Fix websocket client example, extend it by a local websocket server

examples/websocket_client/websocket_client.c

@@ -1,4 +1,5 @@
 /*
+* Copyright (c) 2014 the Civetweb developers
 * Copyright (c) 2014 Jordan Shelley
 * https://github.com/jshelley
 * License http://opensource.org/licenses/mit-license.php MIT License
@@ -12,6 +13,7 @@
 #include <unistd.h>
 #endif
 
+#include <assert.h>
 #include <string.h>
 #include "civetweb.h"
 
@@ -19,33 +21,72 @@
 #define PORT "8888"
 #define SSL_CERT "./ssl/server.pem"
 
-static int websocket_data_handler(struct mg_connection *conn, int flags, char *data, size_t data_len)
+
+int websock_server_connect(const struct mg_connection * conn)
 {
-    printf("From server: ");
-    fwrite(data, 1, data_len, stdout);
-    printf("\r\n");
+    printf("Server: Websocket connected\n");
+    return 0; /* return 0 to accept every connection */
+}
 
-    return 1;
+void websocket_server_ready(struct mg_connection * conn)
+{
+    printf("Server: Websocket ready\n");
 }
 
-int main(int argc, char *argv[])
+int websocket_server_data(struct mg_connection * conn, int bits, char *data, size_t data_len)
 {
+    printf("Server: Got %u bytes from the client\n", data_len);
+    return 1; /* return 1 to keep the connetion open */
+}
 
+void websocket_server_connection_close(struct mg_connection * conn)
+{
+    printf("Server: Close connection\n");
+}
+
+struct mg_context * start_websocket_server()
+{
     const char * options[] = { "document_root", DOCUMENT_ROOT,
                                "ssl_certificate", SSL_CERT,
                                "listening_ports", PORT, 0
                              };
     struct mg_callbacks callbacks;
     struct mg_context *ctx;
-    struct mg_connection* newconn;
-    char ebuf[100];
 
     memset(&callbacks, 0, sizeof(callbacks));
+    callbacks.websocket_connect = websock_server_connect;
+    callbacks.websocket_ready = websocket_server_ready;
+    callbacks.websocket_data = websocket_server_data;
+    callbacks.connection_close = websocket_server_connection_close;
     ctx = mg_start(&callbacks, 0, options);
 
-    newconn = mg_websocket_client_connect("echo.websocket.org", 443, 1,
+    return ctx;
+}
+
+
+static int websocket_client_data_handler(struct mg_connection *conn, int flags, char *data, size_t data_len)
+{
+    printf("From server: ");
+    fwrite(data, 1, data_len, stdout);
+    printf("\n");
+
+    return 1;
+}
+
+
+int main(int argc, char *argv[])
+{
+    struct mg_context *ctx;
+    struct mg_connection* newconn;
+    char ebuf[100];
+
+    /* First set up a websocket server */
+    ctx = start_websocket_server();
+    assert(ctx != NULL);
+
+    newconn = mg_websocket_client_connect("localhost", atoi(PORT), 0,
                              ebuf, sizeof(ebuf),
-                             "/", "http://websocket.org",websocket_data_handler);
+                             "/websocket", NULL, websocket_client_data_handler);
 
     if (newconn == NULL)
     {
@@ -55,22 +96,24 @@ int main(int argc, char *argv[])
 
     mg_websocket_write(newconn, WEBSOCKET_OPCODE_TEXT, "data1", 5);
 
-    sleep(5);
+    sleep(1);
 
     mg_websocket_write(newconn, WEBSOCKET_OPCODE_TEXT, "data2", 5);
 
-    sleep(5);
+    sleep(1);
 
     mg_websocket_write(newconn, WEBSOCKET_OPCODE_TEXT, "data3", 5);
 
-    sleep(5);
+    sleep(1);
 
     mg_websocket_write(newconn, WEBSOCKET_OPCODE_TEXT, "data4", 5);
 
-    sleep(5);
+    sleep(1);
 
     mg_close_connection(newconn);
 
+    mg_stop(ctx);
+
     printf("Bye!\n");
 
     return 0;