void Broadcast_Setup( const char *dest ){
address_t address;
char sMsg[1024];
Net_Setup();
Net_StringToAddress( dest, &address );
brdcst_socket = Net_Connect( &address, 0 );
if ( brdcst_socket ) {
// send in a header
sprintf( sMsg, "<?xml version=\"1.0\"?><q3map_feedback version=\"" Q3MAP_STREAM_VERSION "\">" );
NMSG_Clear( &msg );
NMSG_WriteString( &msg, sMsg );
Net_Send( brdcst_socket, &msg );
}
}
// send a node down the stream, add it to the document
void xml_SendNode (xmlNodePtr node)
{
xmlBufferPtr xml_buf;
char xmlbuf[MAX_NETMESSAGE]; // we have to copy content from the xmlBufferPtr into an aux buffer .. that sucks ..
// this index loops through the node buffer
int pos = 0;
int size;
xmlAddChild( doc->children, node );
if (brdcst_socket)
{
xml_buf = xmlBufferCreate();
xmlNodeDump( xml_buf, doc, node, 0, 0 );
// the XML node might be too big to fit in a single network message
// l_net library defines an upper limit of MAX_NETMESSAGE
// there are some size check errors, so we use MAX_NETMESSAGE-10 to be safe
// if the size of the buffer exceeds MAX_NETMESSAGE-10 we'll send in several network messages
while (pos < (int)xml_buf->use)
{
// what size are we gonna send now?
(xml_buf->use - pos < MAX_NETMESSAGE - 10) ? (size = xml_buf->use - pos) : (size = MAX_NETMESSAGE - 10);
//++timo just a debug thing
if (size == MAX_NETMESSAGE - 10)
Sys_FPrintf (SYS_NOXML, "Got to split the buffer\n");
memcpy( xmlbuf, xml_buf->content+pos, size);
xmlbuf[size] = '\0';
NMSG_Clear( &msg );
NMSG_WriteString (&msg, xmlbuf );
Net_Send(brdcst_socket, &msg );
// now that the thing is sent prepare to loop again
pos += size;
}
#if 0
// NOTE: the NMSG_WriteString is limited to MAX_NETMESSAGE
// we will need to split into chunks
// (we could also go lower level, in the end it's using send and receiv which are not size limited)
//++timo FIXME: MAX_NETMESSAGE is not exactly the max size we can stick in the message
// there's some tweaking to do in l_net for that .. so let's give us a margin for now
//++timo we need to handle the case of a buffer too big to fit in a single message
// try without checks for now
if (xml_buf->use > MAX_NETMESSAGE-10 )
{
// if we send that we are probably gonna break the stream at the other end..
// and Error will call right there
//Error( "MAX_NETMESSAGE exceeded for XML feedback stream in FPrintf (%d)\n", xml_buf->use);
Sys_FPrintf (SYS_NOXML, "MAX_NETMESSAGE exceeded for XML feedback stream in FPrintf (%d)\n", xml_buf->use);
xml_buf->content[xml_buf->use]='\0'; //++timo this corrupts the buffer but we don't care it's for printing
Sys_FPrintf (SYS_NOXML, xml_buf->content);
}
size = xml_buf->use;
memcpy( xmlbuf, xml_buf->content, size );
xmlbuf[size] = '\0';
NMSG_Clear( &msg );
NMSG_WriteString (&msg, xmlbuf );
Net_Send(brdcst_socket, &msg );
#endif
xmlBufferFree( xml_buf );
}
}