粗糙简略的初版，后续多加点功能权当练手

/*

============================================================================

Name : server.c

Author : king

Version :

Copyright : Your copyright notice

Description : Hello World in C, Ansi-style

============================================================================

*/

#include <stdlib.h>

#include <pthread.h>

#include <sys/socket.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <arpa/inet.h> /* inet(3) functions */

#include <stdlib.h>

#include <errno.h>

#include <stdio.h>

#include <string.h>

int handle(int point);

int main(void) {

int sfd, ind;

struct sockaddr_in addr;

struct sockaddr_in clent;

char resv[], sendbuf[];

char buf[];

char * myaddr = "192.168.231.128";

int ret; // 返回值设置

socklen_t lent;

int pid;

addr.sin_family = AF_INET; //IPv4 Internet protocols

addr.sin_port = htons(); //这里输入服务器端口号

addr.sin_addr.s_addr = inet_addr(myaddr);

; //INADDR_ANY表示本机IP

//獲取socket描述符，IPV4asd

printf("socket start \n");

sfd = socket(AF_INET, SOCK_STREAM, );

if (sfd < ) {

printf("socket error \n");

return -;

}

printf("bind start \n");

//将套接子与指定端口链接

if (bind(sfd, (struct sockaddr *) &addr, sizeof(struct sockaddr)) < ) {

printf("bind error \n");

return -;

}

//监听套接子

printf("listen start \n");

if (listen(sfd, ) < ) {

printf("listen error \n");

return -;

}

for (;;) {

//接受来自客户端的信息

printf("accept start \n");

memset(&clent, , sizeof(clent));

lent = sizeof(clent);

ind = accept(sfd, (struct sockaddr *) &clent, &lent);

if (ind < ) {

printf("accept error %d \n", ind);

return -;

}

printf("infor \n");

printf("clent addr%s porit %d\n",

inet_ntop(AF_INET, &clent.sin_addr, buf, sizeof(buf)),

ntohs(clent.sin_port));

pid = fork();

if (pid == ) {

//子进程

close(sfd);

handle(ind);

} else if (pid < ) {

//error

close(ind);

} else {

//父进程

}

}

return EXIT_SUCCESS;

}

int handle(int point) {

int retn;

char buf[];

for (;;) {

retn = read(point, buf, sizeof(buf));

if (retn < ) {

printf("read error \n");

close(point);

break;

} else if (retn == ) {

printf("client exit \n");

close(point);

break;

}

printf("client:%s\n", buf);

if (strcmp("exit", buf) == ) {

printf("exit \n");

close(point);

return ;

}

}

return ;

}

/*

 ============================================================================

 Name        : client.c

 Author      : king

 Version     :

 Copyright   : Your copyright notice

 Description : Hello World in C, Ansi-style

 ============================================================================

 */

#include <stdio.h>

#include <stdlib.h>

#include <sys/socket.h>

#include  <netinet/in.h>

#include  <arpa/inet.h>       /* inet(3) functions */

int handle(int fd);

int main(void) {

    int nsd;

    char buf[];

    char * myaddr = "192.168.231.128";

    struct sockaddr_in addr;

    printf("welcome to echo client\n");

    nsd = socket(AF_INET, SOCK_STREAM, );

    printf("connect start1 \n");

    //bzero(addr, sizeof(*addr));

    memset(&addr,,sizeof(addr));

    printf("connect start2 \n");

    addr.sin_family = AF_INET;

    addr.sin_port = htons();

    addr.sin_addr.s_addr=inet_addr(myaddr);

    printf("connect start3 \n");

    if (connect(nsd, (struct sockaddr *)&addr, sizeof(struct sockaddr)) < ) {

        printf("connect error \n");

        return -;

    }

    sleep();

    printf("handle start\n");

    handle(nsd);

    close(nsd);

    return EXIT_SUCCESS;

}

int handle(int fd) {

    char sendl[], rev[];

    int retn;

    for (;;) {

        memset(sendl,,sizeof(sendl));

        memset(rev,,sizeof(rev));

        if (fgets(sendl, , stdin) == NULL) {

            break;

        }

        //

        printf("wirte start\n");

        write(fd, sendl, strlen(sendl));

        read(fd, rev,strlen(rev));

    }

    return ;

}