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send dev-targeted messages pulled from db by rewriting their headers

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with a new packetID.
This commit is contained in:
Eric House 2013-08-28 21:36:12 -07:00
parent de125eb9a6
commit b80051cc73
1 changed files with 33 additions and 3 deletions
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36
xwords4/relay/xwrelay.cpp
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@ -523,6 +523,22 @@ assemble_packet( vector<uint8_t>& packet, uint32_t* packetIDP, XWRelayReg cmd,
va_end( ap );
}
// make a new packet out of an old, stealing its cmd field
static void
assemble_packet( vector<uint8_t>& newPacket, uint32_t* packetID,
const vector<uint8_t>& oldPacket )
{
UDPHeader header;
const uint8_t* ptr = oldPacket.data();
size_t len = oldPacket.size();
if ( !getHeader( &ptr, ptr + len, &header ) ) {
assert( 0 );
}
assert( XWPDEV_PROTO_VERSION_1 == header.proto );
len -= ptr - oldPacket.data(); // subtract off header length
assemble_packet( newPacket, packetID, header.cmd, ptr, len, NULL );
}
static bool
get_addr_info_if( const AddrInfo* addr, int* sockp,
const struct sockaddr** dest_addr )
@ -1507,10 +1523,24 @@ retrieveMessages( DevID& devID, const AddrInfo* addr )
vector<DBMgr::MsgInfo>::const_iterator iter;
for ( iter = msgs.begin(); iter != msgs.end(); ++iter ) {
DBMgr::MsgInfo msg = *iter;
const DBMgr::MsgInfo& msg = *iter;
uint32_t packetID;
if ( !send_msg_via_udp( addr, msg.token, msg.msg.data(),
msg.msg.size(), &packetID ) ) {
bool success = false;
if ( AddrInfo::NULL_TOKEN == msg.token ) {
int socket;
const struct sockaddr* dest_addr;
if ( get_addr_info_if( addr, &socket, &dest_addr ) ) {
vector<uint8_t> newPacket;
assemble_packet( newPacket, &packetID, msg.msg );
success = 0 < send_packet_via_udp_impl( newPacket, socket,
dest_addr );
}
} else {
success = send_msg_via_udp( addr, msg.token, msg.msg.data(),
msg.msg.size(), &packetID );
}
if ( !success ) {
logf( XW_LOGERROR, "%s: unable to send to devID %d",
__func__, devID.asRelayID() );
break;