void
udp_server(lthread_t *lt, void *args)
{
struct sockaddr_in listener;
struct sockaddr_in client;
socklen_t listener_len = sizeof(listener);
int s;
int ret;
char buf[64];
lthread_detach();
if ((s=lthread_socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1) {
perror("error");
return;
}
memset((char *) &listener, 0, sizeof(listener));
listener.sin_family = AF_INET;
listener.sin_port = htons(5556);
listener.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, (struct sockaddr *)&listener, sizeof(listener)) == -1) {
perror("Cannot bind");
return;
}
while (1) {
ret = lthread_recvfrom(s, buf, 64, 0, (struct sockaddr *)&client, &listener_len, 1000);
printf("ret returned %d: %s\n", ret, buf);
}
close(s);
}
static int create_listener(char *ip, short port)
{
int fd = 0, ret = 0;
int opt;
struct sockaddr_in sin;
fd = lthread_socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (-1 == fd) {
return -1;
}
opt = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt,sizeof(int)) == -1) {
perror("failed to set SOREUSEADDR on socket");
}
memset(&sin, 0, sizeof(sin));
sin.sin_family = PF_INET;
sin.sin_addr.s_addr = INADDR_ANY;
/*if(!inet_pton(AF_INET, ip, &sin.sin_addr)) {
perror("parse ip error");
return -1;
}*/
sin.sin_port = htons(port);
ret = bind(fd, (struct sockaddr *)&sin, sizeof(sin));
if (-1 == ret) {
close(fd);
perror("cannot bind socket. closing.\n");
return -1;
}
ret = listen(fd, 1024);
if (-1 == ret) {
close(fd);
perror("cannot listen on socket. closing.\n");
return -2;
}
return fd;
}
bool TcpServer::listen(int port)
{
// create listening socket
fd = lthread_socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if(fd == -1)
return false;
int opt = 1;
if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(int)) == -1)
perror("failed to set SOREUSEADDR on socket");
sockaddr_in sin;
sin.sin_family = PF_INET;
sin.sin_addr.s_addr = INADDR_ANY;
sin.sin_port = htons(port);
// bind to the listening port
int ret = bind(fd, (struct sockaddr *)&sin, sizeof(sin));
if(ret == -1)
return false;
::listen(fd, 128);
return true;
}
