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()