let system choose port of test server

test/webfuse/tests/adapter/test_client.cc

@@ -112,7 +112,7 @@ TEST(client, general_usage)
 
 TEST(client, connect)
 {
-    ThreadedWsServer server(54321);
+    ThreadedWsServer server;
 
     context ctx;
     ctx.state = connection_state::connecting;
@@ -120,7 +120,7 @@ TEST(client, connect)
     wf_client * client = wf_client_create(
         &callback2, reinterpret_cast<void*>(&ctx));
 
-    wf_client_connect(client, "ws://localhost:54321/");
+    wf_client_connect(client, server.GetUrl().c_str());
     while (ctx.state != connection_state::connected)
     {
         wf_client_service(client);

test/webfuse/utils/threaded_ws_server.cc

@@ -7,6 +7,7 @@
 #include <mutex>
 #include <condition_variable>
 #include <chrono>
+#include <sstream>
 
 
 #define TIMEOUT (std::chrono::milliseconds(10 * 1000))
@@ -35,6 +36,7 @@ public:
     explicit Private(int port);
     ~Private();
     void WaitForConnection();
+    std::string GetUrl() const;
     void OnConnected(lws * wsi) override;
     void OnConnectionClosed(lws * wsi) override;
 
@@ -108,6 +110,12 @@ void ThreadedWsServer::WaitForConnection()
     d->WaitForConnection();
 }
 
+std::string ThreadedWsServer::GetUrl() const
+{
+    return d->GetUrl();
+}
+
+
 ThreadedWsServer::Private::Private(int port)
 : port_(port)
 , is_connected(false)
@@ -130,9 +138,13 @@ ThreadedWsServer::Private::Private(int port)
     info.vhost_name = "localhost";
     info.ws_ping_pong_interval = 10;
     info.options = LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
+    info.options |= LWS_SERVER_OPTION_EXPLICIT_VHOSTS;
 
     ws_context = lws_create_context(&info);
 
+    struct lws_vhost * vhost = lws_create_vhost(ws_context, &info);
+    port_ = lws_get_vhost_port(vhost);
+
     context = std::thread(&run, this);
 }
 
@@ -193,5 +205,12 @@ void ThreadedWsServer::Private::OnConnectionClosed(lws * wsi)
     }
 }
 
+std::string ThreadedWsServer::Private::GetUrl() const
+{
+    std::ostringstream stream;
+    stream << "ws://localhost:" << port_ << "/";
+    return stream.str();
+}
+
 
 }

test/webfuse/utils/threaded_ws_server.h

@@ -3,6 +3,7 @@
 
 #include <libwebsockets.h>
 #include <jansson.h>
+#include <string>
 
 namespace webfuse_test
 {
@@ -12,9 +13,10 @@ class ThreadedWsServer
     ThreadedWsServer(ThreadedWsServer const &) = delete;
     ThreadedWsServer & operator=(ThreadedWsServer const &) = delete;
 public:
-    explicit ThreadedWsServer(int port);
+    explicit ThreadedWsServer(int port = 0);
     ~ThreadedWsServer();
     void WaitForConnection();
+    std::string GetUrl() const;
 private:
     class Private;
     Private * d;