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Updated SDL_net

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This commit is contained in:
pelya
2012-03-01 12:31:51 +02:00
parent c0482e36e2
commit 6d88235cf4
9 changed files with 410 additions and 1988 deletions
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501
project/jni/sdl_net/SDLnetUDP.c
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@@ -1,187 +1,50 @@
/*
SDL_net: An example cross-platform network library for use with SDL
Copyright (C) 1997-2004 Sam Lantinga
SDL_net: An example cross-platform network library for use with SDL
Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@libsdl.org
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* $Id: SDLnetUDP.c 1192 2004-01-04 17:41:55Z slouken $ */
/* $Id$ */
#include "SDLnetsys.h"
#include "SDL_net.h"
#ifdef MACOS_OPENTRANSPORT
#include <Events.h>
#ifdef __WIN32__
#define srandom srand
#define random rand
#endif
struct UDP_channel {
int numbound;
IPaddress address[SDLNET_MAX_UDPADDRESSES];
};
struct _UDPsocket {
int ready;
SOCKET channel;
IPaddress address;
#ifdef MACOS_OPENTRANSPORT
OTEventCode newEvent;
OTEventCode event;
OTEventCode curEvent;
OTEventCode newCompletion;
OTEventCode completion;
OTEventCode curCompletion;
TEndpointInfo info;
Boolean readShutdown;
Boolean writeShutdown;
OSStatus error;
OTConfigurationRef config; // Master configuration. you can clone this.
#endif /* MACOS_OPENTRANSPORT */
struct UDP_channel binding[SDLNET_MAX_UDPCHANNELS];
struct UDP_channel {
int numbound;
IPaddress address[SDLNET_MAX_UDPADDRESSES];
} binding[SDLNET_MAX_UDPCHANNELS];
/* For debugging purposes */
int packetloss;
};
#ifdef MACOS_OPENTRANSPORT
/* A helper function for Mac OpenTransport support*/
// This function is a complete copy from GUSI
// ( masahiro minami<elsur@aaa.letter.co.jp> )
// ( 01/02/19 )
//
// I guess this function should be put in SDLnet.c
// ( 010315 masahiro minami<elsur@aaa.letter.co.jp>)
// (TODO)
static __inline__ Uint32 CompleteMask(OTEventCode code)
{
return 1 << (code & 0x1F);
}
/* Notifier for async OT calls */
// This function is completely same as AsyncTCPNotifier,
// except for the argument, UDPsocket / TCPsocket
// ( 010315 masahiro minami<elsur@aaa.letter.co.jp>)
static pascal void AsyncUDPNotifier( UDPsocket sock, OTEventCode code,
OTResult result, void* cookie )
{
switch( code & 0x7f000000L)
{
case 0:
sock->newEvent |= code;
result = 0;
break;
case kCOMPLETEEVENT:
if(!(code & 0x00FFFFE0 ))
sock->newCompletion |= CompleteMask( code );
if( code == T_OPENCOMPLETE )
sock->channel = (SOCKET)(cookie);
break;
default:
if( code != kOTProviderWillClose )
result = 0;
}
// Do we need these ???? TODO
// sock->SetAsyncMacError( result );
// sock->Wakeup();
// Do we need to ?
//YieldToAnyThread();
}
/* Retrieve OT event */
// This function is completely same as AsyncTCPPopEvent,
// except for the argument, UDPsocket / TCPsocket
// ( 010315 masahiro minami<elsur@aaa.letter.co.jp>)
static void AsyncUDPPopEvent( UDPsocket sock )
{
// Make sure OT calls are not interrupted
// Not sure if we really need this.
OTEnterNotifier( sock->channel );
sock->event |= (sock->curEvent = sock->newEvent );
sock->completion |= ( sock->curCompletion = sock->newCompletion );
sock->newEvent = sock->newCompletion = 0;
OTLeaveNotifier( sock->channel );
if( sock->curEvent & T_UDERR)
{
// We just clear the error.
// Should we feed this back to users ?
// (TODO )
OTRcvUDErr( sock->channel, NULL );
}
// Remote is disconnecting...
if( sock->curEvent & ( T_DISCONNECT | T_ORDREL ))
{
sock->readShutdown = true;
}
if( sock->curEvent &T_CONNECT)
{
// Ignore the info of remote (second parameter).
// Shoule we care ?
// (TODO)
OTRcvConnect( sock->channel, NULL );
}
if( sock->curEvent & T_ORDREL )
{
OTRcvOrderlyDisconnect( sock->channel );
}
if( sock->curEvent & T_DISCONNECT )
{
OTRcvDisconnect( sock->channel, NULL );
}
// Should we ??
// (010318 masahiro minami<elsur@aaa.letter.co.jp>
//YieldToAnyThread();
}
/* Create a new UDPsocket */
// Because TCPsocket structure gets bigger and bigger,
// I think we'd better have a constructor function and delete function.
// ( 01/02/25 masahiro minami<elsur@aaa.letter.co.jp> )
/*static*/ UDPsocket AsyncUDPNewSocket()
{
UDPsocket sock;
sock = (UDPsocket)malloc(sizeof(*sock));
if ( sock == NULL ) {
SDLNet_SetError("Out of memory");
return NULL;
}
sock->newEvent = 0;
sock->event = 0;
sock->curEvent = 0;
sock->newCompletion = 0;
sock->completion = 0;
sock->curCompletion = 0;
//sock->info = NULL;
sock->readShutdown = sock->writeShutdown = false;
sock->error = 0;
sock->config = NULL;
return sock;
}
#endif /* MACOS_OPENTRANSPORT */
/* Allocate/free a single UDP packet 'size' bytes long.
The new packet is returned, or NULL if the function ran out of memory.
*/
@@ -201,6 +64,7 @@ extern UDPpacket *SDLNet_AllocPacket(int size)
}
}
if ( error ) {
SDLNet_SetError("Out of memory");
SDLNet_FreePacket(packet);
packet = NULL;
}
@@ -248,6 +112,7 @@ UDPpacket **SDLNet_AllocPacketV(int howmany, int size)
packetV[i] = NULL;
if ( i != howmany ) {
SDLNet_SetError("Out of memory");
SDLNet_FreePacketV(packetV);
packetV = NULL;
}
@@ -272,12 +137,11 @@ void SDLNet_FreePacketV(UDPpacket **packetV)
/* Open a UDP network socket
If 'port' is non-zero, the UDP socket is bound to a fixed local port.
*/
extern UDPsocket SDLNet_UDP_Open(Uint16 port)
UDPsocket SDLNet_UDP_Open(Uint16 port)
{
UDPsocket sock;
#ifdef MACOS_OPENTRANSPORT
EndpointRef dummy = NULL;
#endif
struct sockaddr_in sock_addr;
socklen_t sock_len;
/* Allocate a UDP socket structure */
sock = (UDPsocket)malloc(sizeof(*sock));
@@ -286,124 +150,91 @@ extern UDPsocket SDLNet_UDP_Open(Uint16 port)
goto error_return;
}
memset(sock, 0, sizeof(*sock));
memset(&sock_addr, 0, sizeof(sock_addr));
/* Open the socket */
#ifdef MACOS_OPENTRANSPORT
{
sock->error = OTAsyncOpenEndpoint(
OTCreateConfiguration(kUDPName),0, &(sock->info),
(OTNotifyProcPtr)AsyncUDPNotifier, sock );
AsyncUDPPopEvent( sock );
while( !sock->error && !( sock->completion & CompleteMask(T_OPENCOMPLETE)))
{
AsyncUDPPopEvent( sock );
}
if( sock->error )
{
SDLNet_SetError("Could not open UDP socket");
goto error_return;
}
// Should we ??
// (01/05/03 minami<elsur@aaa.letter.co.jp>
OTSetBlocking( sock->channel );
}
#else
sock->channel = socket(AF_INET, SOCK_DGRAM, 0);
#endif /* MACOS_OPENTRANSPORT */
if ( sock->channel == INVALID_SOCKET )
{
SDLNet_SetError("Couldn't create socket");
goto error_return;
}
#ifdef MACOS_OPENTRANSPORT
{
InetAddress required, assigned;
TBind req_addr, assigned_addr;
OSStatus status;
InetInterfaceInfo info;
memset(&assigned_addr, 0, sizeof(assigned_addr));
assigned_addr.addr.maxlen = sizeof(assigned);
assigned_addr.addr.len = sizeof(assigned);
assigned_addr.addr.buf = (UInt8 *) &assigned;
if ( port ) {
status = OTInetGetInterfaceInfo( &info, kDefaultInetInterface );
if( status != kOTNoError )
goto error_return;
OTInitInetAddress(&required, port, info.fAddress );
req_addr.addr.maxlen = sizeof( required );
req_addr.addr.len = sizeof( required );
req_addr.addr.buf = (UInt8 *) &required;
sock->error = OTBind(sock->channel, &req_addr, &assigned_addr);
} else {
sock->error = OTBind(sock->channel, nil, &assigned_addr );
}
AsyncUDPPopEvent(sock);
while( !sock->error && !(sock->completion & CompleteMask(T_BINDCOMPLETE)))
{
AsyncUDPPopEvent(sock);
}
if (sock->error != noErr)
{
SDLNet_SetError("Couldn't bind to local port, OTBind() = %d",(int) status);
goto error_return;
}
sock->address.host = assigned.fHost;
sock->address.port = assigned.fPort;
#ifdef DEBUG_NET
printf("UDP open host = %d, port = %d\n", assigned.fHost, assigned.fPort );
#endif
}
#else
/* Bind locally, if appropriate */
if ( port )
{
struct sockaddr_in sock_addr;
memset(&sock_addr, 0, sizeof(sock_addr));
sock_addr.sin_family = AF_INET;
sock_addr.sin_addr.s_addr = INADDR_ANY;
sock_addr.sin_port = SDL_SwapBE16(port);
sock_addr.sin_family = AF_INET;
sock_addr.sin_addr.s_addr = INADDR_ANY;
sock_addr.sin_port = SDL_SwapBE16(port);
/* Bind the socket for listening */
if ( bind(sock->channel, (struct sockaddr *)&sock_addr,
sizeof(sock_addr)) == SOCKET_ERROR ) {
SDLNet_SetError("Couldn't bind to local port");
goto error_return;
}
/* Fill in the channel host address */
sock->address.host = sock_addr.sin_addr.s_addr;
sock->address.port = sock_addr.sin_port;
/* Bind the socket for listening */
if ( bind(sock->channel, (struct sockaddr *)&sock_addr,
sizeof(sock_addr)) == SOCKET_ERROR ) {
SDLNet_SetError("Couldn't bind to local port");
goto error_return;
}
/* Get the bound address and port */
sock_len = sizeof(sock_addr);
if ( getsockname(sock->channel, (struct sockaddr *)&sock_addr, &sock_len) < 0 ) {
perror("getsockname");
SDLNet_SetError("Couldn't get socket address");
goto error_return;
}
/* Fill in the channel host address */
sock->address.host = sock_addr.sin_addr.s_addr;
sock->address.port = sock_addr.sin_port;
#ifdef SO_BROADCAST
/* Allow LAN broadcasts with the socket */
{ int yes = 1;
setsockopt(sock->channel, SOL_SOCKET, SO_BROADCAST, (char*)&yes, sizeof(yes));
}
#endif
#endif /* MACOS_OPENTRANSPORT */
#ifdef IP_ADD_MEMBERSHIP
/* Receive LAN multicast packets on 224.0.0.1
This automatically works on Mac OS X, Linux and BSD, but needs
this code on Windows.
*/
/* A good description of multicast can be found here:
http://www.docs.hp.com/en/B2355-90136/ch05s05.html
*/
/* FIXME: Add support for joining arbitrary groups to the API */
{
struct ip_mreq g;
g.imr_multiaddr.s_addr = inet_addr("224.0.0.1");
g.imr_interface.s_addr = INADDR_ANY;
setsockopt(sock->channel, IPPROTO_IP, IP_ADD_MEMBERSHIP,
(char*)&g, sizeof(g));
}
#endif
/* The socket is ready */
return(sock);
error_return:
#ifdef MACOS_OPENTRANSPORT
if( dummy )
OTCloseProvider( dummy );
#endif
SDLNet_UDP_Close(sock);
return(NULL);
}
void SDLNet_UDP_SetPacketLoss(UDPsocket sock, int percent)
{
/* FIXME: We may want this behavior to be reproducible
but there isn't a portable reentrant random
number generator with good randomness.
*/
srandom(SDL_GetTicks());
if (percent < 0) {
percent = 0;
} else if (percent > 100) {
percent = 100;
}
sock->packetloss = percent;
}
/* Verify that the channel is in the valid range */
static int ValidChannel(int channel)
{
@@ -423,10 +254,15 @@ static int ValidChannel(int channel)
address, to which all outbound packets on the channel are sent.
This function returns the channel which was bound, or -1 on error.
*/
int SDLNet_UDP_Bind(UDPsocket sock, int channel, IPaddress *address)
int SDLNet_UDP_Bind(UDPsocket sock, int channel, const IPaddress *address)
{
struct UDP_channel *binding;
if ( sock == NULL ) {
SDLNet_SetError("Passed a NULL socket");
return(-1);
}
if ( channel == -1 ) {
for ( channel=0; channel < SDLNET_MAX_UDPCHANNELS; ++channel ) {
binding = &sock->binding[channel];
@@ -493,48 +329,33 @@ int SDLNet_UDP_SendV(UDPsocket sock, UDPpacket **packets, int npackets)
int numsent, i, j;
struct UDP_channel *binding;
int status;
#ifndef MACOS_OPENTRANSPORT
int sock_len;
struct sockaddr_in sock_addr;
if ( sock == NULL ) {
SDLNet_SetError("Passed a NULL socket");
return(0);
}
/* Set up the variables to send packets */
sock_len = sizeof(sock_addr);
#endif
numsent = 0;
for ( i=0; i<npackets; ++i )
{
/* Simulate packet loss, if desired */
if (sock->packetloss) {
if ((random()%100) <= sock->packetloss) {
packets[i]->status = packets[i]->len;
++numsent;
continue;
}
}
/* if channel is < 0, then use channel specified in sock */
if ( packets[i]->channel < 0 )
{
#ifdef MACOS_OPENTRANSPORT
TUnitData OTpacket;
InetAddress address;
memset(&OTpacket, 0, sizeof(OTpacket));
OTpacket.addr.buf = (Uint8 *)&address;
OTpacket.addr.len = (sizeof address);
OTpacket.udata.buf = packets[i]->data;
OTpacket.udata.len = packets[i]->len;
OTInitInetAddress(&address, packets[i]->address.port, packets[i]->address.host);
#ifdef DEBUG_NET
printf("Packet send address: 0x%8.8x:%d, length = %d\n", packets[i]->address.host, packets[i]->address.port, packets[i]->len);
#endif
status = OTSndUData(sock->channel, &OTpacket);
#ifdef DEBUG_NET
printf("SDLNet_UDP_SendV OTSndUData return value is ;%d\n", status );
#endif
AsyncUDPPopEvent( sock );
packets[i]->status = status;
if (status == noErr)
{
++numsent;
}
#else
sock_addr.sin_addr.s_addr = packets[i]->address.host;
sock_addr.sin_port = packets[i]->address.port;
sock_addr.sin_family = AF_INET;
@@ -546,7 +367,6 @@ int SDLNet_UDP_SendV(UDPsocket sock, UDPpacket **packets, int npackets)
packets[i]->status = status;
++numsent;
}
#endif /* MACOS_OPENTRANSPORT */
}
else
{
@@ -559,33 +379,6 @@ int SDLNet_UDP_SendV(UDPsocket sock, UDPpacket **packets, int npackets)
for ( j=binding->numbound-1; j>=0; --j )
{
#ifdef MACOS_OPENTRANSPORT
TUnitData OTpacket;
InetAddress address;
OTInitInetAddress(&address, binding->address[j].port,binding->address[j].host);
#ifdef DEBUG_NET
printf("Packet send address: 0x%8.8x:%d, length = %d\n", binding->address[j].host, binding->address[j].port, packets[i]->len);
#endif
memset(&OTpacket, 0, sizeof(OTpacket));
OTpacket.addr.buf = (Uint8 *)&address;
OTpacket.addr.len = (sizeof address);
OTpacket.udata.buf = packets[i]->data;
OTpacket.udata.len = packets[i]->len;
status = OTSndUData(sock->channel, &OTpacket);
#ifdef DEBUG_NET
printf("SDLNet_UDP_SendV OTSndUData returne value is;%d\n", status );
#endif
AsyncUDPPopEvent(sock);
packets[i]->status = status;
if (status == noErr)
{
++numsent;
}
#else
sock_addr.sin_addr.s_addr = binding->address[j].host;
sock_addr.sin_port = binding->address[j].port;
sock_addr.sin_family = AF_INET;
@@ -597,7 +390,6 @@ int SDLNet_UDP_SendV(UDPsocket sock, UDPpacket **packets, int npackets)
packets[i]->status = status;
++numsent;
}
#endif /* MACOS_OPENTRANSPORT */
}
}
}
@@ -616,35 +408,12 @@ int SDLNet_UDP_Send(UDPsocket sock, int channel, UDPpacket *packet)
static int SocketReady(SOCKET sock)
{
int retval = 0;
#ifdef MACOS_OPENTRANSPORT
OTResult status;
#else
struct timeval tv;
fd_set mask;
#endif
#ifdef MACOS_OPENTRANSPORT
//status = OTGetEndpointState(sock);
status = OTLook(sock);
if( status > 0 )
retval = 1;
/* switch( status )
{
// case T_IDLE:
case T_DATAXFER:
// case T_INREL:
retval = 1;
break;
default:
OTCountDataBytes( sock, &numBytes );
if( numBytes )
retval = 1;
}*/
#else
/* Check the file descriptors for available data */
do {
errno = 0;
SDLNet_SetLastError(0);
/* Set up the mask of file descriptors */
FD_ZERO(&mask);
@@ -656,8 +425,7 @@ static int SocketReady(SOCKET sock)
/* Look! */
retval = select(sock+1, &mask, NULL, NULL, &tv);
} while ( errno == EINTR );
#endif /* MACOS_OPENTRANSPORT */
} while ( SDLNet_GetLastError() == EINTR );
return(retval == 1);
}
@@ -673,61 +441,29 @@ extern int SDLNet_UDP_RecvV(UDPsocket sock, UDPpacket **packets)
{
int numrecv, i, j;
struct UDP_channel *binding;
#ifdef MACOS_OPENTRANSPORT
TUnitData OTpacket;
OTFlags flags;
InetAddress address;
#else
int sock_len;
socklen_t sock_len;
struct sockaddr_in sock_addr;
#endif
if ( sock == NULL ) {
return(0);
}
numrecv = 0;
while ( packets[numrecv] && SocketReady(sock->channel) )
{
UDPpacket *packet;
UDPpacket *packet;
packet = packets[numrecv];
#ifdef MACOS_OPENTRANSPORT
memset(&OTpacket, 0, sizeof(OTpacket));
OTpacket.addr.buf = (Uint8 *)&address;
OTpacket.addr.maxlen = (sizeof address);
OTpacket.udata.buf = packet->data;
OTpacket.udata.maxlen = packet->maxlen;
packet->status = OTRcvUData(sock->channel, &OTpacket, &flags);
#ifdef DEBUG_NET
printf("Packet status: %d\n", packet->status);
#endif
AsyncUDPPopEvent(sock);
if (packet->status == noErr)
{
packet->len = OTpacket.udata.len;
packet->address.host = address.fHost;
packet->address.port = address.fPort;
#ifdef DEBUG_NET
printf("Packet address: 0x%8.8x:%d, length = %d\n", packet->address.host, packet->address.port, packet->len);
#endif
}
#else
sock_len = sizeof(sock_addr);
packet->status = recvfrom(sock->channel,
packet->data, packet->maxlen, 0,
(struct sockaddr *)&sock_addr,
#ifdef USE_GUSI_SOCKETS
(unsigned int *)&sock_len);
#else
&sock_len);
#endif
if ( packet->status >= 0 ) {
packet->len = packet->status;
packet->address.host = sock_addr.sin_addr.s_addr;
packet->address.port = sock_addr.sin_port;
}
#endif
if (packet->status >= 0)
{
packet->channel = -1;
for (i=(SDLNET_MAX_UDPCHANNELS-1); i>=0; --i )
@@ -783,12 +519,7 @@ extern void SDLNet_UDP_Close(UDPsocket sock)
{
if ( sock->channel != INVALID_SOCKET )
{
#ifdef MACOS_OPENTRANSPORT
OTUnbind(sock->channel);
OTCloseProvider(sock->channel);
#else
closesocket(sock->channel);
#endif /* MACOS_OPENTRANSPORT */
}
free(sock);