socket 的API文档

python socket

socket.recv(bufsize[, flags])

Receive data from the socket. The return value is a string representing the data received. 
The maximum amount of data to be received at once is specified by bufsize. See the Unix manual page recv(2) for the meaning of the optional argument flags; it defaults to zero.

这里说 return value is a string representing 是什么意思？

如下的程序，客户端为什么 print data 打印出的是乱码，这个不是 ASCII 码表示的 510 吗？ -------------------------------------客户端------------------------- `

Echo client program

import socket

HOST = '127.0.0.1' # The remote host PORT = 50007 # The same port as used by the server s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((HOST, PORT)) s.sendall('\x05\x01\x00') data = s.recv(1024) s.close()

print data print 'Received', repr(data) ---------------------------------服务器端--------------------------------------

Echo server program

import socket

HOST = '' # Symbolic name meaning all available interfaces PORT = 50007 # Arbitrary non-privileged port s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind((HOST, PORT)) s.listen(1) conn, addr = s.accept() print 'Connected by', addr while 1: data = conn.recv(1024) if not data: break conn.sendall(data) conn.close() `