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#include "packet_peer_udp_winsock.h"
#include <winsock2.h>
int PacketPeerUDPWinsock::get_available_packet_count() const {
Error err = const_cast<PacketPeerUDPWinsock*>(this)->poll();
if (err!=OK)
return 0;
return queue_count;
}
Error PacketPeerUDPWinsock::get_packet(const uint8_t **r_buffer,int &r_buffer_size) const{
Error err = const_cast<PacketPeerUDPWinsock*>(this)->poll();
if (err!=OK)
return err;
if (queue_count==0)
return ERR_UNAVAILABLE;
uint32_t size;
rb.read((uint8_t*)&size,4,true);
rb.read((uint8_t*)&packet_ip.host,4,true);
rb.read((uint8_t*)&packet_port,4,true);
rb.read(packet_buffer,size,true);
--queue_count;
*r_buffer=packet_buffer;
r_buffer_size=size;
return OK;
}
Error PacketPeerUDPWinsock::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, (const char*)p_buffer, p_buffer_size, 0, (struct sockaddr*)&addr, sizeof(addr))) != p_buffer_size) {
if (WSAGetLastError() != WSAEWOULDBLOCK) {
return FAILED;
};
}
return OK;
}
int PacketPeerUDPWinsock::get_max_packet_size() const{
return 512; // uhm maybe not
}
Error PacketPeerUDPWinsock::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\n", p_port);
rb.resize(nearest_power_of_2(p_recv_buffer_size));
return OK;
}
void PacketPeerUDPWinsock::close(){
if (sockfd != -1)
::closesocket(sockfd);
sockfd=-1;
rb.resize(8);
queue_count=0;
}
Error PacketPeerUDPWinsock::poll() {
struct sockaddr_in from = {0};
int len = sizeof(struct sockaddr_in);
int ret;
while ( (ret = recvfrom(sockfd, (char*)recv_buffer, MIN(sizeof(recv_buffer),rb.data_left()-12), 0, (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 == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) ) {
close();
return FAILED;
};
return OK;
}
bool PacketPeerUDPWinsock::is_listening() const{
return sockfd!=-1;
}
IP_Address PacketPeerUDPWinsock::get_packet_address() const {
return packet_ip;
}
int PacketPeerUDPWinsock::get_packet_port() const{
return packet_port;
}
int PacketPeerUDPWinsock::_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 PacketPeerUDPWinsock::set_send_address(const IP_Address& p_address,int p_port) {
peer_addr=p_address;
peer_port=p_port;
}
void PacketPeerUDPWinsock::make_default() {
PacketPeerUDP::_create = PacketPeerUDPWinsock::_create;
};
PacketPeerUDP* PacketPeerUDPWinsock::_create() {
return memnew(PacketPeerUDPWinsock);
};
PacketPeerUDPWinsock::PacketPeerUDPWinsock() {
sockfd=-1;
packet_port=0;
queue_count=0;
peer_port=0;
}
PacketPeerUDPWinsock::~PacketPeerUDPWinsock() {
close();
}
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