socket编程python+c

python版：

server:

def socket_loop_server_function():
    HOST = '192.168.56.1'
    PORT = 21567
    sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sk.bind((HOST, PORT))
    sk.listen(1)
    while True:
        sock, addr = sk.accept()
        sock.sendall(b'begin')
        flag=True
        while flag:
            data=sock.recv(1024)
            print("recevied:%s" % data)
            if data == bytes("msg1",encoding="utf-8"):
                feedback=input("please input the feedback:")
                sock.send(bytes(feedback, encoding='utf-8'))
                if feedback == "over":
                    flag=False
            if data == bytes("msg3",encoding="utf-8"):
                feedback = input("please input the feedback:")
                sock.send(bytes(feedback, encoding='utf-8'))
                if feedback == "over":
                    flag = False
            if data == bytes("msg5",encoding="utf-8"):
                feedback = input("please input the feedback:")
                sock.send(bytes(feedback, encoding='utf-8'))
                if feedback == "over":
                    flag = False
        sock.close()
        break
    print("connect finished")
client:

def socket_loop_customer_function():
    HOST = '192.168.56.1'
    PORT = 21567
    client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    client.connect((HOST, PORT))
    client.settimeout(10)
    flag=True
    while flag:
        reveived_data=client.recv(1024)
        print(reveived_data)
        if reveived_data == bytes("over",encoding="utf-8"):
            client.close()
            flag=False
            time.sleep(2)
        if reveived_data == bytes("begin",encoding="utf-8"):
            client.sendall(bytes('msg1', encoding="utf-8"))
        if reveived_data == bytes("msg2",encoding="utf-8"):
            client.sendall(bytes('msg3', encoding="utf-8"))
        if reveived_data == bytes("msg4",encoding="utf-8"):
            client.sendall(bytes('msg5', encoding="utf-8"))
    print("connect closed")

c语言版：
在windows上用codeblocks编写socket需要导入socket的库，在complier中导入libws2_32.a和libwsock32.a

代码如下：

#include <winsock2.h>

#pragma comment(lib , "ws2_32.lib")  #导入库

void socket_function(){
WSADATA wsd;
struct sockaddr_in dest;
char buf[400];
char sendbuf[400];
WSAStartup( MAKEWORD(2, 2), &wsd);           #加载库
SOCKET socketfd= socket(AF_INET, SOCK_STREAM,IPPROTO_TCP);
dest.sin_family=AF_INET;
dest.sin_port=htons(21567);
dest.sin_addr.s_addr=inet_addr("192.168.56.1");
memset(&(dest.sin_zero),0,sizeof(struct sockaddr_in));
if(connect(socketfd,(struct sockaddr*)&dest,sizeof(struct sockaddr_in)) == -1){
printf("failed %d\n",WSAGetLastError());
}
while(1){
printf("connect success\n");
recv(socketfd,buf,1024,0);
printf("buf=%s\n",buf);
// strcpy(sendbuf,"msg1");
printf("please input the msg:\n");
scanf("%s",sendbuf);
send(socketfd,sendbuf,strlen(sendbuf),0);
}
closesocket(socketfd);
WSACleanup();
}