Add more pubsub fuzzing

2021-09-12 14:35:51 +02:00
parent e669c7017c
commit 78d20fd103
5 changed files with 123 additions and 1 deletions
@@ -0,0 +1,98 @@
+/* We rely on wrapped syscalls */
+#include "libEpollFuzzer/epoll_fuzzer.h"
+
+#include "App.h"
+#include <vector>
+
+/* We keep this one for teardown later on */
+struct us_listen_socket_t *listen_socket;
+
+/* This test is run by libEpollFuzzer */
+void test() {
+
+    /* ws->getUserData returns one of these */
+    struct PerSocketData {
+        /* Fill with user data */
+        std::vector<std::string> topics;
+        int nr = 0;
+    };
+
+    /* Keep in mind that uWS::SSLApp({options}) is the same as uWS::App() when compiled without SSL support.
+     * You may swap to using uWS:App() if you don't need SSL */
+    uWS::SSLApp *app = new uWS::SSLApp({
+        /* There are example certificates in uWebSockets.js repo */
+	    .key_file_name = "../misc/key.pem",
+	    .cert_file_name = "../misc/cert.pem",
+	    .passphrase = "1234"
+	});
+    
+    app->ws<PerSocketData>("/*", {
+        /* Settings */
+        .compression = uWS::DISABLED,
+        .maxPayloadLength = 16 * 1024 * 1024,
+        .idleTimeout = 60,
+        .maxBackpressure = 16 * 1024 * 1024,
+        .closeOnBackpressureLimit = false,
+        .resetIdleTimeoutOnSend = true,
+        .sendPingsAutomatically = false,
+        /* Handlers */
+        .upgrade = nullptr,
+        .open = [](auto *ws) {
+            /* Open event here, you may access ws->getUserData() which points to a PerSocketData struct */
+
+            PerSocketData *perSocketData = (PerSocketData *) ws->getUserData();
+
+            for (int i = 0; i < 100; i++) {
+                std::string topic = std::to_string(ws);
+                perSocketData->topics.push_back(topic);
+                ws->subscribe(topic);
+            }
+        },
+        .message = [&app](auto *ws, std::string_view message, uWS::OpCode opCode) {
+            PerSocketData *perSocketData = (PerSocketData *) ws->getUserData();
+
+            app->publish(perSocketData->topics[++nr % 100], message, opCode);
+        },
+        .drain = [](auto */*ws*/) {
+            /* Check ws->getBufferedAmount() here */
+            //std::cout << "drain" << std::endl;
+        },
+        .ping = [](auto */*ws*/, std::string_view ) {
+            /* Not implemented yet */
+        },
+        .pong = [](auto */*ws*/, std::string_view ) {
+            /* Not implemented yet */
+        },
+        .close = [](auto */*ws*/, int /*code*/, std::string_view /*message*/) {
+            /* You may access ws->getUserData() here */
+        }
+    }).listen(9001, [](auto *listen_s) {
+        if (listen_s) {
+            //std::cout << "Listening on port " << 9001 << std::endl;
+            listen_socket = listen_s;
+        }
+    });
+    
+    app->run();
+
+    delete app;
+
+    uWS::Loop::get()->free();
+}
+
+/* Thus function should shutdown the event-loop and let the test fall through */
+void teardown() {
+	/* If we are called twice there's a bug (it potentially could if
+	 * all open sockets cannot be error-closed in one epoll_wait call).
+	 * But we only allow 1k FDs and we have a buffer of 1024 from epoll_wait */
+	if (!listen_socket) {
+		exit(-1);
+	}
+
+	/* We might have open sockets still, and these will be error-closed by epoll_wait */
+	// us_socket_context_close - close all open sockets created with this socket context
+    if (listen_socket) {
+        us_listen_socket_close(0, listen_socket);
+        listen_socket = NULL;
+    }
+}