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| #include <arpa/inet.h>
#include <netinet/in.h>
#include <stdio.h>
#include <string.h>
#include <sys/epoll.h>
#include <sys/socket.h>
#include <unistd.h>
#include <thread>
int main() {
auto sfd = socket(AF_INET, SOCK_STREAM, 0);
if (sfd == -1) {
printf("socket error\n");
return 1;
}
sockaddr_in addr = {0};
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
addr.sin_port = htons(10000);
int err = bind(sfd, (sockaddr*)&addr, sizeof(sockaddr));
if (err < 0) {
printf("bind error\n");
return 1;
}
err = listen(sfd, 50);
if (err == -1) {
printf("listen error %d %s\n", errno, strerror(errno));
return 1;
}
auto efd = epoll_create(1);
std::thread task_print([efd]() {
epoll_event events[20];
char buffer[1000];
for (;;) {
auto fds = epoll_wait(efd, events, 20, -1);
if (fds == -1) {
printf("epoll_wait error %d %s\n", errno, strerror(errno));
continue;
}
for (auto i = 0; i < fds; i++) {
if (events[i].events & EPOLLRDHUP) {
epoll_ctl(efd, EPOLL_CTL_DEL, events[i].data.fd, &events[i]);
}
if (events[i].events & EPOLLIN) {
auto len = recv(events[i].data.fd, buffer, 3, 0);
buffer[len] = 0;
printf("read %s\n", buffer);
}
}
}
});
for (;;) {
int connfd;
sockaddr_in client_addr;
socklen_t client_addr_len = sizeof(client_addr);
if ((connfd = accept(sfd, (sockaddr*)&client_addr, &client_addr_len)) ==
-1) {
printf("error\n");
continue;
}
epoll_event evt;
evt.events = EPOLLIN | EPOLLRDHUP;
evt.data.fd = connfd;
err = epoll_ctl(efd, EPOLL_CTL_ADD, connfd, &evt);
if (err == -1) {
printf("epoll_ctl add error %d %s\n", errno, strerror(errno));
}
}
return 0;
}
|