source: Daodan/MSVC/Flatline_Net.c@ 576

Last change on this file since 576 was 567, checked in by gumby, 14 years ago

Daodan MSVC
File size: 5.5 KB
Line 
1#include "Flatline.h"
2#include "Flatline_Server.h"
3
4
5#define TRACK_PACKETS
6
7/*thread */int UDPServer_Socket = 0;
8
9
10
11
12bool NetUDPServer_Listen(uint16_t port, bool (*packet_callback)(char* data, int datalen, int from))
13{
14 sockaddr_in address;
15 UDPServer_Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
16
17 if (UDPServer_Socket < 0)
18 {
19 DDrConsole_PrintF("could not create socket");
20 return false;
21 }
22
23
24 memset(&address, 0, sizeof(sockaddr_in));
25 address.sin_family = AF_INET;
26 address.sin_addr.s_addr = htonl(INADDR_ANY);
27 address.sin_port = htons(port);
28
29 if (bind(UDPServer_Socket, (sockaddr*)&address, sizeof(sockaddr_in)) < 0)
30 {
31 DDrConsole_PrintF("could not bind port %d", port);
32 closesocket(UDPServer_Socket);
33 return false;
34 }
35 else {
36
37
38 char data[65537] = {0};
39
40 sockaddr_in from;
41 int recvlen;
42 FLrServer_Initialize();
43 for (;;)
44 {
45 int fromlen = sizeof(sockaddr_in);
46 memset(&from, 0, sizeof(sockaddr_in));
47 recvlen = recvfrom(UDPServer_Socket, data, 65537 - 1, 0, (sockaddr*)&from, (void*)&fromlen);
48
49 if (!packet_callback(data, recvlen, ntohl(from.sin_addr.s_addr)))
50 break;
51 }
52 closesocket(UDPServer_Socket);
53 return true;
54 }
55}
56
57bool NetUDPServer_Send(sockaddr* address, flatline_packet* data, int datalen)
58{
59 //DDrConsole_PrintF("Sending data size %u to %s on socket %i", datalen, inet_ntoa( ((sockaddr_in*)address)->sin_addr ), UDPServer_Socket);
60 data->FLATLINE = *(int*)"FLATLINE";
61 return NetUDPSocket_Send(UDPServer_Socket, address, data, datalen);
62}
63
64int client_sock = 0;
65sockaddr_in client_address;
66
67int NetUDPSocket_Create(uint16_t port)
68{
69 int sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
70 sockaddr_in address;
71 unsigned long nonBlocking = 1;
72 if (sock < 0)
73 {
74 DDrConsole_PrintF("could not create socket");
75 return -1;
76 }
77
78
79 memset(&client_address, 0, sizeof(sockaddr_in));
80 address.sin_family = AF_INET;
81 address.sin_addr.s_addr = htonl(INADDR_ANY);
82 address.sin_port = htons(port);
83
84 if (bind(sock, (sockaddr*)&address, sizeof(sockaddr_in)) < 0)
85 {
86 DDrConsole_PrintF("could not bind port %d", port);
87 return false;
88 }
89
90
91 if (ioctlsocket(sock, FIONBIO, &nonBlocking))
92 {
93 DDrConsole_PrintF("failed to set non-blocking socket");
94 return false;
95 }
96 client_sock = sock;
97 client_address = address;
98 return sock;
99}
100
101int NetTCPSocket_Create(uint16_t port)
102{
103 int sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
104 sockaddr_in address;
105 unsigned long nonBlocking = 1;
106
107 if (sock < 0)
108 {
109 DDrConsole_PrintF("could not create socket");
110 return -1;
111 }
112
113
114 memset(&client_address, 0, sizeof(sockaddr_in));
115 address.sin_family = AF_INET;
116 address.sin_addr.s_addr = htonl(INADDR_ANY);
117 address.sin_port = htons(port);
118
119 if (bind(sock, (sockaddr*)&address, sizeof(sockaddr_in)) < 0)
120 {
121 DDrConsole_PrintF("could not bind port %d", port);
122 return false;
123 }
124
125
126 if (ioctlsocket(sock, FIONBIO, &nonBlocking))
127 {
128 DDrConsole_PrintF("failed to set non-blocking socket");
129 return false;
130 }
131 client_sock = sock;
132 client_address = address;
133 return sock;
134}
135
136
137void NetUDPSocket_Close(int socket)
138{
139 closesocket(socket);
140}
141
142int NetUDPSocket_Send(int socket, const sockaddr* address, flatline_packet* data, int datalen)
143{
144 //currently only protects against duplicate packets.
145 int addr_size;
146#ifdef TRACK_PACKETS
147 static uint32_t packet_index = 0;
148 packet_index = (packet_index + 1);
149 data->packet_index = packet_index;
150#endif
151 data->FLATLINE = *(int*)"FLATLINE";
152 switch (address->sa_family)
153 {
154 case AF_INET:
155 addr_size = sizeof(sockaddr_in);
156 break;
157 case AF_INET6:
158 addr_size = sizeof(sockaddr_in6);
159 break;
160 default:
161 addr_size = sizeof(sockaddr_storage);
162 }
163 return sendto(socket, data, datalen, 0, address, addr_size);
164}
165
166#ifdef TRACK_PACKETS
167uint32_t last_packet = -1;
168#endif
169
170bool NetUDPSocket_Recieve(int socket, sockaddr_storage* address, char* data, uint16_t* datalen)
171{
172 int address_size = sizeof(sockaddr_storage);
173 uint32_t msg_size = recvfrom(socket, data, 1400, 0, (SOCKADDR *)address, &address_size);
174 if (msg_size == 0)
175 return false;
176 else if (msg_size == SOCKET_ERROR) {
177 int errorno = WSAGetLastError();
178 if (errorno == WSAEWOULDBLOCK) return false; //no packets.
179 else {
180 //DDrConsole_PrintF("Packet type %i", ((flatline_packet*)data)->id);
181 NetCatchError();
182 return false;
183 }
184 }
185 /*
186#ifdef TRACK_PACKETS
187 if(client_connected && !server_started) {
188 uint32_t index_mkr = ((flatline_packet*)(data))->packet_index;
189 //fancy way of checking if index_mkr is on one side of the max size of an int and last_packet is on the other
190 if( ((index_mkr - last_packet < 0x80000000) && (index_mkr > last_packet))
191 //if it is, subtract half the size of an int from each. ^_^
192 || ((index_mkr - 0x80000000) > (last_packet - 0x80000000) ) )
193 {
194 return false;
195 }
196 else {
197 last_packet = index_mkr;
198 }
199 }
200
201#endif
202 */
203
204 *datalen = msg_size;
205 return true;
206
207}
208
209DWORD WINAPI StartServer(void* lol){
210 NetPlatform_Initalize();
211 FLrServer_Run();
212 return 0;
213}
214
215DWORD WINAPI StartClient(void* lol){
216 //NetPlatform_Initalize();
217 FLrClient_Run((flatline_packet*)lol);
218 return 0;
219}
220void NetCatchError(){
221 char Message[1024];
222 int errorno = WSAGetLastError();
223 if(errno == WSAEWOULDBLOCK) {
224 return;
225 }
226#ifdef WIN32
227
228 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS |
229 FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, errorno,
230 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
231 (LPSTR) Message, 1024, NULL);
232 DDrConsole_Print(Message);
233#endif
234
235}
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