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#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <strings.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/epoll.h>
#include <errno.h>
#include "eventloop.h"
#include "tsocket.h"
#include "util.h"
#define READ_BUFFER_SIZE 1024
void handleEvent(struct tsocket *sock)
{
char buf[READ_BUFFER_SIZE];
ssize_t n_read_bytes;
for (;;) {
n_read_bytes = read(sock->fd, buf, sizeof(buf));
if (n_read_bytes > 0) {
printf("message from conn %d: %s\n", sock->fd, buf);
write(sock->fd, buf, sizeof(buf));
} else if (n_read_bytes == 0) {
printf("conn %d disconnected\n", sock->fd);
tsocketDelete(sock);
break;
} else if (n_read_bytes == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK)
break;
}
}
}
int main()
{
struct tsocket *sock = tsocketNew();
if (sock == NULL)
panic("socket creation error");
if (tsocketBind(sock, "127.0.0.1", 8888) == -1)
panic("socket bind error");
if (tsocketListen(sock) == -1)
panic("socket listen error");
struct eventLoop *el = eventLoopNew();
if (el == NULL)
panic("eventloop creation");
if (eventLoopAddSocket(el, sock, EPOLLIN) == -1)
panic("eventloop add fd");
int nfds;
struct tsocket *conn_sock;
for (;;) {
nfds = eventLoopWait(el, -1);
if (nfds == -1)
panic("eventloop wait");
for (int i = 0; i < nfds; i++) {
if (eventLoopGetSocket(el, i) == sock) {
conn_sock = tsocketAccept(sock);
if (conn_sock == NULL)
panic("socket accept error");
if (setblocking(conn_sock->fd, false) == -1) {
tsocketDelete(conn_sock);
continue;
}
if (eventLoopAddSocket(el, conn_sock, EPOLLIN | EPOLLET) == -1)
panic("eventloop add fd: conn_sockfd");
printf("New client fd %d, ip: %s, port: %d\n",
conn_sock->fd, conn_sock->addr, conn_sock->port);
} else {
handleEvent(eventLoopGetSocket(el, i));
}
}
}
}
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