我正在尝试在nodejs中编写一个非常简单的websocket服务器,我遇到了一个问题 . 在浏览器上,WebSocket.onclose函数是唯一被触发的函数(onopen,onmessage和onerror都没有) . 我已经在Chrome7和FireFox4中进行了测试 . 这是我的服务器代码:
var http = require('http'),
net = require('net'),
crypto = require('crypto');
var server = http.createServer(function (req, res) {
console.log(req);
});
server.on('connection', function (stream) {
stream.setEncoding('utf8');
stream.setTimeout(0);
stream.setNoDelay(true);
stream.on('data', function (data) {
var sec1_regex = /Sec-WebSocket-Key1:(.*)/g;
var sec2_regex = /Sec-WebSocket-Key2:(.*)/g;
var origin_regex = /Origin: (.*)/g;
var protocol_regex = /Sec-WebSocket-Protocol: (.*)/g;
console.log(stream);
console.log("****Incoming****\r\n" + data);
var key1 = sec1_regex.exec(data)[1];
var num1 = parseInt(key1.match(/\d/g).join(''))/(key1.match(/\s/g).length - 1);
console.log("num1: " + num1);
var key2 = sec2_regex.exec(data)[1];
var num2 = parseInt(key2.match(/\d/g).join(''))/(key2.match(/\s/g).length - 1);
console.log("num2: " + num2);
var lastbytes = data.slice(-8);
var origin = origin_regex.exec(data)[1];
var md5 = crypto.createHash('md5');
md5.update(String.fromCharCode(num1 >> 24 & 0xFF, num1 >> 16 & 0xFF, num1 >> 8 & 0xFF, num1 & 0xFF));
md5.update(String.fromCharCode(num2 >> 24 & 0xFF, num2 >> 16 & 0xFF, num2 >> 8 & 0xFF, num2 & 0xFF));
md5.update(lastbytes);
var response = "HTTP/1.1 101 WebSocket Protocol Handshake\r\nUpgrade: WebSocket\r\nConnection: Upgrade\r\nSec-WebSocket-Origin: "
+ origin + "\r\nSec-WebSocket-Location: ws://127.0.0.1:8124/\r\n" +
md5.digest('binary');
stream.write(response, 'binary');
console.log("****Outgoing****\r\n" + response);
});
});
server.listen(8124, '127.0.0.1');
我的客户代码:
function connect() {
if (window.WebSocket) {
try {
ws = new WebSocket('ws://127.0.0.1:8124');
ws.onopen = function () {
alert("open");
};
ws.onclose = function() {
alert("close");
};
ws.onerror = function(err) {
alert("err!");
};
ws.onmessage = function() {
alert('message');
};
} catch (ex) {
alert(ex);
}
}
}
2 回答
好吧,这里有一些错误,只有
onclose
句柄被触发的原因是因为浏览器没有收到有效的握手,因此终止了连接 .您总是发送
ws://127.0.0.1:8124/
作为位置,该位置应完全匹配浏览器在请求中发送的任何内容,在这种情况下,它很可能是localhost:8124
所以您应该在这种情况下返回ws://localhost:8124/
.你在回复 Headers 之后错过了另一个
\r\n
,所以你实际上并没有发送任何正文 .你的哈希值的计算似乎有问题,我仍然试图弄清楚是什么
对于工作(并且非常小)的实现,请参见此处:
http://github.com/BonsaiDen/NodeGame-Shooter/blob/master/server/ws.js
您可以监听http服务器的升级事件 .
它喜欢: