python read recv(1024)

Question

我用python构建了一个简单的websocket服务器。

我设法用javascript连接到websocket，处理握手，从浏览器发送消息，并在客户端上捕捉到它。

现在我必须从浏览器发送一条消息，并在服务器上捕获它。我使用这个：

s.send("asd")

并且在服务器上

rec = conn.recv(1024)
print rec

现在这给了我一些无厘头的角色。我试过rec.decode（"utf-8"），也是胡说八道我尝试了repr（rec），它给了我一个字符串，比如"\x8\x2……etc"

我该如何阅读这些信息？

Answer 1

    #!/usr/bin/env python
import socket, hashlib, base64, os
def parse_headers (data):
  headers = {}
  lines = data.splitlines()
  for l in lines:
    parts = l.split(": ", 1)
    if len(parts) == 2:
      headers[parts[0]] = parts[1]
  headers['code'] = lines[len(lines) - 1]
  return headers
def createKey (key):
  cc = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'
  s = hashlib.sha1()
  s.update(key+cc)
  h = s.digest()
  return str(base64.b64encode(h));
def createHandshake (data):
  headers = parse_headers(data)
  key = createKey(headers['Sec-WebSocket-Key'])
  shake = "HTTP/1.1 101 Web Socket Protocol Handshakern"
  shake += "Upgrade: WebSocketrn" 
  shake += "Connection: Upgradern"
  shake += "WebSocket-Origin: %srn" % (headers['Origin'])
  shake += "WebSocket-Location: ws://%s/rn" % (headers['Host'])
  shake += "Sec-WebSocket-Accept: "+key+"rn"
  shake += "WebSocket-Protocol: samplernrn"
  return shake
def handshake (client):
  data = client.recv(1024)
  shake = createHandshake(data)
  return client.send(shake)
def sendData(data, conn):
    length = len(data)
    if length <= 125:
        ret = bytearray([129, length])
        for byte in data.encode("utf-8"):
            ret.append(byte)
        conn.send(ret)
def sendRamUsed(conn):
  sendData("ram-"+os.popen("free -k | grep Mem | awk '{print $3}'").read(), conn)
def start_server ():
  s = socket.socket()
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  s.bind(('', 8000))
  s.listen(5)
  conn, addr = s.accept()
  print 'Connection from:', addr
  handshake(conn)
  data = "Hello"
  # sendData(os.popen("free -k | grep Mem | awk '{print $2}'").read(), conn)
  while 1:
    rec = conn.recv(1024)
    sendRamUsed(conn)

start_server()

这是我的服务器

Answer 2

您只是忘记在消息上添加编码/解码

客户端：

s.send("asd".encode('utf-8'))

服务器端：

rec = conn.recv(1024).decode('utf8')
print rec