一.背景
好久没有进行linux下的socket编程了,复习一下
二.服务端完整代码
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <unistd.h>
#define PORT (9000)
#define MAX_BACKLOG (5)
#define SEND_CONTENT "hello,jello"
void main(void){
int listenfd,new_fd;
struct sockaddr_in myaddr;
listenfd = socket(AF_INET,SOCK_STREAM,0);
memset(&myaddr,0,sizeof(myaddr));
myaddr.sin_family = AF_INET;
myaddr.sin_port = htons(PORT);
myaddr.sin_addr.s_addr = htonl(INADDR_ANY);
bind(listenfd,(struct sockaddr*)&myaddr,sizeof(struct sockaddr));
listen(listenfd,MAX_BACKLOG);
while(1){
new_fd = accept(listenf,(struct sockaddr*)NULL,NULL);
send(new_fd,SEND_CONTENT,strlen(SEND_CONTENT),0)
usleep(1);
close(new_fd);
}
close(listenfd);
}
三.客户端完整代码
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#define PORT (9000)
#define SERVER_IP "127.0.0.1"
#define BUFF_SIZE (100)
void main(void){
int fd,num;
struct sockaddr_in server_addr;
char buff[BUFF_SIZE] = {0};
fd = socket(AF_INET,SOCK_STREAM,0);
memset(&server_addr,0,sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(PORT);
inet_pton(AF_INET,SERVER_IP,&server_addr.sin_addr);
connect(fd,(struct sockaddr*)&server_addr,sizeof(struct sockaddr));
num = recv(fd,buff,sizeof(buff),0);
buff[num] = '\0';
printf("buff = %s,num = %d\n",buff,n);
close(fd);
}
四.编译及运行
gcc server.c -o server
gcc client.c -o client
./server &
./client