error in broadcaster demo - mac os x

mediasoup libraries
1

Hi all,
I’m trying to run the broadcaster on mac os x.
when I launch the application I obtain the following error (output of lldb)

`* thread #4, name = ‘a’, stop reason = EXC_BAD_ACCESS (code=EXC_I386_GPFLT)

  • frame #0: 0x00007fff70072929 libsystem_platform.dylib_platform_memmove$VARIANT$Haswell + 41 frame #1: 0x00007fff6d17eba8 libc++.1.dylibstd::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >::basic_string(std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > const&) + 140
    frame #2: 0x000000010057ae3d broadcastercricket::RtpDataCodec::RtpDataCodec(int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) [inlined] cricket::Codec::Codec(this=0x0000700005151d30, id=<unavailable>, name=<unavailable>, clockrate=90000) at codec.cc:127:15 [opt] frame #3: 0x000000010057ae24 broadcastercricket::RtpDataCodec::RtpDataCodec(int, std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > const&) [inlined] cricket::RtpDataCodec::RtpDataCodec(this=0x0000700005151d30, id=, name=) at codec.cc:373 [opt]
    frame #4: 0x000000010057ae1a broadcastercricket::RtpDataCodec::RtpDataCodec(this=0x0000700005151d30, id=<unavailable>, name=<unavailable>) at codec.cc:373 [opt] frame #5: 0x0000000100582226 broadcastercricket::RtpDataEngine::RtpDataEngine(this=0x0000000104e0d5d0) at rtp_data_engine.cc:40:7 [opt]
    frame #6: 0x0000000100319854 broadcasterwebrtc::PeerConnectionFactory::Initialize() [inlined] std::__1::__unique_if<cricket::RtpDataEngine>::__unique_single std::__1::make_unique<cricket::RtpDataEngine>() at memory:3043:32 [opt] frame #7: 0x000000010031983f broadcasterwebrtc::PeerConnectionFactory::Initialize(this=0x0000000104e0d310) at peer_connection_factory.cc:143 [opt]
    frame #8: 0x000000010031b423 broadcasterwebrtc::MethodCall<webrtc::PeerConnectionFactory, bool>::OnMessage(rtc::Message*) [inlined] void webrtc::ReturnType<bool>::Invoke<webrtc::PeerConnectionFactory, bool (this=0x00007ffeefbfe1c0, c=<unavailable>, m=<unavailable>)()>(webrtc::PeerConnectionFactory*, bool (webrtc::PeerConnectionFactory::*)()) at proxy.h:78:10 [opt] frame #9: 0x000000010031b411 broadcasterwebrtc::MethodCall<webrtc::PeerConnectionFactory, bool>::OnMessage(rtc::Message*) [inlined] void webrtc::MethodCall<webrtc::PeerConnectionFactory, bool>::Invoke<>(this=0x00007ffeefbfe170) at proxy.h:136 [opt]
    frame #10: 0x000000010031b409 broadcasterwebrtc::MethodCall<webrtc::PeerConnectionFactory, bool>::OnMessage(this=0x00007ffeefbfe170, (null)=<unavailable>) at proxy.h:132 [opt] frame #11: 0x000000010025d098 broadcasternon-virtual thunk to webrtc::internal::SynchronousMethodCall::OnMessage(rtc::Message*) [inlined] webrtc::internal::SynchronousMethodCall::OnMessage(this=, (null)=) at proxy.cc:32:11 [opt]
    frame #12: 0x000000010025d089 broadcasternon-virtual thunk to webrtc::internal::SynchronousMethodCall::OnMessage(rtc::Message*) at proxy.cc:0 [opt] frame #13: 0x00000001003edcab broadcasterrtc::thread::Dispatch(this=, pmsg=0x0000700005151f20) at thread.cc:664:19 [opt]
    frame #14: 0x00000001003ec2ae broadcasterrtc::Thread::ProcessMessages(this=0x0000000104e042b0, cmsLoop=<unavailable>) at thread.cc:1000:5 [opt] frame #15: 0x00000001003ee147 broadcasterrtc::thread::PreRun(pv=0x0000000104e042b0) at thread.cc:831:11 [opt]
    frame #16: 0x00007fff70081109 libsystem_pthread.dylib_pthread_start + 148 frame #17: 0x00007fff7007cb8b libsystem_pthread.dylibthread_start + 15`

Do you have idea why there is this error?
Thank you very much
Angelo

2

Hi,

Sorry, this is related to libwebrtc, not any mediasoup library. You need to search and ask in the corresponding mailing list.

discuss-webrtc@googlegroups.com

3

Hi,
I corrected the version of libcurl and I solved that error, but I have this error now:

[INFO] Broadcaster::Start()
2020-09-09 14:07:43.157743+0200 broadcaster[29944:813048] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x103c13d70> F8BB1C28-BAE8-11D6-9C31-00039315CD46
Process 29944 stopped
* thread #5, name = 'network_thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x50)
    frame #0: 0x0000000000000050
error: memory read failed for 0x0
Target 0: (broadcaster) stopped.
(lldb) bt
* thread #5, name = 'network_thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x50)
  * frame #0: 0x0000000000000050
    frame #1: 0x0000000102abe7f4 libcrypto.1.1.dylib`asn1_item_embed_new + 97
    frame #2: 0x0000000102abeaa8 libcrypto.1.1.dylib`asn1_template_new + 112
    frame #3: 0x0000000102abe90f libcrypto.1.1.dylib`asn1_item_embed_new + 380
    frame #4: 0x0000000102abe775 libcrypto.1.1.dylib`ASN1_item_new + 25
    frame #5: 0x00000001003d979d broadcaster`rtc::OpenSSLCertificate::Generate(rtc::OpenSSLKeyPair*, rtc::SSLIdentityParams const&) [inlined] rtc::(anonymous namespace)::MakeCertificate(pkey=0x0000000102e0c7d8, params=0x00007000074b6c60) at openssl_certificate.cc:67:15 [opt]
    frame #6: 0x00000001003d9769 broadcaster`rtc::OpenSSLCertificate::Generate(key_pair=0x0000000102e09a90, params=<unavailable>) at openssl_certificate.cc:134 [opt]
    frame #7: 0x00000001003db177 broadcaster`rtc::OpenSSLIdentity::CreateInternal(params=0x00007000074b6d40) at openssl_identity.cc:218:9 [opt]
    frame #8: 0x00000001003db348 broadcaster`rtc::OpenSSLIdentity::CreateWithExpiration(common_name=<unavailable>, key_params=0x0000000102f15050, certificate_lifetime=2592000) at openssl_identity.cc:241:10 [opt]
    frame #9: 0x00000001003e9ee7 broadcaster`rtc::SSLIdentity::Create(common_name=<unavailable>, key_param=<unavailable>) at ssl_identity.cc:223:10 [opt]
    frame #10: 0x00000001003e2990 broadcaster`rtc::RTCCertificateGenerator::GenerateCertificate(key_params=0x0000000102f15050, expires_ms=0x0000000102f15060) at rtc_certificate_generator.cc:114:16 [opt]
    frame #11: 0x00000001003e2ca6 broadcaster`rtc::(anonymous namespace)::RTCCertificateGenerationTask::OnMessage(this=0x0000000102f15030, msg=0x00007000074b6f20) at rtc_certificate_generator.cc:68:24 [opt]
    frame #12: 0x00000001003ed18b broadcaster`rtc::Thread::Dispatch(rtc::Message*) + 235
    frame #13: 0x00000001003eb7ae broadcaster`rtc::Thread::ProcessMessages(int) + 302
    frame #14: 0x00000001003ed62d broadcaster`rtc::Thread::PreRun(void*) + 109
    frame #15: 0x00007fff6cb9b109 libsystem_pthread.dylib`_pthread_start + 148
    frame #16: 0x00007fff6cb96b8b libsystem_pthread.dylib`thread_start + 15

I understand that the problem is inside webrtc, but I want to know if I have to compile the application linking against the same version of openssl of webrtc, and if yes, which version?
Thank you for your help

4

I noticed that the error is about an incompatibility of openssl and boringssl.
I tried to use cpr installed with brew.
Now I’m obtaining a linkin error:

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_NSScreen", referenced from:
      objc-class-ref in libwebrtc.a(desktop_configuration.o)
  "std::__1::__libcpp_debug_function", referenced from:
      bool std::__1::operator==<char, std::__1::char_traits<char>, std::__1::allocator<char> >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*) in libwebrtc.a(logging.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::append(char const*, unsigned long) in libwebrtc.a(logging.o)
      std::__1::char_traits<char>::copy(char*, char const*, unsigned long) in libwebrtc.a(logging.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::assign(char const*) in libwebrtc.a(logging.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::assign(char const*, unsigned long) in libwebrtc.a(logging.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::basic_string<std::nullptr_t>(char const*) in libwebrtc.a(logging.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::compare(unsigned long, unsigned long, char const*, unsigned long) const in libwebrtc.a(logging.o)
      ...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

do you have a solution for this?
I don’t understand what I have to include to avoid this c++ errors.

Thank you a lot
Angelo

5

Hi found a solution:
I’m using libcurl and libcpr provided by brew and I changed a little bit the cmake.
let me know if you like this solution, so I can put the code in your repository.

Angelo

6

Feel free to make a PR exposing your changes and we’ll see.

7

this is my version:

I create a pull request about it.
Thanks for your help
Angelo