-=-=-=-=- Curse the day I decided to port UDP code, as it ended up being two nights of work. At least It's done now (I hope). -Fixed UDP Support, API seems stable -Added UDP Chat demo (chat that can lose your packets, heh) -Added helpers to areas and bodies to get list of collided bodies and contained bodies. -Sped up screen/viewport capture code. -Added code to save an image as PNG -Small fix so scripts register their singletons after modules did.
201 lines
3.9 KiB
C++
201 lines
3.9 KiB
C++
#include "packet_peer_udp_winsock.h"
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#include <winsock2.h>
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int PacketPeerUDPWinsock::get_available_packet_count() const {
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Error err = const_cast<PacketPeerUDPWinsock*>(this)->_poll(false);
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if (err!=OK)
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return 0;
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return queue_count;
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}
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Error PacketPeerUDPWinsock::get_packet(const uint8_t **r_buffer,int &r_buffer_size) const{
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Error err = const_cast<PacketPeerUDPWinsock*>(this)->_poll(false);
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if (err!=OK)
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return err;
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if (queue_count==0)
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return ERR_UNAVAILABLE;
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uint32_t size;
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rb.read((uint8_t*)&packet_ip.host,4,true);
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rb.read((uint8_t*)&packet_port,4,true);
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rb.read((uint8_t*)&size,4,true);
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rb.read(packet_buffer,size,true);
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--queue_count;
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*r_buffer=packet_buffer;
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r_buffer_size=size;
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return OK;
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}
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Error PacketPeerUDPWinsock::put_packet(const uint8_t *p_buffer,int p_buffer_size){
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int sock = _get_socket();
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ERR_FAIL_COND_V( sock == -1, FAILED );
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struct sockaddr_in addr;
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addr.sin_family = AF_INET;
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addr.sin_port = htons(peer_port);
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addr.sin_addr = *((struct in_addr*)&peer_addr.host);
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_set_blocking(true);
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errno = 0;
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int err;
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while ( (err = sendto(sock, (const char*)p_buffer, p_buffer_size, 0, (struct sockaddr*)&addr, sizeof(addr))) != p_buffer_size) {
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if (WSAGetLastError() != WSAEWOULDBLOCK) {
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return FAILED;
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};
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}
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return OK;
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}
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int PacketPeerUDPWinsock::get_max_packet_size() const{
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return 512; // uhm maybe not
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}
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void PacketPeerUDPWinsock::_set_blocking(bool p_blocking) {
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if (blocking==p_blocking)
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return;
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blocking=p_blocking;
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unsigned long par = blocking?0:1;
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if (ioctlsocket(sockfd, FIONBIO, &par)) {
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perror("setting non-block mode");
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//close();
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//return -1;
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};
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}
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Error PacketPeerUDPWinsock::listen(int p_port, int p_recv_buffer_size){
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close();
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int sock = _get_socket();
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if (sock == -1 )
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return ERR_CANT_CREATE;
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sockaddr_in addr = {0};
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addr.sin_family = AF_INET;
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addr.sin_port = htons(p_port);
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addr.sin_addr.s_addr = INADDR_ANY;
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if (bind(sock, (struct sockaddr*)&addr, sizeof(sockaddr_in)) == -1 ) {
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close();
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return ERR_UNAVAILABLE;
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}
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blocking=true;
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printf("UDP Connection listening on port %i\n", p_port);
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rb.resize(nearest_shift(p_recv_buffer_size));
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return OK;
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}
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void PacketPeerUDPWinsock::close(){
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if (sockfd != -1)
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::closesocket(sockfd);
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sockfd=-1;
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rb.resize(8);
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queue_count=0;
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}
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Error PacketPeerUDPWinsock::wait() {
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return _poll(true);
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}
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Error PacketPeerUDPWinsock::_poll(bool p_wait) {
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_set_blocking(p_wait);
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struct sockaddr_in from = {0};
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int len = sizeof(struct sockaddr_in);
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int ret;
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while ( (ret = recvfrom(sockfd, (char*)recv_buffer, MIN(sizeof(recv_buffer),rb.data_left()-12), 0, (struct sockaddr*)&from, &len)) > 0) {
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rb.write((uint8_t*)&from.sin_addr, 4);
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uint32_t port = ntohs(from.sin_port);
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rb.write((uint8_t*)&port, 4);
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rb.write((uint8_t*)&ret, 4);
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rb.write(recv_buffer, ret);
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len = sizeof(struct sockaddr_in);
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++queue_count;
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};
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if (ret == 0 || (ret == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) ) {
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close();
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return FAILED;
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};
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return OK;
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}
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bool PacketPeerUDPWinsock::is_listening() const{
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return sockfd!=-1;
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}
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IP_Address PacketPeerUDPWinsock::get_packet_address() const {
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return packet_ip;
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}
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int PacketPeerUDPWinsock::get_packet_port() const{
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return packet_port;
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}
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int PacketPeerUDPWinsock::_get_socket() {
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if (sockfd != -1)
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return sockfd;
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sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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ERR_FAIL_COND_V( sockfd == -1, -1 );
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//fcntl(sockfd, F_SETFL, O_NONBLOCK);
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return sockfd;
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}
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void PacketPeerUDPWinsock::set_send_address(const IP_Address& p_address,int p_port) {
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peer_addr=p_address;
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peer_port=p_port;
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}
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void PacketPeerUDPWinsock::make_default() {
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PacketPeerUDP::_create = PacketPeerUDPWinsock::_create;
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};
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PacketPeerUDP* PacketPeerUDPWinsock::_create() {
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return memnew(PacketPeerUDPWinsock);
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};
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PacketPeerUDPWinsock::PacketPeerUDPWinsock() {
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sockfd=-1;
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packet_port=0;
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queue_count=0;
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peer_port=0;
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}
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PacketPeerUDPWinsock::~PacketPeerUDPWinsock() {
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close();
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}
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