79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include "ev.h"
|
|
|
|
#define RECV_BUFSIZE 8192
|
|
static char recvbuf[RECV_BUFSIZE];
|
|
|
|
void do_recv(struct ev_loop *loop, struct ev_io *io, int revents) {
|
|
int nread, nsend;
|
|
nread = recv(io->fd, recvbuf, RECV_BUFSIZE, 0);
|
|
if (nread <= 0) {
|
|
goto error;
|
|
}
|
|
nsend = send(io->fd, recvbuf, nread, 0);
|
|
if (nsend != nread) {
|
|
goto error;
|
|
}
|
|
return;
|
|
|
|
error:
|
|
ev_io_stop(loop, io);
|
|
close(io->fd);
|
|
free(io);
|
|
}
|
|
|
|
void do_accept(struct ev_loop *loop, struct ev_io *listenio, int revents) {
|
|
struct sockaddr_in peeraddr;
|
|
socklen_t addrlen = sizeof(peeraddr);
|
|
int connfd = accept(listenio->fd, (struct sockaddr*)&peeraddr, &addrlen);
|
|
if (connfd <= 0) {
|
|
return;
|
|
}
|
|
|
|
struct ev_io* io = (struct ev_io*)malloc(sizeof(struct ev_io));
|
|
ev_io_init(io, do_recv, connfd, EV_READ);
|
|
ev_io_start(loop, io);
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
if (argc < 2) {
|
|
printf("Usage: cmd port\n");
|
|
return -10;
|
|
}
|
|
int port = atoi(argv[1]);
|
|
|
|
struct sockaddr_in addr;
|
|
int addrlen = sizeof(addr);
|
|
memset(&addr, 0, addrlen);
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_port = htons(port);
|
|
int listenfd = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (listenfd < 0) {
|
|
return -20;
|
|
}
|
|
if (bind(listenfd, (struct sockaddr*)&addr, addrlen) < 0) {
|
|
return -30;
|
|
}
|
|
if (listen(listenfd, SOMAXCONN) < 0) {
|
|
return -40;
|
|
}
|
|
|
|
struct ev_loop* loop = ev_loop_new(0);
|
|
|
|
struct ev_io listenio;
|
|
ev_io_init(&listenio, do_accept, listenfd, EV_READ);
|
|
ev_io_start(loop, &listenio);
|
|
|
|
ev_run(loop, 0);
|
|
ev_loop_destroy(loop);
|
|
return 0;
|
|
}
|