1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*******************************************************************************************
*
* raylib [network] example - TCP Server
*
* This example has been created using raylib 3.0 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2019-2020 Jak Barnes (@syphonx) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#define RNET_IMPLEMENTATION
#include "rnet.h"
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [network] example - tcp server");
InitNetworkDevice(); // Init network communications
const char *pingmsg = "Ping!";
const char *pongmsg = "Pong!";
bool ping = false;
bool pong = false;
float elapsed = 0.0f;
float delay = 1.0f;
bool connected = false;
SocketConfig serverConfig = {
.host = "127.0.0.1",
.port = "4950",
.type = SOCKET_TCP,
.server = true,
.nonblocking = true
};
SocketConfig connectionConfig = { .nonblocking = true };
Socket *connection = NULL;
SocketSet *socketSet = NULL;
SocketResult *serverResult = NULL;
char receiveBuffer[512] = { 0 };
// Create the server: getaddrinfo + socket + setsockopt + bind + listen
serverResult = LoadSocketResult();
if (!SocketCreate(&serverConfig, serverResult))
{
TraceLog(LOG_WARNING, "Failed to open server: status %d, errno %d", serverResult->status, serverResult->socket->status);
}
else
{
if (!SocketBind(&serverConfig, serverResult))
{
TraceLog(LOG_WARNING, "Failed to bind server: status %d, errno %d", serverResult->status, serverResult->socket->status);
}
else
{
if (!(serverConfig.type == SOCKET_UDP))
{
if (!SocketListen(&serverConfig, serverResult)) TraceLog(LOG_WARNING, "Failed to start listen server: status %d, errno %d", serverResult->status, serverResult->socket->status);
}
}
}
// Create and add sockets to the socket set
socketSet = LoadSocketSet(2);
AddSocket(socketSet, serverResult->socket);
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
if (connected)
{
// Once connected to the network, check the sockets for pending information
// and when information is ready, send either a Ping or a Pong.
// CheckSockets, if any of the sockets in the socketSet are pending (received data, or requests)
// then mark the socket as being ready. You can check this with IsSocketReady(client_res->socket)
int active = CheckSockets(socketSet, 0);
if (active != 0) TraceLog(LOG_DEBUG, "There are currently %d socket(s) with data to be processed.", active);
// IsSocketReady, if the socket is ready, attempt to receive data from the socket
int bytesRecv = 0;
if (IsSocketReady(connection)) bytesRecv = SocketReceive(connection, receiveBuffer, (int)strlen(pingmsg) + 1);
// If we received data, was that data a "Ping!" or a "Pong!"
if (bytesRecv > 0)
{
if (strcmp(receiveBuffer, pingmsg) == 0) { pong = true; }
if (strcmp(receiveBuffer, pongmsg) == 0) { ping = true; }
}
// After each delay has expired, send a response "Ping!" for a "Pong!" and vice versa
elapsed += GetFrameTime();
if (elapsed > delay)
{
if (ping)
{
ping = false;
SocketSend(connection, pingmsg, (int)strlen(pingmsg) + 1);
}
else if (pong)
{
pong = false;
SocketSend(connection, pongmsg, (int)strlen(pingmsg) + 1);
}
elapsed = 0.0f;
}
}
else
{
// Attempt to connect to the network (Either TCP, or UDP)
int active = CheckSockets(socketSet, 0);
if (active != 0) TraceLog(LOG_DEBUG, "There are currently %d socket(s) with data to be processed.", active);
if (active > 0)
{
if ((connection = SocketAccept(serverResult->socket, &connectionConfig)) != NULL)
{
AddSocket(socketSet, connection);
connected = true;
ping = true;
}
}
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
// TODO: Draw relevant connection info
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
CloseNetworkDevice(); // Close network communication
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
|
