Question

我试图使用python打开服务器套接字

我使用的代码等待连接并暂停循环，直到尝试执行此行时达到下一个连接＆gt;＆gt;

connection，client_address = sock.accept（）

但我不需要暂停循环

是否有任何方法可以使代码跳过此行并在没有连接的情况下继续循环

代码：

服务器

＆＃13;

import socket
import sys

# Create a TCP/IP socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Bind the socket to the port
server_address = ('localhost', 10000)
print >>sys.stderr, 'starting up on %s port %s' % server_address
sock.bind(server_address)

# Listen for incoming connections
sock.listen(5)

while True:
    # Wait for a connection
    print >>sys.stderr, 'waiting for a connection'
    connection, client_address = sock.accept()
	
    try:
        print >>sys.stderr, 'connection from', client_address

        # Receive the data in small chunks and retransmit it
        while True:
            data = connection.recv(16)
            print >>sys.stderr, 'received "%s"' % data
            if data:
                print >>sys.stderr, 'sending data back to the client'
                connection.sendall(data)
            else:
                print >>sys.stderr, 'no more data from', client_address
                break
            
    finally:
        # Clean up the connection
        connection.close()

＆＃13;

客户端

＆＃13;

import socket
import sys

# Create a TCP/IP socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Connect the socket to the port where the server is listening
server_address = ('localhost', 10000)
print >>sys.stderr, 'connecting to %s port %s' % server_address
sock.connect(server_address)


try:
    
    # Send data
    message = 'This is the message.  It will be repeated.'
    print >>sys.stderr, 'sending "%s"' % message
    sock.sendall(message)

    # Look for the response
    amount_received = 0
    amount_expected = len(message)
    
    while amount_received < amount_expected:
        data = sock.recv(32)
        amount_received += len(data)
        print >>sys.stderr, 'received "%s"' % data

finally:
    print >>sys.stderr, 'closing socket'
    sock.close()

＆＃13;

Answer 1

你想要的是：

接受另一个线程中的套接字
使用异步套接字API

我不太了解Python，但我很确定它不支持线程，所以异步IO就是这样。快速搜索为我提供了https://docs.python.org/2/library/asyncore.html

Answer 2

您可以将套接字设置为非阻塞，如果没有准备好连接而不是无限制地阻塞，则会返回错误

sock.setblocking(False)
try:
    connection, client_address = sock.accept()
except:
    print 'No Connection'

Python TCP服务器套接字

2 个答案: