我使用套接字在C#(客户端 - 服务器)中开发了一个应用程序,用于客户端和服务器之间的通信。现在我想使用javascript(基于development guide about javascript)为android创建相同的应用程序,但要保持服务器用C#(我可以通过通信改变部分但不多)。这是代码的外观:
服务器端:
connection.Send(Encoding.ASCII.GetBytes("HTTP/1.1 101 Switching Protocols\r\nUpgrade: WebSocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: " + aux));
connection.Send(Encoding.ASCII.GetBytes("\r\n\r\n"));
其中aux是:
public static String ComputeWebSocketHandshakeSecurityHash09(String secWebSocketKey)
{
const String MagicKEY = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
String secWebSocketAccept = String.Empty;
// 1. Combine the request Sec-WebSocket-Key with magic key.
String ret = secWebSocketKey + MagicKEY;
Console.WriteLine("- " + ret + " -");
// 2. Compute the SHA1 hash
SHA1 sha = new SHA1CryptoServiceProvider();
byte[] sha1Hash = sha.ComputeHash(Encoding.UTF8.GetBytes(ret));
// 3. Base64 encode the hash
secWebSocketAccept = Convert.ToBase64String(sha1Hash);
return secWebSocketAccept;
}
我在javascript中创建了一个客户端,其中websockets连接到一个尖锐的服务器。问题是握手后我的连接关闭,我不知道为什么。我得到的唯一错误是:“无法识别的帧操作码:7”。我使用谷歌浏览器16.0.912.75。
一步一步:
之后我收到错误
var ws;
$(document).ready(function () {
// test if the browser supports web sockets
if ("WebSocket" in window) {
debug("Browser supports web sockets!", 'success');
connect($('#host').val());
$('#console_send').removeAttr('disabled');
} else {
debug("Browser does not support web sockets", 'error');
};
// function to send data on the web socket
function ws_send(str) {
try {
ws.send(str);
} catch (err) {
debug(err, 'error');
}
}
// connect to the specified host
function connect(host) {
debug("Connecting to " + host + " ...");
try {
ws = new WebSocket(host); // create the web socket
} catch (err) {
debug(err, 'error');
}
$('#host_connect').attr('disabled', true); // disable the 'reconnect' button
ws.onopen = function () {
debug("connected... ", 'success'); // we are in! Big Grin | :-D
};
ws.onmessage = function (evt) {
debug(evt.data, 'response'); // we got some data - show it omg!!
};
ws.onclose = function () {
debug("Socket closed!", 'error'); // the socket was closed (this could be an error or simply that there is no server)
$('#host_connect').attr('disabled', false); // re-enable the 'reconnect button
};
};
// function to display stuff, the second parameter is the class of the <p> (used for styling)
function debug(msg, type) {
$("#console").append('<p class="' + (type || '') + '">' + msg + '</p>');
};
// the user clicked to 'reconnect' button
$('#host_connect').click(function () {
debug("\n");
connect($('#host').val());
});
// the user clicked the send button
$('#console_send').click(function () {
ws_send($('#console_input').val());
});
$('#console_input').keyup(function (e) {
if(e.keyCode == 13) // enter is pressed
ws_send($('#console_input').val());
});
});
如果您需要更多信息,请回复。我现在正在谷歌上搜索4小时这个操作码:7期。