C/C++教程

Web服务器1-socket编程

本文主要是介绍Web服务器1-socket编程，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

基于华为鲲鹏云服务器CentOS中（或Ubuntu），使用Linux Socket实现：

1. time服务器的客户端服务器，提交程序运行截图

查看IP地址

代码如下：

//timeclient.c
#include <stdio.h>
#include <netinet/in.h>                                                                   
#include <arpa/inet.h>
#include <netdb.h>    
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <string.h>

#define RIO_BUFSIZE 8192

typedef struct{
    int rio_fd;
    int rio_cnt;
    char *rio_bufptr;
    char rio_buf[RIO_BUFSIZE];

}rio_t;

#define MAXLINE 200

int main(int argc,char **argv)
{
    int clientfd,port;
    char *host,buf[MAXLINE];
    char sbuf[MAXLINE];
    char rbuf[MAXLINE];
    rio_t rio;
    char str1[MAXLINE]="客户端IP:";
    char str2[MAXLINE]="学号:20191316";
    char str3[MAXLINE]="当地时间:";
    if(argc!=3)
    {
        fprintf(stderr,"usage:%s <host> <port>\n",argv[0]);
        exit(0);
    }
    host = argv[1];
    port = atoi(argv[2]);
    clientfd = open_clientfd(host,port);  
    while(1)
    {        
        recv(clientfd,rbuf,MAXLINE,0);
        printf("%s",str1);
        puts(host);
        printf("%s",str2);
        putchar('\n');
        printf("%s",str3);     
        puts(rbuf);       
        close(clientfd);      
        exit(0);
    }
}


//timeserver.c
#include <stdio.h>
#include <unistd.h>
#include <netinet/in.h>                                                                   
#include <arpa/inet.h>
#include <netdb.h>    
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>

#define MAXLINE 200
#define RIO_BUFSIZE 8192

typedef struct{
	   int rio_fd;
	   int rio_cnt;
	   char *rio_bufptr;
	   char rio_buf[RIO_BUFSIZE];

}rio_t;

typedef struct sockaddr SA;

typedef struct{
	int tm_sec;
	int tm_min;
	int tm_hour;
	int tm_mday;
	int tm_mon;
	int tm_year;
	int tm_wday;
	int tm_yday;
	int tm_isdst;
}tm;

void sigchld_handler(int sig)
{
	    pid_t pid;
	    int stat;
	    while((pid = waitpid(-1,&stat,WNOHANG))>0)
            {
	        printf("child %d terminated\n",pid); 
            }
	    return;
}

int main(int argc,char **argv)
{
	    int listenfd,connfd,port,clientlen;
	    struct sockaddr_in clientaddr;
	    struct hostent *hp;
	    char *haddrp;
	    char sbuf[MAXLINE];
	    char rbuf[MAXLINE];
	    rio_t rio;
	    time_t lt;
	    tm *local;
	    char str1[MAXLINE]="客户端IP:";
	    char str2[MAXLINE]="服务器实现者学号:";
	    char str3[MAXLINE]="当地时间:";
            if(argc != 2)
            {							        
                fprintf(stderr,"usage:%s <port>\n",argv[0]);
                  exit(0);
	    }
            port = atoi(argv[1]);
            signal(SIGCHLD,sigchld_handler);
            listenfd = open_listenfd(port)
            while(1)
            {							        
                 clientlen = sizeof(clientaddr);
                 connfd = accept(listenfd,(SA *)&clientaddr,&clientlen);
                 hp = gethostbyaddr((const char*)&clientaddr.sin_addr.s_addr,
                 sizeof(clientaddr.sin_addr.s_addr),AF_INET);
                 haddrp = inet_ntoa(clientaddr.sin_addr);
                 printf("server connected to %s (%s)\n",hp->h_name,haddrp);
                 if(fork() == 0)
                 {
                     close(listenfd);
                     lt = time(NULL); 
                     local = localtime(&lt);
                     strftime(sbuf,64,"%Y-%m-%d %H:%M:%S",local);
                     send(connfd,sbuf,MAXLINE,0);
                     close(connfd);
                     exit(0);
                 }
             close(connfd);
	     }																        }
}

2. echo服务器的客户端服务器，提交程序运行截图，服务器把客户端传进来的内容加入“服务器进程pid 你的学号 姓名 echo :”返回给客户端

可见客户端输入的内容被服务器又返回给客户端了

代码如下

\\echoclient.c
#include <stdio.h>
#include <netinet/in.h>                                                                   
#include <arpa/inet.h>
#include <netdb.h>    
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <string.h>

#define RIO_BUFSIZE 8192

typedef struct{
    int rio_fd;
    int rio_cnt;
    char *rio_bufptr;
    char rio_buf[RIO_BUFSIZE];

}rio_t;

#define MAXLINE 200

int main(int argc,char **argv){

    int clientfd,port;
    char *host,buf[MAXLINE];
    char sbuf[MAXLINE];
    char rbuf[MAXLINE];
    rio_t rio;
    char str1[MAXLINE]="服务器进程pid:";
    char str2[MAXLINE]="学号姓名:20191316 王秋雨";
    
    char str3[MAXLINE]="echo:";

    if(argc!=3){
    
        fprintf(stderr,"usage:%s <host> <port>\n",argv[0]);
        exit(0);
    }
    host = argv[1];
    port = atoi(argv[2]);

    clientfd = open_clientfd(host,port);
  
    while(1){
        scanf("%[^\n]",sbuf);
        send(clientfd,sbuf,MAXLINE,0);

        recv(clientfd,rbuf,MAXLINE,0);

        printf("%s",str1);
        printf("%d\n",getpid());

        printf("%s",str2);
        putchar('\n');

        printf("%s",str3);

        puts(rbuf);
       
        close(clientfd);
       
        exit(0);
    }

}


//echoserver.c
#include <stdio.h>
#include <unistd.h>
#include <netinet/in.h>                                                                   
#include <arpa/inet.h>
#include <netdb.h>    
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <pthread.h>

#define MAXLINE 200
#define RIO_BUFSIZE 8192

typedef struct{
    int rio_fd;
    int rio_cnt;
    char *rio_bufptr;
    char rio_buf[RIO_BUFSIZE];

}rio_t;

typedef struct sockaddr SA;

typedef struct{
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday;
int tm_yday;
int tm_isdst;
}tm;


void *thread(void *vargp);

int main(int argc,char **argv){

    int listenfd,*connfdp,port;
    int clientlen;
    struct sockaddr_in clientaddr;
    struct hostent *hp;
    char *haddrp;
    pthread_t tid;

    if(argc != 2){
    
        fprintf(stderr,"usage:%s <port>\n",argv[0]);
        exit(0);
    }

    port = atoi(argv[1]);

    listenfd = open_listenfd(port);
    
    
    while(1){
    
        clientlen = sizeof(clientaddr);

        connfdp =malloc(sizeof(int));
    
        *connfdp = accept(listenfd,(SA *)&clientaddr,&clientlen);


        hp = gethostbyaddr((const char*)&clientaddr.sin_addr.s_addr,
                sizeof(clientaddr.sin_addr.s_addr),AF_INET);

        haddrp = inet_ntoa(clientaddr.sin_addr);

        printf("server connected to %s (%s)\n",hp->h_name,haddrp);

        pthread_create(&tid,NULL,thread,connfdp);

        pthread_join(tid,NULL);
    }
}


void *thread(void *vargp){
    
    time_t lt;
    tm *local;
    char sbuf[MAXLINE];
    char rbuf[MAXLINE];
    int connfd = *((int*)vargp);

    free(vargp);

    pthread_detach(pthread_self());

    recv(connfd,rbuf,MAXLINE,0);
    printf("The massage is :%s\n",rbuf);
    send(connfd,rbuf,MAXLINE,0);

    close(connfd);
    
    return NULL;
}

全部代码如下：https://gitee.com/qiu_yu_wang/code/tree/master/socket

3. 服务器部署到华为云服务器，客户端用Ubuntu虚拟机。

由于华为云余额不足，我选择了两个虚拟机来操作

查看虚拟机的IP地址为：192.168.78.128

这篇关于Web服务器1-socket编程的文章就介绍到这儿，希望我们推荐的文章对大家有所帮助，也希望大家多多支持为之网！
您可能喜欢
栏目导航