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added websocket example files

Sergey Lyubka 13 年之前
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共有 2 個文件被更改，包括 93 次插入 和 0 次删除
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  1. 59 0
      examples/websocket.c
  2. 34 0
      examples/websocket_html_root/index.html

+ 59 - 0
examples/websocket.c
查看文件 

@@ -0,0 +1,59 @@
 
+// Copyright (c) 2004-2012 Sergey Lyubka
 
+// This file is a part of mongoose project, http://github.com/valenok/mongoose
 
+
 
+#include <stdio.h>
 
+#include <string.h>
 
+#include "mongoose.h"
 
+
 
+static void *callback(enum mg_event event, struct mg_connection *conn) {
 
+  if (event == MG_WEBSOCKET_READY) {
 
+    static const char *hello = "hello from mongoose! waiting for message ...";
 
+    char frame[2];
 
+
 
+    // Prepare websocket frame.
 
+    frame[0] = 0x81;            // text frame
 
+    frame[1] = strlen(hello);   // length is < 126
 
+
 
+    // Write frame and a text message
 
+    mg_write(conn, frame, sizeof(frame));
 
+    mg_write(conn, hello, strlen(hello));
 
+    return "";
 
+  } else if (event == MG_WEBSOCKET_MESSAGE) {
 
+    unsigned char buf[500], reply[500];
 
+    int len, msg_len, i, mask_len, xor;
 
+
 
+    // Read message from the client and echo it back
 
+    if ((len = mg_read(conn, buf, sizeof(buf))) > 8) {
 
+      msg_len = buf[1] & 127;
 
+      mask_len = (buf[1] & 128) ? 4 : 0;
 
+      if (msg_len < 126) {
 
+        reply[0] = 0x81;  // text, FIN set
 
+        reply[1] = msg_len;
 
+        for (i = 0; i < msg_len; i++) {
 
+          xor = mask_len == 0 ? 0 : buf[2 + (i % 4)];
 
+          reply[i + 2] = buf[i + 2 + mask_len] ^ xor;
 
+        }
 
+        mg_write(conn, reply, 2 + msg_len);
 
+      }
 
+    }
 
+
 
+    return ""; // Return non-NULL: stop websocket conversation
 
+  } else {
 
+    return NULL;
 
+  }
 
+}
 
+
 
+int main(void) {
 
+  struct mg_context *ctx;
 
+  const char *options[] = {
 
+    "listening_ports", "8080",
 
+    "document_root", "websocket_html_root",
 
+    NULL
 
+  };
 
+
 
+  ctx = mg_start(&callback, NULL, options);
 
+  getchar();  // Wait until user hits "enter"
 
+  mg_stop(ctx);
 
+
 
+  return 0;
 
+}

+ 34 - 0
examples/websocket_html_root/index.html
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@@ -0,0 +1,34 @@
 
+<!DOCTYPE html>  
+<meta charset="utf-8" />  
+<title>WebSocket Test</title>  
+<script language="javascript" type="text/javascript">
 
+  var writeToScreen = function(message) {
 
+    var div = document.createElement('div');
 
+    div.innerHTML = message;
 
+    document.getElementById('output').appendChild(div);
 
+  };
 
+  window.onload = function() {
 
+    var url = 'ws://' + window.location.host + '/foo';
 
+    websocket = new WebSocket(url);
 
+    websocket.onopen = function(ev) {
 
+      writeToScreen('CONNECTED');
 
+      var message = 'Не всё подчиняется разуму. Но всё подчиняется упорству. ';
 
+      writeToScreen('SENT: ' + message);
 
+      websocket.send(message);
 
+    };
 
+    websocket.onclose = function(ev) {
 
+      writeToScreen('DISCONNECTED');
 
+    };
 
+    websocket.onmessage = function(ev) {
 
+      writeToScreen('<span style="color: blue;">RESPONSE: ' + ev.data +
 
+                    ' </span>');
 
+      websocket.close();
 
+    };
 
+    websocket.onerror = function(ev) {
 
+      writeToScreen('<span style="color: red; ">ERROR: </span> ' + ev.data);
 
+    };
 
+  };
 
+</script>  
+<h2>WebSocket Test</h2>  
+<div id="output"></div>  
+</html>