什么网站管理系统好,医疗网站建设流程,c 语言网站建设,GTA5房产网站建设中转载请注明出处#xff1a;http://www.cnblogs.com/kevince/p/3891033.html ——By Kevince 最近在看linux网络编程相关#xff0c;现学现卖#xff0c;就写了一个简易的C/S即时通信程序#xff0c;代码如下#xff1a; head.h 1 /*头文件#xff0c;client和server…转载请注明出处http://www.cnblogs.com/kevince/p/3891033.html ——By Kevince 最近在看linux网络编程相关现学现卖就写了一个简易的C/S即时通信程序代码如下 head.h 1 /*头文件client和server编译时都需要使用*/2 #include unistd.h3 #include stdio.h4 #include sys/types.h5 #include sys/socket.h6 #include string.h7 #include pthread.h8 #include stdlib.h9 #include netinet/in.h
10 #include arpa/inet.h
11
12 #define MSGLEN 1000
13 #define IPLEN 15
14
15 typedef int SOCKET; server.c: 1 /*server*/2 3 #include head.h4 5 char msg_recv[MSGLEN], msg_send[MSGLEN];6 SOCKET server_sockfd, client_sockfd;7 8 void *thread_function(void *argv) /*线程函数*/9 {
10 while(1){
11 gets(msg_send);
12 write(client_sockfd, msg_send, MSGLEN);
13 }
14 pthread_exit(NULL);
15 }
16
17 int main(int arg, char *argv[])
18 {
19 int server_len, client_len;
20 struct sockaddr_in server_address;
21 struct sockaddr_in client_address;
22 int port;
23 int res;
24
25 pthread_t a_thread;
26 void *thread_result;
27
28 if (arg ! 2){
29 printf(server --portnum\n);
30 exit(EXIT_FAILURE);
31 }
32
33 sscanf(argv[1], %d, port); /*读入端口*/
34
35 server_sockfd socket(AF_INET, SOCK_STREAM, 0);
36 server_address.sin_family AF_INET;
37 server_address.sin_addr.s_addr inet_addr(127.0.0.1);
38 server_address.sin_port htons(port);
39
40 server_len sizeof(server_address);
41 bind(server_sockfd, (struct sockaddr *)server_address, server_len); /*绑定端口并监听*/
42 listen(server_sockfd, 10);
43 printf(listen...\n);
44
45 client_len sizeof(client_address);
46 client_sockfd accept(server_sockfd, (struct sockaddr *)client_address, client_len);
47 printf(connection success!\n);
48
49 res pthread_create(a_thread, NULL, thread_function, NULL); /*启动线程函数*/
50 if (res ! 0){
51 perror(Thread creation failed);
52 exit(EXIT_FAILURE);
53 }
54
55 while(read(client_sockfd, msg_recv, MSGLEN)){
56 printf(msg from client: %s\n, msg_recv);
57 }
58 close(client_sockfd);
59 exit(EXIT_SUCCESS);
60 } client.c: 1 /*client*/2 3 #include head.h4 5 char msg_recv[MSGLEN],msg_send[MSGLEN];6 SOCKET sockfd;7 8 void *thread_function(void *argv) /*线程函数*/9 {
10 while(1){
11 gets(msg_send);
12 write(sockfd, msg_send, MSGLEN);
13 }
14 pthread_exit(NULL);
15 }
16
17 int main(int arg, char *argv[])
18 {
19 struct sockaddr_in address;
20 int len;
21 int res;
22 int port;
23 char ip[IPLEN];
24
25 void *thread_result;
26 pthread_t a_thread;
27
28 sockfd socket(AF_INET, SOCK_STREAM, 0);
29
30 if (arg ! 3){
31 printf(client --ipaddress --portnum\n);
32 exit(EXIT_FAILURE);
33 }
34
35 sscanf(argv[1], %s, ip);
36 sscanf(argv[2], %d, port); /*读取ip与端口*/
37
38 address.sin_family AF_INET;
39 address.sin_addr.s_addr inet_addr(ip);
40 address.sin_port htons(port);
41
42 len sizeof(address);
43 res connect(sockfd, (struct sockaddr *)address, len);
44 if (res -1){
45 perror(connect failed! );
46 exit(EXIT_FAILURE);
47 }
48 printf(connection success!\n);
49
50 res pthread_create(a_thread, NULL, thread_function, NULL); /*启动线程函数*/
51 if (res ! 0){
52 perror(Thread creation failed);
53 exit(EXIT_FAILURE);
54 }
55
56 while(read(sockfd, msg_recv, MSGLEN)){
57 printf(msg from server: %s\n, msg_recv);
58 }
59 res pthread_join(a_thread, thread_result);
60 if (res ! 0){
61 perror(joined failed);
62 exit(EXIT_FAILURE);
63 }
64 exit(EXIT_SUCCESS);
65 } 由于使用了线程所以要链接正确的线程库所以编译命令如下 gcc -D_REENTRANT -I/usr/include/nptl server.c -o server -L/usr/lib/nptl -lpthreadgcc -D_REENTRANT -I/usr/include/nptl client.c -o client -L/usr/lib/nptl -lpthread 如果你的系统默认使用的就是NPTL线程库那么编译时就无需加上-I和-L选项 运行时输入的命令规则是 ./server --portnum #即server后面要加上需要绑定的端口号。./client --ip --portnum #即client后面要加上服务器的IP地址以及端口号。 不积跬步无以至千里虽然这两个程序很简单但作为我的第一个linux环境下基于socket的通信程序也很有纪念意义。转载于:https://www.cnblogs.com/kevince/p/3891033.html
