我想为Python套接字客户端设置超时。这意味着,套接字客户端连接到服务器然后在1秒内发送数据。如果超过1秒,该方法将引发某种异常或错误。
这是我的源代码:
def sendDataTelnet(ipTmp, strTmp):
# try to send data to <ipTmp>
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
writeLog("connecting to %s" % (ipTmp))
s.settimeout(1.0)
s.connect((ipTmp, 4242))
writeLog("connected to %s, start to send data" % (ipTmp))
s.sendall(strTmp)
s.close()
s = None
writeLog("done writing to %s" % (ipTmp))
return True
except socket.timeout:
writeLog("timed out when connecting to %s" % (ipTmp))
s.close()
s = None
return False
except socket.error:
writeLog("error when communicating with %s" % (ipTmp))
s.close()
s = None
return False
这对我不起作用。它仅适用于&#34; connect&#34;行动需要超过1秒。但是,如果连接正常但发送的大量数据需要1秒以上,则不会引发异常。
答案 0 :(得分:1)
您可以在套接字调用之前设置警报超时 完成时就清楚了。
例如
import os, signal
class TimeoutError(Exception):
pass
def handle_timeout(signum, frame):
import errno
raise TimeoutError(os.strerror(errno.ETIME))
TIMEOUT=1
signal.signal(signal.SIGALRM, handle_timeout)
signal.alarm(TIMEOUT)
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# your code ....
except TimeoutError:
print "Timeout reached"
finally:
signal.alarm(0)