多线程服务器

/***
server.c
***/
#include<stdio.h>
#include<fcntl.h>
#include<string.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<signal.h>
#include<sys/wait.h>
#include<ctype.h>
#include<unistd.h>
#include<pthread.h>

#include"wrap.h"

#define MAXLINE 8192
#define SERV_PORT 8000

struct s_info
{
    struct sockaddr_in cliaddr;
    int connfd;
};

void *do_work(void *arg)
{
    int n,i;
    struct s_info *ts = (struct s_info*)arg;
    char buf[MAXLINE];
    char str[INET_ADDRSTRLEN];

    while(1)
    {
        n = Read(ts->connfd,buf,MAXLINE) ;
        if( 0 == n)
        {
            printf("the client %d close...
",ts->connfd) ;
            break;
        }
        printf("received from %s at PORT:%d
",
                inet_ntop(AF_INET,&(*ts).cliaddr.sin_addr,str,sizeof(str)),
            ntohs((*ts).cliaddr.sin_port));

        for(i = 0 ; i < n; i++)
            buf[i] = toupper(buf[i]);

        Write(STDOUT_FILENO,buf,n);
        Write(ts->connfd,buf,n);
    }
    close(ts->connfd);

    return (void*)0;

}
int main() {

    struct sockaddr_in servaddr,cliaddr;
    socklen_t cliaddr_len;
    int listenfd,connfd;
    pthread_t tid;
    struct s_info ts[256];
    int i = 0;

    listenfd = Socket(AF_INET,SOCK_STREAM,0);

    bzero(&servaddr,sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_port = htons(SERV_PORT);
    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
    //inet_pton(AF_INET,"192.168.0.1",&serv_addr.sin_addr.s_addr);
    Bind(listenfd,(struct sockaddr *)&servaddr,sizeof(servaddr));
    Listen(listenfd,128);

    printf("Accepting client connect ...
");
        while(1)
        {
            cliaddr_len = sizeof(cliaddr);
            connfd = Accept(listenfd,(struct sockaddr *)&cliaddr,&cliaddr_len);

            ts[i].cliaddr = cliaddr;
            ts[i].connfd = connfd;

            pthread_create(&tid,NULL,do_work,(void *)&ts[i]);
            pthread_detach(tid);
            i++;
        }
    return 0;
}

/***
makefile
***/
src = $(wildcard *.c)
obj = $(patsubst %.c, %.o, $(src))

all: server client

server: server.o wrap.o
    gcc server.o wrap.o -o server -Wall -lpthread
client: client.o wrap.o
    gcc client.o wrap.o -o client -Wall -lpthread

%.o:%.c
    gcc -c $< -Wall

.PHONY: clean all
clean: 
    -rm -rf server client $(obj)

makefile主要是添加了-lpthread线程库

这是服务器编写代码，客户端代码可以使用上篇，也可以使用命令:nc + IP地址+端口号来代替客户端作用

运行结果：

还使用了wrap.c和wrap.h文件，在上篇博客有，这里就重复使用了。