mirror of
https://github.com/godotengine/godot.git
synced 2024-12-03 09:52:18 +08:00
199 lines
3.8 KiB
C++
199 lines
3.8 KiB
C++
#include "packet_peer_udp_posix.h"
|
|
|
|
#ifdef UNIX_ENABLED
|
|
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <netdb.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <stdio.h>
|
|
|
|
#ifndef NO_FCNTL
|
|
#ifdef __HAIKU__
|
|
#include <fcntl.h>
|
|
#else
|
|
#include <sys/fcntl.h>
|
|
#endif
|
|
#else
|
|
#include <sys/ioctl.h>
|
|
#endif
|
|
|
|
#ifdef JAVASCRIPT_ENABLED
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
|
|
|
|
int PacketPeerUDPPosix::get_available_packet_count() const {
|
|
|
|
Error err = const_cast<PacketPeerUDPPosix*>(this)->_poll(false);
|
|
if (err!=OK)
|
|
return 0;
|
|
|
|
return queue_count;
|
|
}
|
|
|
|
Error PacketPeerUDPPosix::get_packet(const uint8_t **r_buffer,int &r_buffer_size) const{
|
|
|
|
Error err = const_cast<PacketPeerUDPPosix*>(this)->_poll(false);
|
|
if (err!=OK)
|
|
return err;
|
|
if (queue_count==0)
|
|
return ERR_UNAVAILABLE;
|
|
|
|
uint32_t size;
|
|
rb.read((uint8_t*)&packet_ip.host,4,true);
|
|
rb.read((uint8_t*)&packet_port,4,true);
|
|
rb.read((uint8_t*)&size,4,true);
|
|
rb.read(packet_buffer,size,true);
|
|
--queue_count;
|
|
*r_buffer=packet_buffer;
|
|
r_buffer_size=size;
|
|
return OK;
|
|
|
|
}
|
|
Error PacketPeerUDPPosix::put_packet(const uint8_t *p_buffer,int p_buffer_size){
|
|
|
|
int sock = _get_socket();
|
|
ERR_FAIL_COND_V( sock == -1, FAILED );
|
|
struct sockaddr_in addr;
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_port = htons(peer_port);
|
|
addr.sin_addr = *((struct in_addr*)&peer_addr.host);
|
|
|
|
errno = 0;
|
|
int err;
|
|
|
|
while ( (err = sendto(sock, p_buffer, p_buffer_size, 0, (struct sockaddr*)&addr, sizeof(addr))) != p_buffer_size) {
|
|
|
|
if (errno != EAGAIN) {
|
|
return FAILED;
|
|
}
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
int PacketPeerUDPPosix::get_max_packet_size() const{
|
|
|
|
return 512; // uhm maybe not
|
|
}
|
|
|
|
Error PacketPeerUDPPosix::listen(int p_port, int p_recv_buffer_size){
|
|
|
|
close();
|
|
int sock = _get_socket();
|
|
if (sock == -1 )
|
|
return ERR_CANT_CREATE;
|
|
sockaddr_in addr = {0};
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_port = htons(p_port);
|
|
addr.sin_addr.s_addr = INADDR_ANY;
|
|
if (bind(sock, (struct sockaddr*)&addr, sizeof(sockaddr_in)) == -1 ) {
|
|
close();
|
|
return ERR_UNAVAILABLE;
|
|
}
|
|
printf("UDP Connection listening on port %i bufsize %i \n", p_port,p_recv_buffer_size);
|
|
rb.resize(nearest_shift(p_recv_buffer_size));
|
|
return OK;
|
|
}
|
|
|
|
void PacketPeerUDPPosix::close(){
|
|
|
|
if (sockfd != -1)
|
|
::close(sockfd);
|
|
sockfd=-1;
|
|
rb.resize(8);
|
|
queue_count=0;
|
|
}
|
|
|
|
|
|
Error PacketPeerUDPPosix::wait() {
|
|
|
|
return _poll(true);
|
|
}
|
|
|
|
Error PacketPeerUDPPosix::_poll(bool p_wait) {
|
|
|
|
struct sockaddr_in from = {0};
|
|
socklen_t len = sizeof(struct sockaddr_in);
|
|
int ret;
|
|
while ( (ret = recvfrom(sockfd, recv_buffer, MIN(sizeof(recv_buffer),rb.data_left()-12), p_wait?0:MSG_DONTWAIT, (struct sockaddr*)&from, &len)) > 0) {
|
|
rb.write((uint8_t*)&from.sin_addr, 4);
|
|
uint32_t port = ntohs(from.sin_port);
|
|
rb.write((uint8_t*)&port, 4);
|
|
rb.write((uint8_t*)&ret, 4);
|
|
rb.write(recv_buffer, ret);
|
|
len = sizeof(struct sockaddr_in);
|
|
++queue_count;
|
|
};
|
|
|
|
if (ret == 0 || (ret == -1 && errno != EAGAIN) ) {
|
|
close();
|
|
return FAILED;
|
|
};
|
|
|
|
return OK;
|
|
}
|
|
bool PacketPeerUDPPosix::is_listening() const{
|
|
|
|
return sockfd!=-1;
|
|
}
|
|
|
|
IP_Address PacketPeerUDPPosix::get_packet_address() const {
|
|
|
|
return packet_ip;
|
|
}
|
|
|
|
int PacketPeerUDPPosix::get_packet_port() const{
|
|
|
|
return packet_port;
|
|
}
|
|
|
|
int PacketPeerUDPPosix::_get_socket() {
|
|
|
|
if (sockfd != -1)
|
|
return sockfd;
|
|
|
|
sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
|
ERR_FAIL_COND_V( sockfd == -1, -1 );
|
|
//fcntl(sockfd, F_SETFL, O_NONBLOCK);
|
|
|
|
return sockfd;
|
|
}
|
|
|
|
|
|
void PacketPeerUDPPosix::set_send_address(const IP_Address& p_address,int p_port) {
|
|
|
|
peer_addr=p_address;
|
|
peer_port=p_port;
|
|
}
|
|
|
|
PacketPeerUDP* PacketPeerUDPPosix::_create() {
|
|
|
|
return memnew(PacketPeerUDPPosix);
|
|
};
|
|
|
|
void PacketPeerUDPPosix::make_default() {
|
|
|
|
PacketPeerUDP::_create = PacketPeerUDPPosix::_create;
|
|
};
|
|
|
|
|
|
PacketPeerUDPPosix::PacketPeerUDPPosix() {
|
|
|
|
sockfd=-1;
|
|
packet_port=0;
|
|
queue_count=0;
|
|
peer_port=0;
|
|
}
|
|
|
|
PacketPeerUDPPosix::~PacketPeerUDPPosix() {
|
|
|
|
close();
|
|
}
|
|
#endif
|