Python socket（TCP阻塞模式）基础程式

前置知识：Python基础语法，socket库

tips：

1. 默认HOST_IP：127.0.0.1

2. 默认HOST_PORT：7676

参考代码：

1. 客户端程式

#!/usr/bin/env python
# encoding: utf-8
import socket
import os
import sys
import time
import traceback

reload(sys)
sys.setdefaultencoding("utf-8")

def SocketInit():
	try:
		s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
	except Exception as e:
		print "[-]Socket Create Error"
		sys.exit(-1)
	else:
		print "[*]Socket Create Success"
	return s

def Conn(s,host,port):
	while 1:
		try:
			s.connect((host,port))
		except Exception as e:
			print "[-]Socket Connect Error"
			#traceback.print_exc()
			time.sleep(2)
			#sys.exit(-1)
		else:
			print "[*]Socket Connect Success"
			break

def main():
	host = "127.0.0.1"
	port = 7676
	sC = SocketInit()
	Conn(sC, host, port)
	print sC.recv(1024)
	try:
		while 1:
			Str_buffer = raw_input(host+":"+str(port)+">")
			try:
				sC.send(Str_buffer)
			except Exception as e:
				print "[-]Can not send Data"
			else:
				recv_buffer = sC.recv(1024)
				if not recv_buffer:
					print "[-]Server is Off"
				else:
					print recv_buffer
	except KeyboardInterrupt:
		sC.close()
		sys.exit(0)

if __name__ == '__main__':
	main()

2. 服务端程式

#!/usr/bin/env python
# encoding: utf-8
import socket
import os
import sys
import time

reload(sys)
sys.setdefaultencoding("utf-8")

def SocketInit():
	try:
		s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
	except Exception as e:
		print "[-]Socket Create Error"
		sys.exit(-1)
	else:
		print "[*]Socket Create Success"
	return s

def BindSocket(s,host,port):
	try:
		s.bind((host,port))
	except Exception as e:
		print "[-]Socket Bind Error"
		sys.exit(-1)
	else:
		print "[*]Socket Bind Success"

def main():
	host = "127.0.0.1"
	port = 7676
	sS = SocketInit()
	BindSocket(sS, host, port)
	sS.listen(1)

	try:
		print "[+]Waiting for Connect ..."
		sC,addr = sS.accept()
	except Exception as e:
		print "[-]Server Accept Error"
		sys.exit(-1)
	sC.send("[*]Welcome to PeterZ-Server")

	print "[*]Connect to %s:%d" % (addr[0],addr[1])

	while 1:
		try:
			Str_buffer = sC.recv(1024)
			Send_buffer = "%s:%s(%s)>%s" % (addr[0],addr[1],time.ctime(),Str_buffer)
			sC.send(Send_buffer)
			print Send_buffer
		except KeyboardInterrupt:
			sS.close()
			sC.close()
			sys.exit(0)
		except Exception:
			print "[-]Client is down"
			sys.exit(0)

if __name__ == '__main__':
	main()