当前位置: 技术问答>linux和unix
请问大虾们关于用socket进行linux下进程间通信问题
来源: 互联网 发布时间:2015-12-26
本文导语: 求采用socket进行linux进程间通信的例子, 重要用到哪些函数,调用的顺序是怎样的。 process1 main() { ... } process2 main() { ... } | int main(int argc, char ** argv) { int sockfd,new_fd; /* 监听socket: ...
求采用socket进行linux进程间通信的例子,
重要用到哪些函数,调用的顺序是怎样的。
process1
main()
{
...
}
process2
main()
{
...
}
重要用到哪些函数,调用的顺序是怎样的。
process1
main()
{
...
}
process2
main()
{
...
}
|
int main(int argc, char ** argv)
{
int sockfd,new_fd; /* 监听socket: sock_fd,数据传输socket: new_fd */
struct sockaddr_in my_addr; /* 本机地址信息 */
struct sockaddr_in their_addr; /* 客户地址信息 */
unsigned int sin_size, myport, lisnum;
if(argv[1]) myport = atoi(argv[1]);
else myport = 7838;
if(argv[2]) lisnum = atoi(argv[2]);
else lisnum = 2;
if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
perror("socket");
exit(1);
}
my_addr.sin_family=PF_INET;
my_addr.sin_port=htons(myport);
my_addr.sin_addr.s_addr = INADDR_ANY;
bzero(&(my_addr.sin_zero), 0);
if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1) {
perror("bind");
exit(1);
}
if (listen(sockfd, lisnum) == -1) {
perror("listen");
exit(1);
}
while(1) {
sin_size = sizeof(struct sockaddr_in);
if ((new_fd = accept(sockfd, (struct sockaddr *)&their_addr, &sin_size)) == -1) {
perror("accept");
continue;
}
printf("server: got connection from %sn",inet_ntoa(their_addr.sin_addr));
if (!fork()) { /* 子进程代码段 */
if (send(new_fd, "Hello, world!n", 14, 0) == -1) {
perror("send");
close(new_fd);
exit(0);
}
}
close(new_fd); /*父进程不再需要该socket*/
waitpid(-1,NULL,WNOHANG);/*等待子进程结束,清除子进程所占用资源*/
}
}
{
int sockfd,new_fd; /* 监听socket: sock_fd,数据传输socket: new_fd */
struct sockaddr_in my_addr; /* 本机地址信息 */
struct sockaddr_in their_addr; /* 客户地址信息 */
unsigned int sin_size, myport, lisnum;
if(argv[1]) myport = atoi(argv[1]);
else myport = 7838;
if(argv[2]) lisnum = atoi(argv[2]);
else lisnum = 2;
if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
perror("socket");
exit(1);
}
my_addr.sin_family=PF_INET;
my_addr.sin_port=htons(myport);
my_addr.sin_addr.s_addr = INADDR_ANY;
bzero(&(my_addr.sin_zero), 0);
if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1) {
perror("bind");
exit(1);
}
if (listen(sockfd, lisnum) == -1) {
perror("listen");
exit(1);
}
while(1) {
sin_size = sizeof(struct sockaddr_in);
if ((new_fd = accept(sockfd, (struct sockaddr *)&their_addr, &sin_size)) == -1) {
perror("accept");
continue;
}
printf("server: got connection from %sn",inet_ntoa(their_addr.sin_addr));
if (!fork()) { /* 子进程代码段 */
if (send(new_fd, "Hello, world!n", 14, 0) == -1) {
perror("send");
close(new_fd);
exit(0);
}
}
close(new_fd); /*父进程不再需要该socket*/
waitpid(-1,NULL,WNOHANG);/*等待子进程结束,清除子进程所占用资源*/
}
}