使用websocket客户端将测试消息发送到django服务器时,我无法使用可以发送和接收消息的脚本。
我尝试过以下python脚本:
import websocket
import threading
import json
from time import sleep
# handle message event
def on_message(ws, message):
print("message recieved: %s" % message)
# handle close event
def on_close(ws):
print("channel closed")
# execute as main script
if __name__ == "__main__":
websocket.enableTrace(True)
# new app object connecting to headstation
ws = websocket.WebSocketApp("ws://192.168.0.106:8000/?testI123", on_message = on_message, on_close = on_close)
# run in a new thread - kill if script ends
ws_listener = threading.Thread(target=ws.run_forever())
ws_listener.daemon = True
# start second thread
ws_listener.start()
# attempt connection 5 times
timeout = 5
while not ws.sock.connected and timeout:
sleep(1)
timeout -= 1
# error on timeout
if (timeout == 0):
print("Connection to server timed out")
print("test 1")
# periodically send test message to server
message_num = 0
while ws.sock.connected:
# send node id and message
message = 'hello %d'%message_num
ws.send(message)
sleep(1)
message_num += 1
此连接成功,由服务器指示,并接收从服务器发送的消息,但不发送任何内容。
终端上会显示类似的内容:
send: b'\x8a\x84\xe2\xe9\xa8\xe2\x8f\xdc\xe2\x84'
如果我只是使用
ws = websocket.WebSocket()
ws.connect(url)
ws.send("hello")
然后这完美。建议上面显示的我的小python脚本有问题。
答案 0 :(得分:1)
发现问题,当然是愚蠢的错误:
ws_listener = threading.Thread(target=ws.run_forever())
应该是:
ws_listener = threading.Thread(target=ws.run_forever)
没有括号。
第一个将ws.run_forever的结果传递给目标,第二个将ws.run_forever设置为目标,这是预期的结果。