[轉] Socket通訊執行個體

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Client端：

#include <stdio.h>#include <sys/socket.h>#include <sys/types.h>#include <stdlib.h>#include <netinet/in.h>#include <errno.h>#include <string.h>#include <arpa/inet.h>#include <unistd.h>#define MAXLINE 1024int main(int argc,char **argv){    //char *servInetAddr = "10.68.6.28";    int socketfd;    struct sockaddr_in sockaddr;    char recvline[MAXLINE], sendline[MAXLINE];    int n;    if(argc != 2)    {        printf("client <ipaddress> \n");        exit(0);    }        printf("argv[0]=%s, argv[1]=%s\n", argv[0], argv[1]);    socketfd = socket(AF_INET,SOCK_STREAM,0);    memset(&sockaddr,0,sizeof(sockaddr));    sockaddr.sin_family = AF_INET;    sockaddr.sin_port = htons(10004);    //inet_pton(AF_INET,servInetAddr,&sockaddr.sin_addr);    inet_pton(AF_INET,argv[1],&sockaddr.sin_addr);        if((connect(socketfd,(struct sockaddr*)&sockaddr,sizeof(sockaddr))) < 0 )    {        printf("connect error %s errno: %d\n",strerror(errno),errno);        exit(0);    }    printf("send message to server\n");    fgets(sendline,1024,stdin);    if((send(socketfd,sendline,strlen(sendline),0)) < 0)    {        printf("send mes error: %s errno : %d",strerror(errno),errno);        exit(0);    }    close(socketfd);    printf("exit\n");    exit(0);}

編譯client：

gcc client.c -o client

server端：

#include <stdio.h>#include <sys/socket.h>#include <sys/types.h>#include <string.h>#include <netinet/in.h>#include <stdlib.h>#include <errno.h>#include <unistd.h>#include <arpa/inet.h>#define MAXLINE 1024int main(int argc,char **argv){    int listenfd,connfd;    struct sockaddr_in sockaddr;    char buff[MAXLINE];    int n;    memset(&sockaddr,0,sizeof(sockaddr));    sockaddr.sin_family = AF_INET;    sockaddr.sin_addr.s_addr = htonl(INADDR_ANY);    sockaddr.sin_port = htons(10004);    listenfd = socket(AF_INET,SOCK_STREAM,0);    bind(listenfd,(struct sockaddr *) &sockaddr,sizeof(sockaddr));    listen(listenfd,1024);    printf("Please wait for the client information\n");    for(;;)    {        if((connfd = accept(listenfd,(struct sockaddr*)NULL,NULL))==-1)        {            printf("accpet socket error: %s errno :%d\n",strerror(errno),errno);            continue;        }        n = recv(connfd,buff,MAXLINE,0);        buff[n] = '\0';        printf("recv msg from client:%s",buff);        close(connfd);    }    close(listenfd);}

編譯server：

gcc server.c -o server

測試：

[email protected]:~/Test/socket$ ./server &
[1] 24041
[email protected]:~/Test/socket$ Please wait for the client information

[email protected]:~/Test/socket$ ./client 127.0.0.1
send message to server // client 輸出內容
Hello world! // client 輸出內容
exit
recv msg from client:Hello world! // server 輸出內容
[email protected]:~/Test/socket$

[轉] Socket通訊執行個體