此问题之前已被提出,但没有一个答案对我的案例有帮助。问题似乎很简单。我在覆盆子pi上运行TCP服务器并尝试从另一台机器连接到它。我有一个自定义类接收器,用于将传感器数据传输到此脚本。
当我关闭在另一台机器上运行的程序时(插座是'关机(2)' d然后'关闭()' d),我无法重新连接到那个港口了。我试图在两个插座(1180和1181)之间交替,但这不起作用。当我通过端口连接一次时,它将永远消失,直到我重新启动TCP服务器。我尝试重新启动脚本(使用executl()),但这并没有解决我的问题。我告诉套接字它应该重用地址但无济于事。
我能做的是使用更多的端口,但这需要在RPi上打开更多端口,我想避免(必须有另一种解决方法)。
import socket
from receiver import receiver
import pickle
import time
import os
import sys
TCP_IP = ''
TCP_PORT = 1180
BUFFER_SIZE = 1024
print 'Script started'
while(1):
try:
print 'While begin'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
print 'Socket created'
s.settimeout(5)
print 'Trying to bind'
s.bind((TCP_IP, TCP_PORT))
print 'bound to', (TCP_IP, TCP_PORT)
s.listen(1)
print 'listening for connection'
conn, addr = s.accept()
print 'accepted incoming connection'
s.settimeout(5)
r = receiver()
print 'Connection address:', addr
for cur in r:
#print "sending data:", cur
print len(cur.tostring())
conn.send(cur.tostring()) # echo
except Exception as e:
r.running = False
print e
if TCP_PORT == 1181:
TCP_PORT = 1180
else:
TCP_PORT = 1181
time.sleep(1)
print 'sleeping 1sec'
答案 0 :(得分:3)
您的服务器套接字仍在使用中,因此您无法为每个端口打开多个服务器套接字。但为什么要这样呢。只需为所有连接重复使用相同的套接字(即服务器套接字的用途):
import socket
from receiver import receiver
import logging
TCP_IP = ''
TCP_PORT = 1180
BUFFER_SIZE = 1024
print 'Script started'
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'Socket created'
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
print 'Trying to bind'
server.bind((TCP_IP, TCP_PORT))
print 'bound to', (TCP_IP, TCP_PORT)
server.listen(1)
print 'listening for connection'
while True:
try:
conn, addr = server.accept()
print 'accepted incoming connection'
print 'Connection address:', addr
for cur in receiver():
data = cur.tostring()
#print "sending data:", cur
print len(data)
conn.sendall(data) # echo
except Exception:
logging.exception("processing request")