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sending structutres about winsocks sendto

 

sending structutres about winsocks sendto

CrazyPlaya

15 Sep, 2008 - 11:35 PM
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Hi @ all,

i´m trying to send an RTP Packet to a Server. My Packet Structure looks like this:

CODE

struct rtppacket
{
    unsigned int version:2;         /* protocol version */
    unsigned int padding:1;         /* padding flag */
    unsigned int extension:1;       /* header extension flag */
    unsigned int csrcccount:4;      /* CSRC count */
    unsigned int marker:1;          /* marker bit */
    unsigned int payloadtype:7;     /* payload type */
    unsigned int sequencenumber:16; /* sequence number */
    u_int32_t timestamp;            /* timestamp */
    u_int32_t ssrc;                   /* synchronization source */
    u_int32_t csrc[1];
    void* datap;
    int datalen;
}


that´s my way to fill and send the structure:
CODE

m_rtpPack.version = 2;
m_rtpPack.sequencenumber = 1;
m_rtpPack.csrc[0] = 0;
m_rtpPack.csrcccount = 0;
m_rtpPack.extension = 0;
m_rtpPack.marker = 1;
m_rtpPack.payloadtype = 0;
m_rtpPack.padding = 0;
m_rtpPack.ssrc = 0;
m_rtpPack.timestamp = GetTickCount();
...
//Buffer füllen
...
m_rtpPack.datap = szBuffer;
m_rtpPack.datalen = sizeof(szBuffer); //= 1024

nSend = sendto(m_Socket, (char*)&m_rtpPack, sizeof(m_rtpPack), 0, (SOCKADDR*)&m_saRemote, sizeof(SOCKADDR));


That doesn´t work. If I take a look of the RTP flow with packetyzer it can read the header information of rtp and the server can´t do something with incoming.
The structure padding compiler option is Zp1. What I do false?

Greetzs
CrazyPlaya

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