MAC OS X socket 1 [a simple example]
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MAC OS X socket 1 [a simple example]
Server Code
C:
//// main.c// unix_socket_very_simple_server//// Created by DMD on 4/7/14./* Function : Server for unix (OS X MAC)*/#include <stdio.h>#include <stdlib.h>#include <sys/types.h>// unix socket#include <sys/socket.h>#include <netinet/in.h>#include <string.h>//服务器和客户端都使用端口:12345//服务器的地址是:127.0.0.1 在服务器里可以写任意地址,但是在客户端必须写这个地址。//因为不知道服务器地址,就无法向服务器发送数据int main(int argc, const char * argv[]){ // listen port [客户端必须使用这个端口] unsigned short portnum=12345; int sfp,nfp; struct sockaddr_in s_add,c_add; int sin_size; printf("Starting listen in Server:\r\n"); //initialize socket sfp = socket(AF_INET, SOCK_STREAM, 0); //TCP : SOCK_STREAM if(-1 == sfp) { printf("initialize socket fail ! \r\n"); return -1; } printf("initialize socket ok !\r\n"); // setting socket port bzero(&s_add,sizeof(struct sockaddr_in)); s_add.sin_family=AF_INET; s_add.sin_addr.s_addr=htonl(INADDR_ANY); s_add.sin_port=htons(portnum); //bind port if(-1 == bind(sfp,(struct sockaddr *)(&s_add), sizeof(struct sockaddr))) { printf("bind fail !\r\n"); return -1; } printf("bind ok !\r\n"); //开始监听客户端端口 if(-1 == listen(sfp,5)) { printf("listen fail !\r\n"); return -1; } printf("listen ok\r\n"); while(1) { sin_size = sizeof(struct sockaddr_in); //接受来自客户端的数据 nfp = accept(sfp, (struct sockaddr *)(&c_add), &sin_size); if(-1 == nfp) { printf("accept fail !\r\n"); return -1; } // printf("accept data from client ok!\r\nServer start get connect from %d : %x\r\n",ntohl(c_add.sin_addr.s_addr),ntohs(c_add.sin_port)); printf("current client is address = %d ,port : %x\r\n",ntohl(c_add.sin_addr.s_addr),s_add.sin_port); //向客户端发送数据 if(-1 == write(nfp,"Server Said,\"hello,welcome to connect my server.\" \r\n",1024)) { printf("send data to client fail!\r\n"); return -1; } printf("send data to client ok!\r\n"); close(nfp); } close(sfp); return 0;}
Client Code
C:
//// main.c// unix_socket_very_simple_client//// Created by DMD on 4/7/14./* Function : Client for unix (OS X MAC)*/#include <stdlib.h>#include <sys/types.h>#include <stdio.h>#include <sys/socket.h>#include <netinet/in.h>#include <string.h>int main(){ int cfd; int recbytes; int sin_size; char buffer[1024]={0}; struct sockaddr_in s_add,c_add; unsigned short portnum=12345; printf("Hello,welcome to client !\r\n"); cfd = socket(AF_INET, SOCK_STREAM, 0); if(-1 == cfd) { printf("initialize socket fail ! \r\n"); return -1; } printf("initialize socket ok !\r\n"); bzero(&s_add,sizeof(struct sockaddr_in)); s_add.sin_family=AF_INET; s_add.sin_addr.s_addr= inet_addr("127.0.0.1"); s_add.sin_port=htons(portnum); printf("current server addr = %d ,port : %x\r\n",s_add.sin_addr.s_addr,s_add.sin_port); if(-1 == connect(cfd,(struct sockaddr *)(&s_add), sizeof(struct sockaddr))) { printf("connect fail !\r\n"); return -1; } printf("connect ok !\r\n"); if(-1 == (recbytes = read(cfd,buffer,1024))) { printf("read data from server fail !\r\n"); return -1; } printf("read data from server ok\r\n"); printf("Get Data From Server:\r\n"); buffer[recbytes]='\0'; printf("%s\r\n",buffer); getchar(); close(cfd); return 0;}
TEST:
Run : Server
Run :Client
1.Show some message from server in Client.
2.every open Client, show some message in Server
0 0
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