App\Server\Http\Controllers\Admin\StoreUsersController;
 use App\Server\Http\Controllers\ControlMessageController;
 use App\Server\Http\Controllers\TunnelMessageController;
@@ -120,15 +126,20 @@ class Factory
         $this->router->get('/users', ListUsersController::class, $adminCondition);
         $this->router->get('/settings', ShowSettingsController::class, $adminCondition);
         $this->router->get('/sites', ListSitesController::class, $adminCondition);
+        $this->router->get('/tcp', ListTcpConnectionsController::class, $adminCondition);
 
         $this->router->get('/api/settings', GetSettingsController::class, $adminCondition);
         $this->router->post('/api/settings', StoreSettingsController::class, $adminCondition);
         $this->router->get('/api/users', GetUsersController::class, $adminCondition);
         $this->router->post('/api/users', StoreUsersController::class, $adminCondition);
         $this->router->get('/api/users/{id}', GetUserDetailsController::class, $adminCondition);
+        $this->router->post('/api/subdomains', StoreSubdomainController::class, $adminCondition);
+        $this->router->delete('/api/subdomains/{subdomain}', DeleteSubdomainController::class, $adminCondition);
         $this->router->delete('/api/users/{id}', DeleteUsersController::class, $adminCondition);
         $this->router->get('/api/sites', GetSitesController::class, $adminCondition);
         $this->router->delete('/api/sites/{id}', DisconnectSiteController::class, $adminCondition);
+        $this->router->get('/api/tcp', GetTcpConnectionsController::class, $adminCondition);
+        $this->router->delete('/api/tcp/{id}', DisconnectTcpConnectionController::class, $adminCondition);
     }
 
     protected function bindConfiguration()
@@ -165,6 +176,7 @@ class Factory
         $this->bindConfiguration()
             ->bindSubdomainGenerator()
             ->bindUserRepository()
+            ->bindSubdomainRepository()
             ->bindDatabase()
             ->ensureDatabaseIsInitialized()
             ->bindConnectionManager()
@@ -201,6 +213,15 @@ class Factory
         return $this;
     }
 
+    protected function bindSubdomainRepository()
+    {
+        app()->singleton(SubdomainRepository::class, function () {
+            return app(config('expose.admin.subdomain_repository'));
+        });
+
+        return $this;
+    }
+
     protected function bindDatabase()
     {
         app()->singleton(DatabaseInterface::class, function () {

app/Server/Http/Controllers/Admin/DeleteSubdomainController.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Server\Http\Controllers\Admin;
+
+use App\Contracts\SubdomainRepository;
+use App\Contracts\UserRepository;
+use Illuminate\Http\Request;
+use Ratchet\ConnectionInterface;
+
+class DeleteSubdomainController extends AdminController
+{
+    protected $keepConnectionOpen = true;
+
+    /** @var SubdomainRepository */
+    protected $subdomainRepository;
+
+    /** @var UserRepository */
+    protected $userRepository;
+
+    public function __construct(UserRepository $userRepository, SubdomainRepository $subdomainRepository)
+    {
+        $this->userRepository = $userRepository;
+        $this->subdomainRepository = $subdomainRepository;
+    }
+
+    public function handle(Request $request, ConnectionInterface $httpConnection)
+    {
+        $this->userRepository->getUserByToken($request->get('auth_token', ''))
+            ->then(function ($user) use ($request, $httpConnection) {
+                if (is_null($user)) {
+                    $httpConnection->send(respond_json(['error' => 'The user does not exist'], 404));
+                    $httpConnection->close();
+
+                    return;
+                }
+
+                $this->subdomainRepository->deleteSubdomainForUserId($user['id'], $request->get('subdomain'))
+                    ->then(function ($deleted) use ($httpConnection) {
+                        $httpConnection->send(respond_json(['deleted' => $deleted], 200));
+                        $httpConnection->close();
+                    });
+            });
+    }
+}

app/Server/Http/Controllers/Admin/DisconnectTcpConnectionController.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Server\Http\Controllers\Admin;
+
+use App\Contracts\ConnectionManager;
+use App\Server\Configuration;
+use App\Server\Connections\TcpControlConnection;
+use Illuminate\Http\Request;
+use Ratchet\ConnectionInterface;
+
+class DisconnectTcpConnectionController extends AdminController
+{
+    /** @var ConnectionManager */
+    protected $connectionManager;
+
+    /** @var Configuration */
+    protected $configuration;
+
+    public function __construct(ConnectionManager $connectionManager)
+    {
+        $this->connectionManager = $connectionManager;
+    }
+
+    public function handle(Request $request, ConnectionInterface $httpConnection)
+    {
+        $connection = $this->connectionManager->findControlConnectionForClientId($request->get('id'));
+
+        if (! is_null($connection)) {
+            $connection->close();
+
+            $this->connectionManager->removeControlConnection($connection);
+        }
+
+        $httpConnection->send(respond_json([
+            'tcp_connections' => collect($this->connectionManager->getConnections())
+                ->filter(function ($connection) {
+                    return get_class($connection) === TcpControlConnection::class;
+                })
+                ->values(),
+        ]));
+    }
+}

app/Server/Http/Controllers/Admin/GetSitesController.php

@@ -4,6 +4,7 @@ namespace App\Server\Http\Controllers\Admin;
 
 use App\Contracts\ConnectionManager;
 use App\Server\Configuration;
+use App\Server\Connections\ControlConnection;
 use Illuminate\Http\Request;
 use Ratchet\ConnectionInterface;
 
@@ -23,12 +24,16 @@ class GetSitesController extends AdminController
     {
         $httpConnection->send(
             respond_json([
-                'sites' => collect($this->connectionManager->getConnections())->map(function ($site, $siteId) {
-                    $site = $site->toArray();
-                    $site['id'] = $siteId;
+                'sites' => collect($this->connectionManager->getConnections())
+                    ->filter(function ($connection) {
+                        return get_class($connection) === ControlConnection::class;
+                    })
+                    ->map(function ($site, $siteId) {
+                        $site = $site->toArray();
+                        $site['id'] = $siteId;
 
-                    return $site;
-                })->values(),
+                        return $site;
+                    })->values(),
             ])
         );
     }

app/Server/Http/Controllers/Admin/GetTcpConnectionsController.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Server\Http\Controllers\Admin;
+
+use App\Contracts\ConnectionManager;
+use App\Server\Configuration;
+use App\Server\Connections\TcpControlConnection;
+use Illuminate\Http\Request;
+use Ratchet\ConnectionInterface;
+
+class GetTcpConnectionsController extends AdminController
+{
+    /** @var ConnectionManager */
+    protected $connectionManager;
+    /** @var Configuration */
+    protected $configuration;
+
+    public function __construct(ConnectionManager $connectionManager, Configuration $configuration)
+    {
+        $this->connectionManager = $connectionManager;
+    }
+
+    public function handle(Request $request, ConnectionInterface $httpConnection)
+    {
+        $httpConnection->send(
+            respond_json([
+                'tcp_connections' => collect($this->connectionManager->getConnections())
+                    ->filter(function ($connection) {
+                        return get_class($connection) === TcpControlConnection::class;
+                    })
+                    ->map(function ($site, $siteId) {
+                        $site = $site->toArray();
+                        $site['id'] = $siteId;
+
+                        return $site;
+                    })
+                    ->values(),
+            ])
+        );
+    }
+}

app/Server/Http/Controllers/Admin/GetUserDetailsController.php

@@ -2,6 +2,7 @@
 
 namespace App\Server\Http\Controllers\Admin;
 
+use App\Contracts\SubdomainRepository;
 use App\Contracts\UserRepository;
 use Illuminate\Http\Request;
 use Ratchet\ConnectionInterface;
@@ -13,21 +14,31 @@ class GetUserDetailsController extends AdminController
     /** @var UserRepository */
     protected $userRepository;
 
-    public function __construct(UserRepository $userRepository)
+    /** @var SubdomainRepository */
+    protected $subdomainRepository;
+
+    public function __construct(UserRepository $userRepository, SubdomainRepository $subdomainRepository)
     {
         $this->userRepository = $userRepository;
+        $this->subdomainRepository = $subdomainRepository;
     }
 
     public function handle(Request $request, ConnectionInterface $httpConnection)
     {
         $this->userRepository
             ->getUserById($request->get('id'))
-            ->then(function ($user) use ($httpConnection) {
-                $httpConnection->send(
-                    respond_json(['user' => $user])
-                );
+            ->then(function ($user) use ($httpConnection, $request) {
+                $this->subdomainRepository->getSubdomainsByUserId($request->get('id'))
+                    ->then(function ($subdomains) use ($httpConnection, $user) {
+                        $httpConnection->send(
+                            respond_json([
+                                'user' => $user,
+                                'subdomains' => $subdomains,
+                            ])
+                        );
 
-                $httpConnection->close();
+                        $httpConnection->close();
+                    });
             });
     }
 }

app/Server/Http/Controllers/Admin/ListSitesController.php

@@ -4,6 +4,7 @@ namespace App\Server\Http\Controllers\Admin;
 
 use App\Contracts\ConnectionManager;
 use App\Server\Configuration;
+use App\Server\Connections\ControlConnection;
 use Illuminate\Http\Request;
 use Ratchet\ConnectionInterface;
 
@@ -25,12 +26,17 @@ class ListSitesController extends AdminController
         $sites = $this->getView($httpConnection, 'server.sites.index', [
             'scheme' => $this->configuration->port() === 443 ? 'https' : 'http',
             'configuration' => $this->configuration,
-            'sites' => collect($this->connectionManager->getConnections())->map(function ($site, $siteId) {
-                $site = $site->toArray();
-                $site['id'] = $siteId;
+            'sites' => collect($this->connectionManager->getConnections())
+                ->filter(function ($connection) {
+                    return get_class($connection) === ControlConnection::class;
+                })
+                ->map(function ($site, $siteId) {
+                    $site = $site->toArray();
+                    $site['id'] = $siteId;
 
-                return $site;
-            })->values(),
+                    return $site;
+                })
+                ->values(),
         ]);
 
         $httpConnection->send(

app/Server/Http/Controllers/Admin/ListTcpConnectionsController.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Server\Http\Controllers\Admin;
+
+use App\Contracts\ConnectionManager;
+use App\Server\Configuration;
+use App\Server\Connections\TcpControlConnection;
+use Illuminate\Http\Request;
+use Ratchet\ConnectionInterface;
+
+class ListTcpConnectionsController extends AdminController
+{
+    /** @var ConnectionManager */
+    protected $connectionManager;
+    /** @var Configuration */
+    protected $configuration;
+
+    public function __construct(ConnectionManager $connectionManager, Configuration $configuration)
+    {
+        $this->connectionManager = $connectionManager;
+        $this->configuration = $configuration;
+    }
+
+    public function handle(Request $request, ConnectionInterface $httpConnection)
+    {
+        $sites = $this->getView($httpConnection, 'server.tcp.index', [
+            'scheme' => $this->configuration->port() === 443 ? 'https' : 'http',
+            'configuration' => $this->configuration,
+            'connections' => collect($this->connectionManager->getConnections())
+                ->filter(function ($connection) {
+                    return get_class($connection) === TcpControlConnection::class;
+                })
+                ->map(function ($connection, $connectionId) {
+                    $connection = $connection->toArray();
+                    $connection['id'] = $connectionId;
+
+                    return $connection;
+                })
+                ->values(),
+        ]);
+
+        $httpConnection->send(
+            respond_html($sites)
+        );
+    }
+}

app/Server/Http/Controllers/Admin/StoreSubdomainController.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace App\Server\Http\Controllers\Admin;
+
+use App\Contracts\SubdomainRepository;
+use App\Contracts\UserRepository;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Validator;
+use Ratchet\ConnectionInterface;
+
+class StoreSubdomainController extends AdminController
+{
+    protected $keepConnectionOpen = true;
+
+    /** @var SubdomainRepository */
+    protected $subdomainRepository;
+
+    /** @var UserRepository */
+    protected $userRepository;
+
+    public function __construct(UserRepository $userRepository, SubdomainRepository $subdomainRepository)
+    {
+        $this->userRepository = $userRepository;
+        $this->subdomainRepository = $subdomainRepository;
+    }
+
+    public function handle(Request $request, ConnectionInterface $httpConnection)
+    {
+        $validator = Validator::make($request->all(), [
+            'subdomain' => 'required',
+        ], [
+            'required' => 'The :attribute field is required.',
+        ]);
+
+        if ($validator->fails()) {
+            $httpConnection->send(respond_json(['errors' => $validator->getMessageBag()], 401));
+            $httpConnection->close();
+
+            return;
+        }
+
+        $this->userRepository->getUserByToken($request->get('auth_token', ''))
+            ->then(function ($user) use ($httpConnection, $request) {
+                if (is_null($user)) {
+                    $httpConnection->send(respond_json(['error' => 'The user does not exist'], 404));
+                    $httpConnection->close();
+
+                    return;
+                }
+
+                if ($user['can_specify_subdomains'] === 0) {
+                    $httpConnection->send(respond_json(['error' => 'The user is not allowed to reserve subdomains.'], 401));
+                    $httpConnection->close();
+
+                    return;
+                }
+
+                $insertData = [
+                    'user_id' => $user['id'],
+                    'subdomain' => $request->get('subdomain'),
+                ];
+
+                $this->subdomainRepository
+                    ->storeSubdomain($insertData)
+                    ->then(function ($subdomain) use ($httpConnection) {
+                        if (is_null($subdomain)) {
+                            $httpConnection->send(respond_json(['error' => 'The subdomain is already taken.'], 422));
+                            $httpConnection->close();
+
+                            return;
+                        }
+                        $httpConnection->send(respond_json(['subdomain' => $subdomain], 200));
+                        $httpConnection->close();
+                    });
+            });
+    }
+}

app/Server/Http/Controllers/Admin/StoreUsersController.php

@@ -40,6 +40,7 @@ class StoreUsersController extends AdminController
             'name' => $request->get('name'),
             'auth_token' => (string) Str::uuid(),
             'can_specify_subdomains' => (int) $request->get('can_specify_subdomains'),
+            'can_share_tcp_ports' => (int) $request->get('can_share_tcp_ports'),
         ];
 
         $this->userRepository

app/Server/Http/Controllers/ControlMessageController.php

@@ -3,8 +3,10 @@
 namespace App\Server\Http\Controllers;
 
 use App\Contracts\ConnectionManager;
+use App\Contracts\SubdomainRepository;
 use App\Contracts\UserRepository;
 use App\Http\QueryParameters;
+use App\Server\Exceptions\NoFreePortAvailable;
 use Ratchet\ConnectionInterface;
 use Ratchet\WebSocket\MessageComponentInterface;
 use React\Promise\Deferred;
@@ -19,10 +21,14 @@ class ControlMessageController implements MessageComponentInterface
     /** @var UserRepository */
     protected $userRepository;
 
-    public function __construct(ConnectionManager $connectionManager, UserRepository $userRepository)
+    /** @var SubdomainRepository */
+    protected $subdomainRepository;
+
+    public function __construct(ConnectionManager $connectionManager, UserRepository $userRepository, SubdomainRepository $subdomainRepository)
     {
         $this->connectionManager = $connectionManager;
         $this->userRepository = $userRepository;
+        $this->subdomainRepository = $subdomainRepository;
     }
 
     /**
@@ -53,6 +59,10 @@ class ControlMessageController implements MessageComponentInterface
         if (isset($connection->request_id)) {
             return $this->sendResponseToHttpConnection($connection->request_id, $msg);
         }
+        if (isset($connection->tcp_request_id)) {
+            $connectionInfo = $this->connectionManager->findControlConnectionForClientId($connection->tcp_client_id);
+            $connectionInfo->proxyConnection->write($msg);
+        }
 
         try {
             $payload = json_decode($msg);
@@ -77,22 +87,11 @@ class ControlMessageController implements MessageComponentInterface
     {
         $this->verifyAuthToken($connection)
             ->then(function ($user) use ($connection, $data) {
-                if (! $this->hasValidSubdomain($connection, $data->subdomain, $user)) {
-                    return;
+                if ($data->type === 'http') {
+                    $this->handleHttpConnection($connection, $data, $user);
+                } elseif ($data->type === 'tcp') {
+                    $this->handleTcpConnection($connection, $data, $user);
                 }
-
-                $connectionInfo = $this->connectionManager->storeConnection($data->host, $data->subdomain, $connection);
-
-                $this->connectionManager->limitConnectionLength($connectionInfo, config('expose.admin.maximum_connection_length'));
-
-                $connection->send(json_encode([
-                    'event' => 'authenticated',
-                    'data' => [
-                        'message' => config('expose.admin.messages.message_of_the_day'),
-                        'subdomain' => $connectionInfo->subdomain,
-                        'client_id' => $connectionInfo->client_id,
-                    ],
-                ]));
             }, function () use ($connection) {
                 $connection->send(json_encode([
                     'event' => 'authenticationFailed',
@@ -104,6 +103,61 @@ class ControlMessageController implements MessageComponentInterface
             });
     }
 
+    protected function handleHttpConnection(ConnectionInterface $connection, $data, $user = null)
+    {
+        $this->hasValidSubdomain($connection, $data->subdomain, $user)->then(function ($subdomain) use ($data, $connection) {
+            if ($subdomain === false) {
+                return;
+            }
+
+            $data->subdomain = $subdomain;
+
+            $connectionInfo = $this->connectionManager->storeConnection($data->host, $data->subdomain, $connection);
+
+            $this->connectionManager->limitConnectionLength($connectionInfo, config('expose.admin.maximum_connection_length'));
+
+            $connection->send(json_encode([
+                'event' => 'authenticated',
+                'data' => [
+                    'message' => config('expose.admin.messages.message_of_the_day'),
+                    'subdomain' => $connectionInfo->subdomain,
+                    'client_id' => $connectionInfo->client_id,
+                ],
+            ]));
+        });
+    }
+
+    protected function handleTcpConnection(ConnectionInterface $connection, $data, $user = null)
+    {
+        if (! $this->canShareTcpPorts($connection, $data, $user)) {
+            return;
+        }
+
+        try {
+            $connectionInfo = $this->connectionManager->storeTcpConnection($data->port, $connection);
+        } catch (NoFreePortAvailable $exception) {
+            $connection->send(json_encode([
+                'event' => 'authenticationFailed',
+                'data' => [
+                    'message' => config('expose.admin.messages.no_free_tcp_port_available'),
+                ],
+            ]));
+            $connection->close();
+
+            return;
+        }
+
+        $connection->send(json_encode([
+            'event' => 'authenticated',
+            'data' => [
+                'message' => config('expose.admin.messages.message_of_the_day'),
+                'port' => $connectionInfo->port,
+                'shared_port' => $connectionInfo->shared_port,
+                'client_id' => $connectionInfo->client_id,
+            ],
+        ]));
+    }
+
     protected function registerProxy(ConnectionInterface $connection, $data)
     {
         $connection->request_id = $data->request_id;
@@ -115,6 +169,18 @@ class ControlMessageController implements MessageComponentInterface
         ]);
     }
 
+    protected function registerTcpProxy(ConnectionInterface $connection, $data)
+    {
+        $connection->tcp_client_id = $data->client_id;
+        $connection->tcp_request_id = $data->tcp_request_id;
+
+        $connectionInfo = $this->connectionManager->findControlConnectionForClientId($data->client_id);
+
+        $connectionInfo->emit('tcp_proxy_ready_'.$data->tcp_request_id, [
+            $connection,
+        ]);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -146,11 +212,72 @@ class ControlMessageController implements MessageComponentInterface
         return $deferred->promise();
     }
 
-    protected function hasValidSubdomain(ConnectionInterface $connection, ?string $subdomain, ?array $user): bool
+    protected function hasValidSubdomain(ConnectionInterface $connection, ?string $subdomain, ?array $user): PromiseInterface
     {
+        /**
+         * Check if the user can specify a custom subdomain in the first place.
+         */
         if (! is_null($user) && $user['can_specify_subdomains'] === 0 && ! is_null($subdomain)) {
             $connection->send(json_encode([
-                'event' => 'subdomainTaken',
+                'event' => 'info',
+                'data' => [
+                    'message' => config('expose.admin.messages.custom_subdomain_unauthorized').PHP_EOL,
+                ],
+            ]));
+
+            return \React\Promise\resolve(null);
+        }
+
+        /**
+         * Check if the given subdomain is reserved for a different user.
+         */
+        if (! is_null($subdomain)) {
+            return $this->subdomainRepository->getSubdomainByName($subdomain)
+                ->then(function ($foundSubdomain) use ($connection, $subdomain, $user) {
+                    if (! is_null($foundSubdomain) && ! is_null($user) && $foundSubdomain['user_id'] !== $user['id']) {
+                        $message = config('expose.admin.messages.subdomain_reserved');
+                        $message = str_replace(':subdomain', $subdomain, $message);
+
+                        $connection->send(json_encode([
+                            'event' => 'subdomainTaken',
+                            'data' => [
+                                'message' => $message,
+                            ],
+                        ]));
+                        $connection->close();
+
+                        return \React\Promise\resolve(false);
+                    }
+
+                    $controlConnection = $this->connectionManager->findControlConnectionForSubdomain($subdomain);
+
+                    if (! is_null($controlConnection) || $subdomain === config('expose.admin.subdomain')) {
+                        $message = config('expose.admin.messages.subdomain_taken');
+                        $message = str_replace(':subdomain', $subdomain, $message);
+
+                        $connection->send(json_encode([
+                            'event' => 'subdomainTaken',
+                            'data' => [
+                                'message' => $message,
+                            ],
+                        ]));
+                        $connection->close();
+
+                        return \React\Promise\resolve(false);
+                    }
+
+                    return \React\Promise\resolve($subdomain);
+                });
+        }
+
+        return \React\Promise\resolve($subdomain);
+    }
+
+    protected function canShareTcpPorts(ConnectionInterface $connection, $data, $user)
+    {
+        if (! is_null($user) && $user['can_share_tcp_ports'] === 0) {
+            $connection->send(json_encode([
+                'event' => 'authenticationFailed',
                 'data' => [
                     'message' => config('expose.admin.messages.custom_subdomain_unauthorized'),
                 ],
@@ -160,24 +287,6 @@ class ControlMessageController implements MessageComponentInterface
             return false;
         }
 
-        if (! is_null($subdomain)) {
-            $controlConnection = $this->connectionManager->findControlConnectionForSubdomain($subdomain);
-            if (! is_null($controlConnection) || $subdomain === config('expose.admin.subdomain')) {
-                $message = config('expose.admin.messages.subdomain_taken');
-                $message = str_replace(':subdomain', $subdomain, $message);
-
-                $connection->send(json_encode([
-                    'event' => 'subdomainTaken',
-                    'data' => [
-                        'message' => $message,
-                    ],
-                ]));
-                $connection->close();
-
-                return false;
-            }
-        }
-
         return true;
     }
 }

app/Server/Http/Controllers/TunnelMessageController.php

@@ -75,7 +75,7 @@ class TunnelMessageController extends Controller
 
         $httpConnection = $this->connectionManager->storeHttpConnection($httpConnection, $requestId);
 
-        transform($this->passRequestThroughModifiers($request, $httpConnection), function (Request $request) use ($controlConnection , $requestId) {
+        transform($this->passRequestThroughModifiers($request, $httpConnection), function (Request $request) use ($controlConnection, $requestId) {
             $controlConnection->once('proxy_ready_'.$requestId, function (ConnectionInterface $proxy) use ($request) {
                 // Convert the Laravel request into a PSR7 request
                 $psr17Factory = new Psr17Factory();
@@ -113,9 +113,13 @@ class TunnelMessageController extends Controller
             $host .= ":{$this->configuration->port()}";
         }
 
-        $request->headers->set('Host', $controlConnection->host);
+        $exposeUrl = parse_url($controlConnection->host);
+
+        $request->headers->set('Host', "{$controlConnection->subdomain}.{$host}");
         $request->headers->set('X-Forwarded-Proto', $request->isSecure() ? 'https' : 'http');
-        $request->headers->set('X-Expose-Request-ID', uniqid());
+        $request->headers->set('X-Expose-Request-ID', sha1(uniqid('', true)));
+        $request->headers->set('X-Expose-Host', sprintf('%s:%s', $exposeUrl['host'], $exposeUrl['port']));
+        $request->headers->set('X-Expose-Proto', $exposeUrl['scheme']);
         $request->headers->set('Upgrade-Insecure-Requests', 1);
         $request->headers->set('X-Exposed-By', config('app.name').' '.config('app.version'));
         $request->headers->set('X-Original-Host', "{$controlConnection->subdomain}.{$host}");

app/Server/SubdomainRepository/DatabaseSubdomainRepository.php

@@ -0,0 +1,132 @@
+<?php
+
+namespace App\Server\SubdomainRepository;
+
+use App\Contracts\SubdomainRepository;
+use Clue\React\SQLite\DatabaseInterface;
+use Clue\React\SQLite\Result;
+use React\Promise\Deferred;
+use React\Promise\PromiseInterface;
+
+class DatabaseSubdomainRepository implements SubdomainRepository
+{
+    /** @var DatabaseInterface */
+    protected $database;
+
+    public function __construct(DatabaseInterface $database)
+    {
+        $this->database = $database;
+    }
+
+    public function getSubdomains(): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database
+            ->query('SELECT * FROM subdomains ORDER by created_at DESC')
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve($result->rows);
+            });
+
+        return $deferred->promise();
+    }
+
+    public function getSubdomainById($id): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database
+            ->query('SELECT * FROM subdomains WHERE id = :id', ['id' => $id])
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve($result->rows[0] ?? null);
+            });
+
+        return $deferred->promise();
+    }
+
+    public function getSubdomainByName(string $name): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database
+            ->query('SELECT * FROM subdomains WHERE subdomain = :name', ['name' => $name])
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve($result->rows[0] ?? null);
+            });
+
+        return $deferred->promise();
+    }
+
+    public function getSubdomainsByUserId($id): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database
+            ->query('SELECT * FROM subdomains WHERE user_id = :user_id ORDER by created_at DESC', [
+                'user_id' => $id,
+            ])
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve($result->rows);
+            });
+
+        return $deferred->promise();
+    }
+
+    public function storeSubdomain(array $data): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->getSubdomainByName($data['subdomain'])
+            ->then(function ($registeredSubdomain) use ($data, $deferred) {
+                if (! is_null($registeredSubdomain)) {
+                    $deferred->resolve(null);
+
+                    return;
+                }
+
+                $this->database->query("
+                    INSERT INTO subdomains (user_id, subdomain, created_at)
+                    VALUES (:user_id, :subdomain, DATETIME('now'))
+                ", $data)
+                    ->then(function (Result $result) use ($deferred) {
+                        $this->database->query('SELECT * FROM subdomains WHERE id = :id', ['id' => $result->insertId])
+                            ->then(function (Result $result) use ($deferred) {
+                                $deferred->resolve($result->rows[0]);
+                            });
+                    });
+            });
+
+        return $deferred->promise();
+    }
+
+    public function getSubdomainsByUserIdAndName($id, $name): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database
+            ->query('SELECT * FROM subdomains WHERE user_id = :user_id AND subdomain = :name ORDER by created_at DESC', [
+                'user_id' => $id,
+                'name' => $name,
+            ])
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve($result->rows);
+            });
+
+        return $deferred->promise();
+    }
+
+    public function deleteSubdomainForUserId($userId, $subdomainId): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database->query('DELETE FROM subdomains WHERE id = :id AND user_id = :user_id', [
+            'id' => $subdomainId,
+            'user_id' => $userId,
+        ])
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve($result);
+            });
+
+        return $deferred->promise();
+    }
+}

app/Server/UserRepository/DatabaseUserRepository.php

@@ -72,6 +72,7 @@ class DatabaseUserRepository implements UserRepository
     protected function getUserDetails(array $user)
     {
         $user['sites'] = $user['auth_token'] !== '' ? $this->connectionManager->getConnectionsForAuthToken($user['auth_token']) : [];
+        $user['tcp_connections'] = $user['auth_token'] !== '' ? $this->connectionManager->getTcpConnectionsForAuthToken($user['auth_token']) : [];
 
         return $user;
     }
@@ -113,8 +114,8 @@ class DatabaseUserRepository implements UserRepository
         $deferred = new Deferred();
 
         $this->database->query("
-            INSERT INTO users (name, auth_token, can_specify_subdomains, created_at)
-            VALUES (:name, :auth_token, :can_specify_subdomains, DATETIME('now'))
+            INSERT INTO users (name, auth_token, can_specify_subdomains, can_share_tcp_ports, created_at)
+            VALUES (:name, :auth_token, :can_specify_subdomains, :can_share_tcp_ports, DATETIME('now'))
         ", $data)
             ->then(function (Result $result) use ($deferred) {
                 $this->database->query('SELECT * FROM users WHERE id = :id', ['id' => $result->insertId])

composer.json

@@ -38,7 +38,7 @@
         "phpunit/phpunit": "^8.5",
         "ratchet/pawl": "^0.3.4",
         "react/http": "^0.8.6",
-        "react/socket": "dev-master as 1.1",
+        "react/socket": "^1.6",
         "react/stream": "^1.1.1",
         "riverline/multipart-parser": "^2.0",
         "symfony/expression-language": "^5.0",

config/expose.php

@@ -151,6 +151,24 @@ return [
         */
         'validate_auth_tokens' => false,
 
+        /*
+        |--------------------------------------------------------------------------
+        | TCP Port Range
+        |--------------------------------------------------------------------------
+        |
+        | Expose allows you to also share TCP ports, for example when sharing your
+        | local SSH server with the public. This setting allows you to define the
+        | port range that Expose will use to assign new ports to the users.
+        |
+        | Note: Do not use port ranges below 1024, as it might require root
+        | privileges to assign these ports.
+        |
+        */
+        'tcp_port_range' => [
+            'from' => 50000,
+            'to' => 60000,
+        ],
+
         /*
         |--------------------------------------------------------------------------
         | Maximum connection length
@@ -214,6 +232,8 @@ return [
         */
         'user_repository' => \App\Server\UserRepository\DatabaseUserRepository::class,
 
+        'subdomain_repository' => \App\Server\SubdomainRepository\DatabaseSubdomainRepository::class,
+
         /*
         |--------------------------------------------------------------------------
         | Messages
@@ -231,7 +251,9 @@ return [
 
             'subdomain_taken' => 'The chosen subdomain :subdomain is already taken. Please choose a different subdomain.',
 
-            'custom_subdomain_unauthorized' => 'You are not allowed to specify custom subdomains. Please upgrade to Expose Pro.',
+            'custom_subdomain_unauthorized' => 'You are not allowed to specify custom subdomains. Please upgrade to Expose Pro. Assigning a random subdomain instead.',
+
+            'no_free_tcp_port_available' => 'There are no free TCP ports available on this server. Please try again later.',
         ],
     ],
 ];

database/migrations/03_add_tcp_sharing_flag_to_users_table.sql

@@ -0,0 +1 @@
+ALTER TABLE users ADD can_share_tcp_ports BOOLEAN DEFAULT 1;

database/migrations/04_create_subdomains_table.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS subdomains (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id INTEGER NOT NULL,
+    subdomain STRING NOT NULL,
+    created_at DATETIME,
+    updated_at DATETIME
+)

docs/client/configuration.md

@@ -17,6 +17,12 @@ The configuration file will be written to your home directory inside a `.expose`
 
 `~/.expose/config.php`
 
+You can also provide a custom location of the config file by providing the full path as a server variable.
+
+```bash
+EXPOSE_CONFIG_FILE="~/my-custom-config.php" expose share
+```
+
 And the default content of the configuration file is this:
 
 ```php

resources/views/server/layouts/app.twig

@@ -27,6 +27,12 @@
                            ml-8 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium leading-5 focus:outline-none transition duration-150 ease-in-out">
                             Shared sites
                         </a>
+                        <a href="/tcp"
+                           class="
+                           {% if request.is('tcp') %} border-indigo-500 focus:border-indigo-700 text-gray-900 {% else %} border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300 focus:text-gray-700 focus:border-gray-300{% endif %}
+                           ml-8 inline-flex items-center px-1 pt-1 border-b-2 text-sm font-medium leading-5 focus:outline-none transition duration-150 ease-in-out">
+                            TCP connections
+                        </a>
                         <a href="/settings"
                            class="
                            {% if request.is('settings') %} border-indigo-500 focus:border-indigo-700 text-gray-900 {% else %} border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300 focus:text-gray-700 focus:border-gray-300{% endif %}

resources/views/server/tcp/index.twig

@@ -0,0 +1,73 @@
+{% extends "app" %}
+{% block title %}TCP Connections{% endblock %}
+{% block content %}
+    <div class="flex flex-col py-8">
+        <div class="-my-2 py-2 overflow-x-auto sm:-mx-6 sm:px-6 lg:-mx-8 lg:px-8">
+            <div
+                class="align-middle inline-block min-w-full shadow overflow-hidden sm:rounded-lg border-b border-gray-200">
+                <table class="min-w-full" v-if="connections.length > 0">
+                    <thead>
+                    <tr>
+                        <th class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">
+                            Local Port
+                        </th>
+                        <th class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">
+                            Expose Port
+                        </th>
+                        <th class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">
+                            Shared At
+                        </th>
+                        <th class="px-6 py-3 border-b border-gray-200 bg-gray-50"></th>
+                    </tr>
+                    </thead>
+                    <tbody class="bg-white">
+                        <tr v-for="connection in connections">
+                            <td class="px-6 py-4 whitespace-no-wrap border-b border-gray-200 text-sm leading-5 font-medium text-gray-900">
+                                @{ connection.port }
+                            </td>
+                            <td class="px-6 py-4 whitespace-no-wrap border-b border-gray-200 text-sm leading-5 text-gray-500">
+                                @{ connection.shared_port }
+                            </td>
+                            <td class="px-6 py-4 whitespace-no-wrap border-b border-gray-200 text-sm leading-5 text-gray-500">
+                                @{ connection.shared_at }
+                            </td>
+                            <td class="px-6 py-4 whitespace-no-wrap text-right border-b border-gray-200 text-sm leading-5 font-medium">
+                                <a href="#"
+                                   @click.prevent="disconnectConnection(connection.client_id)"
+                                   class="pl-2 text-red-600 hover:text-red-900">Disconnect</a>
+                            </td>
+                        </tr>
+                    </tbody>
+                </table>
+                <div class="flex items-center justify-center text-gray-900 p-4" v-else>
+                    <span class="text-xl">There are no TCP connections shared with this server yet.</span>
+                </div>
+            </div>
+        </div>
+    </div>
+{% endblock %}
+{% block scripts %}
+    <script>
+        new Vue({
+            el: '#app',
+
+            delimiters: ['@{', '}'],
+
+            data: {
+                connections: {{ connections|json_encode|raw }}
+            },
+
+            methods: {
+                disconnectConnection(id) {
+                    fetch('/api/tcp/' + id, {
+                        method: 'DELETE',
+                    }).then((response) => {
+                        return response.json();
+                    }).then((data) => {
+                        this.connections = data.connections;
+                    });
+                }
+            }
+        })
+    </script>
+{% endblock %}

resources/views/server/users/index.twig

@@ -43,6 +43,25 @@
                             </div>
                         </div>
                     </div>
+                    <div class="sm:grid sm:grid-cols-3 sm:gap-4 sm:items-start sm:pt-5">
+                        <label for="can_share_tcp_ports"
+                               class="block text-sm font-medium leading-5 text-gray-700 sm:mt-px sm:pt-2">
+                            Can share TCP ports
+                        </label>
+                        <div class="mt-1 sm:mt-0 sm:col-span-2">
+                            <div class="mt-2 flex items-center justify-between">
+                                <div class="flex items-center">
+                                    <input id="can_share_tcp_ports"
+                                           v-model="userForm.can_share_tcp_ports"
+                                           name="can_share_tcp_ports"
+                                           value="1" type="checkbox" class="form-checkbox h-4 w-4 text-indigo-600 transition duration-150 ease-in-out" />
+                                    <label for="can_share_tcp_ports" class="ml-2 block text-sm leading-5 text-gray-900">
+                                        Yes
+                                    </label>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
                 </div>
                 <div class="mt-8 border-t border-gray-200 pt-5">
                     <div class="flex justify-end">
@@ -73,6 +92,9 @@
                     <th class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">
                         Custom Subdomains
                     </th>
+                    <th class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">
+                        TCP ports
+                    </th>
                     <th class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs leading-4 font-medium text-gray-500 uppercase tracking-wider">
                         Created At
                     </th>
@@ -95,6 +117,14 @@
                             Yes
                         </span>
                     </td>
+                    <td class="px-6 py-4 whitespace-no-wrap border-b border-gray-200 text-sm leading-5 text-gray-500">
+                        <span v-if="user.can_share_tcp_ports === 0">
+                            No
+                        </span>
+                        <span v-else>
+                            Yes
+                        </span>
+                    </td>
                     <td class="px-6 py-4 whitespace-no-wrap border-b border-gray-200 text-sm leading-5 text-gray-500">
                         @{ user.created_at }
                     </td>
@@ -144,6 +174,7 @@
                     userForm: {
                         name: '',
                         can_specify_subdomains: true,
+                        can_share_tcp_ports: true,
                         errors: {},
                     },
                     paginated: {{ paginated|json_encode|raw }}
@@ -186,7 +217,8 @@
                         }).then((data) => {
                             if (data.user) {
                                 this.userForm.name = '';
-                                this.userForm.can_specify_subdomains = 0;
+                                this.userForm.can_specify_subdomains = true;
+                                this.userForm.can_share_tcp_ports = true;
                                 this.userForm.errors = {};
                                 this.users.unshift(data.user);
                             }

tests/Feature/Client/DashboardTest.php

@@ -2,6 +2,7 @@
 
 namespace Tests\Feature\Client;
 
+use App\Client\Configuration;
 use App\Client\Factory;
 use App\Client\Http\HttpClient;
 use App\Logger\LoggedRequest;
@@ -129,6 +130,10 @@ class DashboardTest extends TestCase
 
     protected function startDashboard()
     {
+        app()->singleton(Configuration::class, function ($app) {
+            return new Configuration('localhost', '8080', false);
+        });
+
         $this->dashboardFactory = (new Factory())
             ->setLoop($this->loop)
             ->createHttpServer();

tests/Feature/Server/ApiTest.php

@@ -5,6 +5,7 @@ namespace Tests\Feature\Server;
 use App\Contracts\ConnectionManager;
 use App\Server\Factory;
 use Clue\React\Buzz\Browser;
+use Clue\React\Buzz\Message\ResponseException;
 use GuzzleHttp\Psr7\Response;
 use Nyholm\Psr7\Request;
 use Ratchet\Server\IoConnection;
@@ -65,10 +66,10 @@ class ApiTest extends TestCase
     }
 
     /** @test */
-    public function it_can_get_user_details()
+    public function it_does_not_allow_subdomain_reservation_for_users_without_the_right_flag()
     {
         /** @var Response $response */
-        $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
             'Host' => 'expose.localhost',
             'Authorization' => base64_encode('username:secret'),
             'Content-Type' => 'application/json',
@@ -76,6 +77,72 @@ class ApiTest extends TestCase
             'name' => 'Marcel',
         ])));
 
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $this->expectException(ResponseException::class);
+        $this->expectExceptionMessage('HTTP status code 401');
+
+        $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'auth_token' => $user->auth_token,
+            'subdomain' => 'reserved',
+        ])));
+    }
+
+    /** @test */
+    public function it_allows_subdomain_reservation_for_users_with_the_right_flag()
+    {
+        /** @var Response $response */
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'auth_token' => $user->auth_token,
+            'subdomain' => 'reserved',
+        ])));
+
+        $this->assertSame(200, $response->getStatusCode());
+    }
+
+    /** @test */
+    public function it_can_get_user_details()
+    {
+        /** @var Response $response */
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'auth_token' => $user->auth_token,
+            'subdomain' => 'reserved',
+        ])));
+
         /** @var Response $response */
         $response = $this->await($this->browser->get('http://127.0.0.1:8080/api/users/1', [
             'Host' => 'expose.localhost',
@@ -85,9 +152,117 @@ class ApiTest extends TestCase
 
         $body = json_decode($response->getBody()->getContents());
         $user = $body->user;
+        $subdomains = $body->subdomains;
 
         $this->assertSame('Marcel', $user->name);
         $this->assertSame([], $user->sites);
+        $this->assertSame([], $user->tcp_connections);
+
+        $this->assertCount(1, $subdomains);
+    }
+
+    /** @test */
+    public function it_can_delete_subdomains()
+    {
+        /** @var Response $response */
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'subdomain' => 'reserved',
+            'auth_token' => $user->auth_token,
+        ])));
+
+        $this->await($this->browser->delete('http://127.0.0.1:8080/api/subdomains/1', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'auth_token' => $user->auth_token,
+        ])));
+
+        /** @var Response $response */
+        $response = $this->await($this->browser->get('http://127.0.0.1:8080/api/users/1', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ]));
+
+        $body = json_decode($response->getBody()->getContents());
+        $subdomains = $body->subdomains;
+
+        $this->assertCount(0, $subdomains);
+    }
+
+    /** @test */
+    public function it_can_not_reserve_an_already_reserved_subdomain()
+    {
+        /** @var Response $response */
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'subdomain' => 'reserved',
+            'auth_token' => $user->auth_token,
+        ])));
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Sebastian',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $this->expectException(ResponseException::class);
+        $this->expectExceptionMessage('HTTP status code 422');
+
+        $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'subdomain' => 'reserved',
+            'auth_token' => $user->auth_token,
+        ])));
+
+        $response = $this->await($this->browser->get('http://127.0.0.1:8080/api/users/2', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ]));
+
+        $body = json_decode($response->getBody()->getContents());
+        $subdomains = $body->subdomains;
+
+        $this->assertCount(0, $subdomains);
     }
 
     /** @test */
@@ -115,6 +290,10 @@ class ApiTest extends TestCase
         $connection->httpRequest = new Request('GET', '/?authToken=some-other-token');
         $connectionManager->storeConnection('some-different-host.test', 'different-subdomain', $connection);
 
+        $connection = \Mockery::mock(IoConnection::class);
+        $connection->httpRequest = new Request('GET', '/?authToken='.$createdUser->auth_token);
+        $connectionManager->storeTcpConnection(2525, $connection);
+
         /** @var Response $response */
         $response = $this->await($this->browser->get('http://127.0.0.1:8080/api/users', [
             'Host' => 'expose.localhost',
@@ -126,6 +305,7 @@ class ApiTest extends TestCase
         $users = $body->paginated->users;
 
         $this->assertCount(1, $users[0]->sites);
+        $this->assertCount(1, $users[0]->tcp_connections);
         $this->assertSame('some-host.test', $users[0]->sites[0]->host);
         $this->assertSame('fixed-subdomain', $users[0]->sites[0]->subdomain);
     }

tests/Feature/Server/TunnelTest.php

@@ -9,6 +9,7 @@ use Clue\React\Buzz\Message\ResponseException;
 use GuzzleHttp\Psr7\Response;
 use Psr\Http\Message\ServerRequestInterface;
 use React\Http\Server;
+use React\Socket\Connection;
 use Tests\Feature\TestCase;
 
 class TunnelTest extends TestCase
@@ -22,6 +23,9 @@ class TunnelTest extends TestCase
     /** @var \React\Socket\Server */
     protected $testHttpServer;
 
+    /** @var \React\Socket\Server */
+    protected $testTcpServer;
+
     public function setUp(): void
     {
         parent::setUp();
@@ -42,6 +46,10 @@ class TunnelTest extends TestCase
             $this->testHttpServer->close();
         }
 
+        if (isset($this->testTcpServer)) {
+            $this->testTcpServer->close();
+        }
+
         parent::tearDown();
     }
 
@@ -81,6 +89,93 @@ class TunnelTest extends TestCase
         $this->assertSame('Hello World!', $response->getBody()->getContents());
     }
 
+    /** @test */
+    public function it_sends_incoming_requests_to_the_connected_client_via_tcp()
+    {
+        $this->createTestTcpServer();
+
+        $this->app['config']['expose.admin.validate_auth_tokens'] = false;
+
+        /**
+         * We create an expose client that connects to our server and shares
+         * the created test HTTP server.
+         */
+        $client = $this->createClient();
+        $response = $this->await($client->connectToServerAndShareTcp(8085));
+
+        /**
+         * Once the client is connected, we connect to the
+         * created tunnel.
+         */
+        $connector = new \React\Socket\Connector($this->loop);
+        $connection = $this->await($connector->connect('127.0.0.1:'.$response->shared_port));
+
+        $this->assertInstanceOf(Connection::class, $connection);
+    }
+
+    /** @test */
+    public function it_rejects_tcp_sharing_if_forbidden()
+    {
+        $this->createTestTcpServer();
+
+        $this->app['config']['expose.admin.validate_auth_tokens'] = true;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_share_tcp_ports' => 0,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $this->expectException(\UnexpectedValueException::class);
+
+        /**
+         * We create an expose client that connects to our server and shares
+         * the created test HTTP server.
+         */
+        $client = $this->createClient();
+        $this->await($client->connectToServerAndShareTcp(8085, $user->auth_token));
+    }
+
+    /** @test */
+    public function it_allows_tcp_sharing_if_enabled_for_user()
+    {
+        $this->createTestTcpServer();
+
+        $this->app['config']['expose.admin.validate_auth_tokens'] = true;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_share_tcp_ports' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        /**
+         * We create an expose client that connects to our server and shares
+         * the created test HTTP server.
+         */
+        $client = $this->createClient();
+        $response = $this->await($client->connectToServerAndShareTcp(8085, $user->auth_token));
+
+        /**
+         * Once the client is connected, we connect to the
+         * created tunnel.
+         */
+        $connector = new \React\Socket\Connector($this->loop);
+        $connection = $this->await($connector->connect('127.0.0.1:'.$response->shared_port));
+
+        $this->assertInstanceOf(Connection::class, $connection);
+    }
+
     /** @test */
     public function it_rejects_clients_with_invalid_auth_tokens()
     {
@@ -140,8 +235,6 @@ class TunnelTest extends TestCase
             'can_specify_subdomains' => 0,
         ])));
 
-        $this->expectException(\UnexpectedValueException::class);
-
         $user = json_decode($response->getBody()->getContents())->user;
 
         $this->createTestHttpServer();
@@ -153,7 +246,92 @@ class TunnelTest extends TestCase
         $client = $this->createClient();
         $response = $this->await($client->connectToServer('127.0.0.1:8085', 'tunnel', $user->auth_token));
 
-        $this->assertSame('tunnel', $response->subdomain);
+        $this->assertNotSame('tunnel', $response->subdomain);
+    }
+
+    /** @test */
+    public function it_rejects_users_that_want_to_use_a_reserved_subdomain()
+    {
+        $this->app['config']['expose.admin.validate_auth_tokens'] = true;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'subdomain' => 'reserved',
+            'auth_token' => $user->auth_token,
+        ])));
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Test-User',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $this->createTestHttpServer();
+
+        $this->expectException(\UnexpectedValueException::class);
+        /**
+         * We create an expose client that connects to our server and shares
+         * the created test HTTP server.
+         */
+        $client = $this->createClient();
+        $response = $this->await($client->connectToServer('127.0.0.1:8085', 'reserved', $user->auth_token));
+
+        $this->assertSame('reserved', $response->subdomain);
+    }
+
+    /** @test */
+    public function it_allows_users_to_use_their_own_reserved_subdomains()
+    {
+        $this->app['config']['expose.admin.validate_auth_tokens'] = true;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/users', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'name' => 'Marcel',
+            'can_specify_subdomains' => 1,
+        ])));
+
+        $user = json_decode($response->getBody()->getContents())->user;
+
+        $response = $this->await($this->browser->post('http://127.0.0.1:8080/api/subdomains', [
+            'Host' => 'expose.localhost',
+            'Authorization' => base64_encode('username:secret'),
+            'Content-Type' => 'application/json',
+        ], json_encode([
+            'subdomain' => 'reserved',
+            'auth_token' => $user->auth_token,
+        ])));
+
+        $this->createTestHttpServer();
+        /**
+         * We create an expose client that connects to our server and shares
+         * the created test HTTP server.
+         */
+        $client = $this->createClient();
+        $response = $this->await($client->connectToServer('127.0.0.1:8085', 'reserved', $user->auth_token));
+
+        $this->assertSame('reserved', $response->subdomain);
     }
 
     /** @test */
@@ -221,4 +399,15 @@ class TunnelTest extends TestCase
         $this->testHttpServer = new \React\Socket\Server(8085, $this->loop);
         $server->listen($this->testHttpServer);
     }
+
+    protected function createTestTcpServer()
+    {
+        $this->testTcpServer = new \React\Socket\Server(8085, $this->loop);
+
+        $this->testTcpServer->on('connection', function (\React\Socket\ConnectionInterface $connection) {
+            $connection->write('Hello '.$connection->getRemoteAddress()."!\n");
+
+            $connection->pipe($connection);
+        });
+    }
 }