project_files/frontlib/socket.c
author unc0rr
Wed, 19 Mar 2014 18:45:20 +0400
changeset 10206 979a663d7351
parent 10017 de822cd3df3a
permissions -rw-r--r--
Process segments from last to first point too
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
10017
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     1
/*
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     2
 * Hedgewars, a free turn based strategy game
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     3
 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     4
 *
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     5
 * This program is free software; you can redistribute it and/or
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     6
 * modify it under the terms of the GNU General Public License
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     7
 * as published by the Free Software Foundation; either version 2
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     8
 * of the License, or (at your option) any later version.
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
     9
 *
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    10
 * This program is distributed in the hope that it will be useful,
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    13
 * GNU General Public License for more details.
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    14
 *
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    15
 * You should have received a copy of the GNU General Public License
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    16
 * along with this program; if not, write to the Free Software
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    17
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    18
 */
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    19
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    20
#include "socket.h"
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    21
#include "util/logging.h"
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    22
#include "util/util.h"
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    23
#include <stdlib.h>
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    24
#include <SDL_net.h>
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    25
#include <time.h>
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    26
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    27
struct _flib_tcpsocket {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    28
    TCPsocket sock;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    29
    SDLNet_SocketSet sockset;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    30
};
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    31
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    32
struct _flib_acceptor {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    33
    TCPsocket sock;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    34
    uint16_t port;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    35
};
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    36
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    37
static uint32_t getPeerIp(TCPsocket sock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    38
    IPaddress *addr = SDLNet_TCP_GetPeerAddress(sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    39
    return SDLNet_Read32(&addr->host);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    40
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    41
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    42
static bool connectionIsLocal(TCPsocket sock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    43
    return getPeerIp(sock) == (uint32_t)((127UL<<24)+1); // 127.0.0.1
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    44
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    45
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    46
static flib_tcpsocket *createSocket(TCPsocket sdlsock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    47
    flib_tcpsocket *result = flib_calloc(1, sizeof(flib_tcpsocket));
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    48
    if(result) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    49
        result->sock = sdlsock;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    50
        result->sockset = SDLNet_AllocSocketSet(1);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    51
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    52
        if(!result->sockset) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    53
            flib_log_e("Can't allocate socket: Out of memory!");
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    54
            SDLNet_FreeSocketSet(result->sockset);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    55
            free(result);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    56
            result = NULL;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    57
        } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    58
            SDLNet_AddSocket(result->sockset, (SDLNet_GenericSocket)result->sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    59
        }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    60
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    61
    return result;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    62
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    63
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    64
TCPsocket listen(uint16_t port) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    65
    IPaddress addr;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    66
    addr.host = INADDR_ANY;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    67
    SDLNet_Write16(port, &addr.port);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    68
    TCPsocket sock = SDLNet_TCP_Open(&addr);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    69
    if(!sock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    70
        flib_log_w("Unable to listen on port %u: %s", (unsigned)port, SDLNet_GetError());
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    71
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    72
    return sock;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    73
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    74
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    75
flib_acceptor *flib_acceptor_create(uint16_t port) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    76
    flib_acceptor *result = flib_calloc(1, sizeof(flib_acceptor));
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    77
    if(result) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    78
        if(port > 0) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    79
            result->port = port;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    80
            result->sock = listen(result->port);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    81
        } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    82
            /* SDL_net does not seem to have a way to listen on a random unused port
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    83
               and find out which port that is, so let's try to find one ourselves. */
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    84
            srand(time(NULL));
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    85
            for(int i=0; !result->sock && i<1000; i++) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    86
                // IANA suggests using ports in the range 49152-65535 for things like this
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    87
                result->port = 49152+(rand()%(65536-49152));
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    88
                result->sock = listen(result->port);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    89
            }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    90
        }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    91
        if(!result->sock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    92
            flib_log_e("Failed to create acceptor.");
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    93
            free(result);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    94
            result = NULL;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    95
        }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    96
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    97
    return result;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    98
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
    99
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   100
uint16_t flib_acceptor_listenport(flib_acceptor *acceptor) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   101
    if(!acceptor) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   102
        flib_log_e("Call to flib_acceptor_listenport with acceptor==null");
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   103
        return 0;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   104
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   105
    return acceptor->port;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   106
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   107
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   108
void flib_acceptor_close(flib_acceptor *acceptor) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   109
    if(acceptor) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   110
        SDLNet_TCP_Close(acceptor->sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   111
        free(acceptor);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   112
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   113
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   114
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   115
flib_tcpsocket *flib_socket_accept(flib_acceptor *acceptor, bool localOnly) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   116
    flib_tcpsocket *result = NULL;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   117
    if(!acceptor) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   118
        flib_log_e("Call to flib_socket_accept with acceptor==null");
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   119
    } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   120
        TCPsocket sock = NULL;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   121
        while(!result && (sock = SDLNet_TCP_Accept(acceptor->sock))) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   122
            if(localOnly && !connectionIsLocal(sock)) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   123
                flib_log_i("Rejected nonlocal connection attempt from %s", flib_format_ip(getPeerIp(sock)));
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   124
            } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   125
                result = createSocket(sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   126
            }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   127
            if(!result) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   128
                SDLNet_TCP_Close(sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   129
            }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   130
        }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   131
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   132
    return result;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   133
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   134
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   135
flib_tcpsocket *flib_socket_connect(const char *host, uint16_t port) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   136
    flib_tcpsocket *result = NULL;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   137
    if(!host || port==0) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   138
        flib_log_e("Invalid parameter in flib_socket_connect");
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   139
    } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   140
        IPaddress ip;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   141
        if(SDLNet_ResolveHost(&ip,host,port)==-1) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   142
           flib_log_e("SDLNet_ResolveHost: %s\n", SDLNet_GetError());
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   143
        } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   144
            TCPsocket sock=SDLNet_TCP_Open(&ip);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   145
            if(!sock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   146
                flib_log_e("SDLNet_TCP_Open: %s\n", SDLNet_GetError());
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   147
            } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   148
                result = createSocket(sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   149
                if(result) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   150
                    sock = NULL;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   151
                }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   152
            }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   153
            SDLNet_TCP_Close(sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   154
        }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   155
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   156
    return result;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   157
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   158
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   159
void flib_socket_close(flib_tcpsocket *sock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   160
    if(sock) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   161
        SDLNet_DelSocket(sock->sockset, (SDLNet_GenericSocket)sock->sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   162
        SDLNet_TCP_Close(sock->sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   163
        SDLNet_FreeSocketSet(sock->sockset);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   164
        free(sock);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   165
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   166
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   167
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   168
int flib_socket_nbrecv(flib_tcpsocket *sock, void *data, int maxlen) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   169
    if(!sock || (maxlen>0 && !data)) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   170
        flib_log_e("Call to flib_socket_nbrecv with sock==null or data==null");
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   171
        return -1;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   172
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   173
    int readySockets = SDLNet_CheckSockets(sock->sockset, 0);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   174
    if(readySockets>0) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   175
        int size = SDLNet_TCP_Recv(sock->sock, data, maxlen);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   176
        return size>0 ? size : -1;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   177
    } else if(readySockets==0) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   178
        return 0;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   179
    } else {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   180
        flib_log_e("Error in select system call: %s", SDLNet_GetError());
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   181
        return -1;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   182
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   183
}
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   184
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   185
int flib_socket_send(flib_tcpsocket *sock, const void *data, int len) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   186
    if(!sock || (len>0 && !data)) {
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   187
        flib_log_e("Call to flib_socket_send with sock==null or data==null");
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   188
        return -1;
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   189
    }
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   190
    return SDLNet_TCP_Send(sock->sock, data, len);
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 8091
diff changeset
   191
}