所以我对 Python 中的 websocket 有疑问。我正在尝试与使用 websockets 进行某些内容通信的网站进行交互。这是他们网站上的 javascript 代码:
var $j = jQuery.noConflict(); // Use $j to reference JQuery selectors instead of $
function sockify() {
var ws = new WebSocket("ws://website:1234");
ws.onmessage = function (evt) {
console.log(evt.data)
$j('#output').html(evt.data);
}
ws.onopen = function () {
ws.send(JSON.stringify($j('#srctext').val()));
}
ws.onerror = function () {
alert("socket down");
}
}
所以该站点工作正常，没有问题，但是当我尝试此 python 代码时，我收到一条错误消息，指出套接字在打开后立即关闭:
ws = create_connection("ws://website:1234/")
print "Sending 'Hello, World'..."
ws.send("Hello, World")
print "Sent"
print "Receiving..."
result = ws.recv()
print "Received '%s'" % result
ws.close()
这是从 websocket man page on python.org 中提取的示例代码，如果我不将主机更改为我要从中提取的网站，而是将示例的主机保留在示例中，它确实有效。
这是我收到的错误:
Traceback (most recent call last):
File "irc.py", line 462, in <module>
tmpmsg = getSocket()
File "irc.py", line 64, in getTrump
result = ws.recv()
File "/Library/Python/2.7/site-packages/websocket/_core.py", line 293, in recv
opcode, data = self.recv_data()
File "/Library/Python/2.7/site-packages/websocket/_core.py", line 310, in recv_data
opcode, frame = self.recv_data_frame(control_frame)
File "/Library/Python/2.7/site-packages/websocket/_core.py", line 323, in recv_data_frame
frame = self.recv_frame()
File "/Library/Python/2.7/site-packages/websocket/_core.py", line 357, in recv_frame
return self.frame_buffer.recv_frame()
File "/Library/Python/2.7/site-packages/websocket/_abnf.py", line 336, in recv_frame
self.recv_header()
File "/Library/Python/2.7/site-packages/websocket/_abnf.py", line 286, in recv_header
header = self.recv_strict(2)
File "/Library/Python/2.7/site-packages/websocket/_abnf.py", line 371, in recv_strict
bytes_ = self.recv(min(16384, shortage))
File "/Library/Python/2.7/site-packages/websocket/_core.py", line 427, in _recv
return recv(self.sock, bufsize)
File "/Library/Python/2.7/site-packages/websocket/_socket.py", line 93, in recv
"Connection is already closed.")
websocket._exceptions.WebSocketConnectionClosedException: Connection is already closed.
知道为什么它会立即关闭吗？
编辑:
在 enableTrace 为真时运行。
这是我得到的错误:
--- request header ---
GET / HTTP/1.1
Upgrade: websocket
Connection: Upgrade
Host: website
Origin: website
Sec-WebSocket-Key: 6jsV5DEWXPGTTTLKSEwz6g==
Sec-WebSocket-Version: 13
-----------------------
--- response header ---
HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Accept: CX4DYsItQC6utXvt8JH641455mM=
-----------------------
send: '\x81\x8b\x98\x8d\x81\xce\xd0\xe8\xed\xa2\xf7\xad\xd6\xa1\xea\xe1\xe5'
请注意，我实际上无法控制 websocket，因此任何修复都需要由我来完成。我在使用 Python 2.7.10
我还注意到，如果我在使用网站时在Burp中拦截websocket请求，websocket初始连接请求是不同的。这是从网站上截取的:
GET / HTTP/1.1
Host: website
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:50.0) Gecko/20100101 Firefox/50.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Sec-WebSocket-Version: 13
Origin: website
Sec-WebSocket-Extensions: permessage-deflate
Sec-WebSocket-Key: uyG2WBK51ZtPhy9RXLNTmg==
Connection: keep-alive, Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
请您参考如下方法:
你肯定有一个错误(很可能你的套接字正在无声地爆炸..)
改为在配置中为套接字中的错误设置回调并打印您收到的消息..
示例:(取自 here )
websocket.enableTrace(True)
ws = websocket.WebSocketApp("ws://echo.websocket.org/",
on_message = on_message,
on_error = on_error,
on_close = on_close)
定义方法
def on_error(ws, error):
print(error)
