[Ccrtp-devel] crash of ccrtp application

[Harald Haspl]

Hi!

My ccrtp-Application sometimes crashes unpredictable (segmentation fault).
The stack-backtrace always looks like the output attached to the end of this 
text.

Has anyone an idea what is going wrong there?
I do not evaluate RTCP Packets in the application, so I have not implemented 
those function in my code (onGotSDES,...)

Are there any special things I have to consider when I use the ccrtp library?
(ccrtp 1.3.6)


My class "Interface" is inherited from ost::SingleThreadRTPSession.

Interface::Interface : ost::SingleThreadRTPSession<> 
(ost::InetHostAddress("224.0.0.1"), 3100, 3101) {
        setSchedulingTimeout(10000);
        setExpireTimeout(1000000);
        addDestination(ost::InetHostAddress("224.0.0.1", 3100));
        setPayloadFormat(ost::StaticPayloadFormat(ost::sptPCMU));
        startRunning();
}


I send my data like that:

void Interface::sendMessage(const std::string& msg) {
      putData(getCurrentTimeStamp(),
                reinterpret_cast<const unsigned char*>(msg.c_str()),
                s.size());
}


and receiving the following way:

void Interface::operate() {
        while(true) {
                const ost::AppDataUnit* adu = 0;
                if (isWaiting()) {
                        adu = getData(getFirstTimestamp()); 
                }
                if(adu) {
                        handleMessage(adu->getData(), adu->getSize());
                        delete adu;
                } else {
                        ZThread::Thread::yield();
                }
        }
}



best regards,
Harald.


Backtrace of the core-file:

(gdb) bt
#0  0xb6d5a7c7 in raise () from /lib/tls/libc.so.6
#1  0xb6d5c1c9 in abort () from /lib/tls/libc.so.6
#2  0xb6d91525 in __fsetlocking () from /lib/tls/libc.so.6
#3  0xb6d97b77 in malloc_usable_size () from /lib/tls/libc.so.6
#4  0xb6d98012 in free () from /lib/tls/libc.so.6
#5  0xb6f4a5b1 in operator delete () from /usr/lib/libstdc++.so.6
#6  0xb6f2733d in std::string::_Rep::_M_destroy () 
from /usr/lib/libstdc++.so.6
#7  0xb6f28c4d in std::string::assign () from /usr/lib/libstdc++.so.6
#8  0xb71584b3 in ost::SDESItemsHolder::setItem () 
from /usr/lib/libccrtp1-1.3.so.0
#9  0xb7162a3d in ost::QueueRTCPManager::setSDESItem () 
from /usr/lib/libccrtp1-1.3.so.0
#10 0xb7162d05 in ost::QueueRTCPManager::onGotSDESChunk () 
from /usr/lib/libccrtp1-1.3.so.0
#11 0xb7160219 in ost::QueueRTCPManager::onGotSDES () 
from /usr/lib/libccrtp1-1.3.so.0
#12 0xb7162242 in ost::QueueRTCPManager::takeInControlPacket () 
from /usr/lib/libccrtp1-1.3.so.0
#13 0xb7162358 in ost::QueueRTCPManager::controlReceptionService () 
from /usr/lib/libccrtp1-1.3.so.0
#14 0xb7f10ec5 in 
ost::SingleThreadRTPSession<ost::DualRTPChannel<ost::RTPBaseUDPIPv4Socket>, 
ost::DualRTPChannel<ost::RTPBaseUDPIPv4Socket>, ost::AVPQueue>::run 
(this=0xb4121ea8) at rtp.h:480
#15 0xb70c9872 in ost::ThreadImpl::ThreadExecHandler () 
from /usr/lib/libccgnu2-1.3.so.1
#16 0xb70c8993 in ost::Thread::yield () from /usr/lib/libccgnu2-1.3.so.1
#17 0xb74a3ced in start_thread () from /lib/tls/libpthread.so.0
#18 0xb6e02dde in clone () from /lib/tls/libc.so.6




-- 
Harald Haspl

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