| 1 |
#include "Flatline.h" |
| 2 |
|
| 3 |
thread int UDPServer_Socket = 0; |
| 4 |
|
| 5 |
bool NetUDPServer_Listen(uint16_t port, bool (*packet_callback)(char* data, int datalen, int from)) |
| 6 |
{ |
| 7 |
UDPServer_Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
| 8 |
|
| 9 |
if (UDPServer_Socket < 0) |
| 10 |
{ |
| 11 |
DDrStartupMessage("could not create socket"); |
| 12 |
return false; |
| 13 |
} |
| 14 |
|
| 15 |
sockaddr_in address; |
| 16 |
memset(&address, 0, sizeof(sockaddr_in)); |
| 17 |
address.sin_family = AF_INET; |
| 18 |
address.sin_addr.s_addr = htonl(INADDR_ANY); |
| 19 |
address.sin_port = htons(port); |
| 20 |
|
| 21 |
if (bind(UDPServer_Socket, (sockaddr*)&address, sizeof(sockaddr_in)) < 0) |
| 22 |
{ |
| 23 |
DDrStartupMessage("could not bind port %d", port); |
| 24 |
closesocket(UDPServer_Socket); |
| 25 |
return false; |
| 26 |
} |
| 27 |
|
| 28 |
char data[65537]; |
| 29 |
data[sizeof(data) - 1] = '\0'; |
| 30 |
sockaddr_in from; |
| 31 |
int recvlen; |
| 32 |
for (;;) |
| 33 |
{ |
| 34 |
int fromlen = sizeof(sockaddr_in); |
| 35 |
memset(&from, 0, sizeof(sockaddr_in)); |
| 36 |
recvlen = recvfrom(UDPServer_Socket, data, sizeof(data) - 1, 0, (sockaddr*)&from, (void*)&fromlen); |
| 37 |
if (!packet_callback(data, recvlen, ntohl(from.sin_addr.s_addr))) |
| 38 |
break; |
| 39 |
} |
| 40 |
closesocket(UDPServer_Socket); |
| 41 |
return true; |
| 42 |
} |
| 43 |
|
| 44 |
bool NetUDPServer_Send(sockaddr* address, char* data, int datalen) |
| 45 |
{ |
| 46 |
return NetUDPSocket_Send(UDPServer_Socket, address, data, datalen); |
| 47 |
} |
| 48 |
|
| 49 |
int NetUDPSocket_Create(uint16_t port) |
| 50 |
{ |
| 51 |
int sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
| 52 |
|
| 53 |
if (sock < 0) |
| 54 |
{ |
| 55 |
DDrStartupMessage("could not create socket"); |
| 56 |
return -1; |
| 57 |
} |
| 58 |
|
| 59 |
sockaddr_in address; |
| 60 |
memset(&address, 0, sizeof(sockaddr_in)); |
| 61 |
address.sin_family = AF_INET; |
| 62 |
address.sin_addr.s_addr = htonl(INADDR_ANY); |
| 63 |
address.sin_port = htons(port); |
| 64 |
|
| 65 |
if (bind(sock, (sockaddr*)&address, sizeof(sockaddr_in)) < 0) |
| 66 |
{ |
| 67 |
DDrStartupMessage("could not bind port %d", port); |
| 68 |
return false; |
| 69 |
} |
| 70 |
|
| 71 |
unsigned long nonBlocking = 1; |
| 72 |
if (ioctlsocket(sock, FIONBIO, &nonBlocking)) |
| 73 |
{ |
| 74 |
DDrStartupMessage("failed to set non-blocking socket"); |
| 75 |
return false; |
| 76 |
} |
| 77 |
|
| 78 |
return sock; |
| 79 |
} |
| 80 |
|
| 81 |
void NetUDPSocket_Close(int socket) |
| 82 |
{ |
| 83 |
closesocket(socket); |
| 84 |
} |
| 85 |
|
| 86 |
bool NetUDPSocket_Send(int socket, sockaddr* address, char* data, int datalen) |
| 87 |
{ |
| 88 |
uint32_t addr_size; |
| 89 |
switch (address->sa_family) |
| 90 |
{ |
| 91 |
case AF_INET: |
| 92 |
addr_size = sizeof(sockaddr_in); |
| 93 |
break; |
| 94 |
case AF_INET6: |
| 95 |
addr_size = sizeof(sockaddr_in6); |
| 96 |
break; |
| 97 |
} |
| 98 |
return sendto(socket, data, datalen, 0, address, addr_size); |
| 99 |
} |
| 100 |
|
| 101 |
bool NetUDPSocket_Recieve(int socket, sockaddr_storage* address, char* data, uint16_t* datalen) |
| 102 |
{ |
| 103 |
uint32_t msg_size = recvfrom(socket, data, 512, 0, address, sizeof(sockaddr_storage)); |
| 104 |
if (msg_size == 0) |
| 105 |
return false; |
| 106 |
else |
| 107 |
{ |
| 108 |
*datalen = msg_size; |
| 109 |
return true; |
| 110 |
} |
| 111 |
} |
