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javascript - Websocket 握手不起作用

转载 作者:行者123 更新时间:2023-11-30 03:31:20 25 4
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我有一个使用 WinSock2 的 cpp 服务器,我试图用我的 javascript 客户端连接到这个服务器,但它不起作用,chrome 控制台显示“WebSocket 握手期间出错:'Sec-WebSocket-Accept' header 值不正确”。我将我的 sha1 和 base64 函数与在线 sha1 和 base64 函数进行了比较,所以问题不在这里。

Chrome 响应 header :

HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
Sec-Websocket-Accept: NzdkYjg1Y2I4MDRlNTk0OGNmNzI1NzdjZDgwOTEwZWZiYWI1NzQ3Yw==

Chrome 请求 header :

GET ws://localhost:8820/ HTTP/1.1
Host: localhost:8820
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
Origin: file://
Sec-WebSocket-Version: 13
User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36
Accept-Encoding: gzip, deflate, sdch, br
Accept-Language: he-IL,he;q=0.8,en-US;q=0.6,en;q=0.4
Sec-WebSocket-Key: Y7a2ZKEz/VCM92Wya49iPA==
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits

服务器代码:

//key is already defined.
key += "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
key = sha1(key);
key = base64_encode(reinterpret_cast<const unsigned char*>(key.c_str()), key.length());

toClient = "HTTP/1.1 101 Switching Protocols\r\n";
toClient += "Upgrade: websocket\r\n";
toClient += "connection: Upgrade\r\n";
toClient += "Sec-Websocket-Accept: ";
toClient += key;
toClient += "\r\n\r\n";

sendData(sc, toClient);

客户端代码:

<!DOCTYPE HTML>

  <script type="text/javascript">
function WebSocketTest()
{
if ("WebSocket" in window)
{
//alert("WebSocket is supported by your Browser!");

// Let us open a web socket
var ws = new WebSocket("ws://localhost:8820");
console.log("test");
ws.onopen = function()
{
alert("Connection.")
// Web Socket is connected, send data using send()
ws.send("20304user04user04user");
//alert("Message is sent...");
};

ws.onmessage = function (evt)
{
var received_msg = evt.data;
alert("Hey");
};

ws.onclose = function()
{
// websocket is closed.
alert("Connection is closed...");
};
}

else
{
// The browser doesn't support WebSocket
alert("WebSocket NOT supported by your Browser!");
}
}
</script>

  <div id="sse">
<a href="javascript:WebSocketTest()">Run WebSocket</a>
</div>

最佳答案

我尝试手动构建响应:

  1. 串联的原始 sha1 摘要字节是 77db85cb804e5948cf72577cd80910efbab5747c
  2. 以 64 为基数的字节:d9uFy4BOWUjPcld82AkQ77q1dHw=

这与您拥有的不同。您正在将这些字节的十六进制字符串表示形式转换为 base 64,而不是将原始字节转换为 base 64。

关于javascript - Websocket 握手不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44261062/

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