python socket 基本使用

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socket通常也叫做“通訊端”，用於串連server client，是一個通訊鏈的控制代碼，應用程式通常通過通訊端向網路發出請求或應答網路請求。

就像python 處理file一樣：

file是針對某個檔案 開啟-->讀寫-->關閉

socket是針對伺服器 用戶端進行 開啟-->讀寫-->關閉

server部分：

import socket,sysserver_address=(‘127.0.0.1‘, 8000)BUF_SIZE=1024try:   server_sk=socket.socket(socket.AF_INET, socket.SOCK_STREAM)     #建立新的socket對象except socket.error, msg:   print "socket create fail, error code:" + str(msg[0]) + ‘error message:‘ + msg[1]print ‘socket create successfully‘try:   server_sk.bind(server_address)                                   #綁定server地址，address取決於地址族，AF_INET以元組表示except socket.error, msg:   print "socket bind address error:" + str(msg[0]) + ‘error mssage:‘ + msg[1]print ‘socket bind address successfully‘server_sk.listen(5)print "listening..."while True:   client_sk, client_addr = server_sk.accept()   print "connected by:", client_addr   while True:      data=client_sk.recv(BUF_SIZE)      print data      client_sk.sendall(data)server_sk.close()

參數一：地址簇socket.AF_INET IPv4（預設）socket.AF_INET6 IPv6

參數二：類型socket.SOCK_STREAM　　流式socket , for TCP （預設）socket.SOCK_DGRAM　　 資料報式socket , for UDP

Client部分：

import socket,sysserver_address=(‘127.0.0.1‘, 8000)BUF_SIZE=1024try:   client_sk=socket.socket(socket.AF_INET, socket.SOCK_STREAM)except socket.error, msg:   print "socket create fail, error code:" + str(msg[0]) + ‘error message:‘ + msg[1]client_sk.connect(server_address)while True:   data= raw_input(‘please input your sending message->‘)   if not data:      print "input data cannot be empty, please input again.."      continue   client_sk.sendall(data)   recv_data = client_sk.recv(BUF_SIZE)   print recv_dataclient_sk.close()

server 輸出：

socket create successfully
socket bind address successfully
listening...
connected by: (‘127.0.0.1‘, 63388)
aa

client 輸出：

please input your sending message->aa
aa
please input your sending message->

python socket 基本使用