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
|
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: simple TCP socket API for communicating as a TCP client over a TEXT
// connection
//
// $Workfile: $
// $Date: $
//
//-----------------------------------------------------------------------------
// $Log: $
//
// $NoKeywords: $
//=============================================================================//
#include <winsock.h>
#include "simplesocket.h"
static REPORTFUNCTION g_SocketReport = NULL;
//-----------------------------------------------------------------------------
// Purpose: intialize sockets
//-----------------------------------------------------------------------------
void SocketInit( void )
{
WSADATA wsData;
WORD wVersionRequested = MAKEWORD(1, 1);
WSAStartup(wVersionRequested, &wsData);
}
//-----------------------------------------------------------------------------
// Purpose: cleanup all socket resources
//-----------------------------------------------------------------------------
void SocketExit( void )
{
WSACleanup();
}
//-----------------------------------------------------------------------------
// Purpose: sets up a reporting function
// Input : *pReportFunction -
//-----------------------------------------------------------------------------
void SocketReport( REPORTFUNCTION pReportFunction )
{
g_SocketReport = pReportFunction;
}
//-----------------------------------------------------------------------------
// Purpose: Open a TCP socket & connect to a given server
// Input : *pServerName - server name (text or ip)
// port - port number of the server
// Output : HSOCKET
//-----------------------------------------------------------------------------
HSOCKET SocketOpen( const char *pServerName, int port )
{
SOCKADDR_IN sockAddr;
SOCKET s;
memset(&sockAddr,0,sizeof(sockAddr));
s = socket( AF_INET, SOCK_STREAM, 0 );
sockAddr.sin_family = AF_INET;
sockAddr.sin_addr.s_addr = inet_addr(pServerName);
if (sockAddr.sin_addr.s_addr == INADDR_NONE)
{
LPHOSTENT lphost;
lphost = gethostbyname(pServerName);
if (lphost != NULL)
{
sockAddr.sin_addr.s_addr = ((LPIN_ADDR)lphost->h_addr)->s_addr;
}
else
{
WSASetLastError(WSAEINVAL);
return FALSE;
}
}
sockAddr.sin_port = htons((u_short)port);
if ( connect( s, (SOCKADDR *)&sockAddr, sizeof(sockAddr) ) == SOCKET_ERROR )
{
// printf("Socket error:%d\n", WSAGetLastError()) ;
return NULL;
}
return (HSOCKET)s;
}
//-----------------------------------------------------------------------------
// Purpose: close the socket opened with SocketOpen()
// Input : socket -
//-----------------------------------------------------------------------------
void SocketClose( HSOCKET socket )
{
SOCKET s = (SOCKET)socket;
closesocket( s );
}
//-----------------------------------------------------------------------------
// Purpose: Write a string to the socket. String is NULL terminated on input,
// but terminator is NOT written to the socket
// Input : socket -
// *pString - string to write
//-----------------------------------------------------------------------------
void SocketSendString( HSOCKET socket, const char *pString )
{
if ( !pString )
return;
int len = (int)strlen( pString );
if ( !len )
return;
if ( send( (SOCKET)socket, pString, len, 0 ) != SOCKET_ERROR )
{
if ( g_SocketReport )
{
g_SocketReport( socket, pString );
}
}
else
{
// printf("Send failed\n");
}
}
//-----------------------------------------------------------------------------
// Purpose: receive input from a socket until a certain string is received
// ASSUME: socket data is all text
// Input : socket -
// *pString - string to match, if NULL, just poll the socket once
//-----------------------------------------------------------------------------
void SocketWait( HSOCKET socket, const char *pString )
{
char buf[1024];
bool done = false;
while ( !done )
{
int len = recv( (SOCKET)socket, buf, sizeof(buf)-1, 0 );
buf[len] = 0;
if ( g_SocketReport )
{
g_SocketReport( socket, buf );
}
if ( !pString || strstr( buf, pString ) )
return;
}
}
|