Add fast enough WebSocket benchmark

benchmarks/Makefile

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+default:
+	clang -flto -O3 -DLIBUS_NO_SSL -I../uSockets/src ../uSockets/src/*.c ../uSockets/src/eventing/*.c load_test.c -o load_test

benchmarks/load_test.c

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+/* This is a simple yet efficient WebSocket server benchmark much like WRK */
+
+#include <libusockets.h>
+//#include "helper.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+// request eller upgradeRequest samt webSocketFrame
+
+unsigned char web_socket_request[26] = {130, 128 | 20, 1, 2, 3, 4};
+
+char request[] = "GET / HTTP/1.1\r\n"
+                 "Upgrade: websocket\r\n"
+                 "Connection: Upgrade\r\n"
+                 "Sec-WebSocket-Key: x3JJHMbDL1EzLkh9GBhXDw==\r\n"
+                 "Host: server.example.com\r\n"
+                 "Sec-WebSocket-Version: 13\r\n\r\n";
+char *host;
+int port;
+int connections;
+
+int responses;
+
+struct http_socket {
+    /* How far we have streamed our request */
+    int offset;
+};
+
+/* We don't need any of these */
+void on_wakeup(struct us_loop *loop) {
+
+}
+
+void on_pre(struct us_loop *loop) {
+
+}
+
+/* This is not HTTP POST, it is merely an event emitted post loop iteration */
+void on_post(struct us_loop *loop) {
+
+}
+
+struct us_socket *on_http_socket_writable(struct us_socket *s) {
+    struct http_socket *http_socket = (struct http_socket *) us_socket_ext(s);
+
+    /* Stream whatever is remaining of the request */
+    http_socket->offset += us_socket_write(s, web_socket_request + http_socket->offset, sizeof(web_socket_request) - http_socket->offset, 0);
+
+    return s;
+}
+
+struct us_socket *on_http_socket_close(struct us_socket *s) {
+
+    printf("Closed!\n");
+
+    return s;
+}
+
+struct us_socket *on_http_socket_end(struct us_socket *s) {
+    return us_socket_close(s);
+}
+
+struct us_socket *on_http_socket_data(struct us_socket *s, char *data, int length) {
+    /* Get socket extension and the socket's context's extension */
+    struct http_socket *http_socket = (struct http_socket *) us_socket_ext(s);
+    struct http_context *http_context = (struct http_context *) us_socket_context_ext(us_socket_get_context(s));
+
+    /* We treat all data events as a response */
+    http_socket->offset = us_socket_write(s, web_socket_request, sizeof(web_socket_request), 0);
+
+    /* */
+    responses++;
+
+    //printf("Fick ett svar\n");
+
+    return s;
+}
+
+struct us_socket *on_http_socket_open(struct us_socket *s, int is_client) {
+    struct http_socket *http_socket = (struct http_socket *) us_socket_ext(s);
+
+    /* Reset offset */
+    http_socket->offset = 0;
+
+    /* Send a request */
+    us_socket_write(s, request, sizeof(request) - 1, 0);
+
+    if (--connections) {
+        us_socket_context_connect(us_socket_get_context(s), host, port, 0, sizeof(struct http_socket));
+    } else {
+        printf("Running benchmark now...\n");
+
+        us_socket_timeout(s, LIBUS_TIMEOUT_GRANULARITY);
+    }
+
+    return s;
+}
+
+struct us_socket *on_http_socket_timeout(struct us_socket *s) {
+    /* Print current statistics */
+    printf("Req/sec: %f\n", ((float)responses) / LIBUS_TIMEOUT_GRANULARITY);
+
+    responses = 0;
+    us_socket_timeout(s, LIBUS_TIMEOUT_GRANULARITY);
+
+    return s;
+}
+
+int main(int argc, char **argv) {
+
+    /* Parse host and port */
+    if (argc != 4) {
+        printf("Usage: connections host port\n");
+        return 0;
+    }
+
+    port = atoi(argv[3]);
+    host = malloc(strlen(argv[2]) + 1);
+    memcpy(host, argv[2], strlen(argv[2]) + 1);
+    connections = atoi(argv[1]);
+
+    /* Create the event loop */
+    struct us_loop *loop = us_create_loop(1, on_wakeup, on_pre, on_post, 0);
+
+    /* Create a socket context for HTTP */
+#ifndef LIBUS_NO_SSL
+    struct us_ssl_socket_context_options ssl_options = {};
+    struct us_socket_context *http_context = us_create_ssl_socket_context(loop, 0, ssl_options);
+#else
+    struct us_socket_context *http_context = us_create_socket_context(loop, 0);
+#endif
+
+    /* Set up event handlers */
+    us_socket_context_on_open(http_context, on_http_socket_open);
+    us_socket_context_on_data(http_context, on_http_socket_data);
+    us_socket_context_on_writable(http_context, on_http_socket_writable);
+    us_socket_context_on_close(http_context, on_http_socket_close);
+    us_socket_context_on_timeout(http_context, on_http_socket_timeout);
+    us_socket_context_on_end(http_context, on_http_socket_end);
+
+    /* Start making HTTP connections */
+    us_socket_context_connect(http_context, host, port, 0, sizeof(struct http_socket));
+
+    us_loop_run(loop);
+}

src/WebSocket.h

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+#ifndef WEBSOCKET_H
+#define WEBSOCKET_H
+
+#endif // WEBSOCKET_H

src/WebSocketData.h

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+#ifndef WEBSOCKETDATA_H
+#define WEBSOCKETDATA_H
+
+#endif // WEBSOCKETDATA_H