我试图构建一个Android WebRTC应用程序。目前我收到此错误：
04-10 15:40:13.082 10122-10122/? A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 10122 (...), pid 10122 (...)
我不知道为什么。奇怪的是，我真的无法说出它何时以及为什么启动，因为该应用程序以前运行完美。
我试图找到错误，并在一些调试的帮助下发现错误源于
MediaStream stream = peerConnectionFactory.createLocalMediaStream("102");
stream.addTrack(localAudioTrack);
stream.addTrack(localVideoTrack);
localPeer.addStream(stream);
其中 localPeer 是我的本地 PeerConnection。
有人知道如何解决这个问题吗？
整个堆栈跟踪是：
04-10 15:40:13.139 10208-10208/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'google/bullhead/bullhead:8.1.0/OPM3.171019.016/4565142:user/release-keys'
Revision: 'rev_1.0'
ABI: 'arm64'
pid: 10122, tid: 10122, name: emoteassistance >>> dropslab.bruno.remoteassistance <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
Cause: null pointer dereference
x0 0000000000000000 x1 0000007ff93b1010 x2 0000000000000000 x3 00000078166e217a
x4 0000007ff93b0ff0 x5 0000007800bb6465 x6 0000000000000002 x7 0000007ff93b0fb0
x8 569406812e3f47b7 x9 569406812e3f47b7 x10 0000000000430000 x11 00000078167a07a8
x12 0000000000000008 x13 0000007ff93b059c x14 00000078166bab20 x15 0000000000000000
x16 0000000000000000 x17 0000007ff93b059c x18 0000000013077e48 x19 00000077ff236df0
x20 0000000000000000 x21 00000078168bea00 x22 0000007ff93b153c x23 0000007800bf892b
x24 000000000000000c x25 000000789b444a40 x26 00000078168beaa0 x27 0000000000000003
x28 0000007ff93b1270 x29 0000007ff93b1240 x30 00000077fd4c443c
sp 0000007ff93b1230 pc 00000077fd4c443c pstate 0000000060000000
04-10 15:40:13.142 3253-10222/? E/mm-camera-img: module_imglib_start_session:1778 ###Img_Loglevel 1
04-10 15:40:13.145 3253-10219/? E/mm-camera: q3a_port_init:1753 q3a_port_init: 3A VERSION --> 4.1.0.r9
04-10 15:40:13.146 3253-10217/? E/mm-camera-isp2: isp_module_start_session:360 num_session_opened 1
04-10 15:40:13.160 3253-10232/? E/libaprpmem: Ion allocation success virtaddr : ret=3951620096 fd=38 heapid=33554432
04-10 15:40:13.163 3253-10232/? E/libaprpmem: Ion allocation success virtaddr : ret=3947651072 fd=41 heapid=33554432
04-10 15:40:13.166 3253-10232/? E/libaprpmem: Ion allocation success virtaddr : ret=3939713024 fd=42 heapid=33554432
04-10 15:40:13.168 10208-10208/? A/DEBUG: backtrace:
#00 pc 00000000005bf43c /data/app/dropslab.bruno.remoteassistance-AB_bvseEj1CPHtgYD8nSiw==/lib/arm64/libjingle_peerconnection_so.so (offset 0x21b000) (Java_org_webrtc_PeerConnection_nativeAddLocalStream+28)
#01 pc 0000000000553bf0 /system/lib64/libart.so (art_quick_generic_jni_trampoline+144)
#02 pc 000000000054ab88 /system/lib64/libart.so (art_quick_invoke_stub+584)
#03 pc 00000000000dc594 /system/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+204)
#04 pc 000000000029b49c /system/lib64/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+344)
#05 pc 0000000000295a90 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+700)
#06 pc 0000000000533d68 /system/lib64/libart.so (MterpInvokeDirect+356)
#07 pc 000000000053ca14 /system/lib64/libart.so (ExecuteMterpImpl+14484)
#08 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#09 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#10 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#11 pc 0000000000532ad8 /system/lib64/libart.so (MterpInvokeVirtual+652)
#12 pc 000000000053c914 /system/lib64/libart.so (ExecuteMterpImpl+14228)
#13 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#14 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#15 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#16 pc 0000000000533d68 /system/lib64/libart.so (MterpInvokeDirect+356)
#17 pc 000000000053ca14 /system/lib64/libart.so (ExecuteMterpImpl+14484)
#18 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#19 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#20 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#21 pc 0000000000533d68 /system/lib64/libart.so (MterpInvokeDirect+356)
#22 pc 000000000053ca14 /system/lib64/libart.so (ExecuteMterpImpl+14484)
#23 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#24 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#25 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#26 pc 0000000000532ad8 /system/lib64/libart.so (MterpInvokeVirtual+652)
#27 pc 000000000053c914 /system/lib64/libart.so (ExecuteMterpImpl+14228)
#28 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#29 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#30 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#31 pc 0000000000533ab8 /system/lib64/libart.so (MterpInvokeInterface+1576)
#32 pc 000000000053cb14 /system/lib64/libart.so (ExecuteMterpImpl+14740)
#33 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#34 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#35 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#36 pc 0000000000532ad8 /system/lib64/libart.so (MterpInvokeVirtual+652)
#37 pc 000000000053c914 /system/lib64/libart.so (ExecuteMterpImpl+14228)
#38 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#39 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
04-10 15:40:13.169 10208-10208/? A/DEBUG: #40 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#41 pc 0000000000532ad8 /system/lib64/libart.so (MterpInvokeVirtual+652)
#42 pc 000000000053c914 /system/lib64/libart.so (ExecuteMterpImpl+14228)
#43 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#44 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#45 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#46 pc 0000000000533d68 /system/lib64/libart.so (MterpInvokeDirect+356)
#47 pc 000000000053ca14 /system/lib64/libart.so (ExecuteMterpImpl+14484)
#48 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#49 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#50 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#51 pc 0000000000532ad8 /system/lib64/libart.so (MterpInvokeVirtual+652)
#52 pc 000000000053c914 /system/lib64/libart.so (ExecuteMterpImpl+14228)
#53 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#54 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#55 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#56 pc 0000000000532ad8 /system/lib64/libart.so (MterpInvokeVirtual+652)
#57 pc 000000000053c914 /system/lib64/libart.so (ExecuteMterpImpl+14228)
#58 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
#59 pc 000000000027b7cc /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame*, art::JValue*)+216)
#60 pc 0000000000295a70 /system/lib64/libart.so (_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_11InstructionEtPNS_6JValueE+668)
#61 pc 0000000000532ad8 /system/lib64/libart.so (MterpInvokeVirtual+652)
#62 pc 000000000053c914 /system/lib64/libart.so (ExecuteMterpImpl+14228)
#63 pc 0000000000275c00 /system/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue, bool)+444)
您应该首先检查本机对等连接是否正确初始化，因为非空 Java 对象 PeerConnetion 不返回任何 mather 的奇怪情况，无论本机对等连接是否正确初始化。例如，如果您尝试将最新的 webrtc 库与旧 webrtc 提供的 stun/turn 服务器一起使用，则会出现此问题。在这种情况下，当您尝试将任何内容(DataChannel，VideoTrack，AudioTrack等(附加到peerConnection对象时，您将获得此本机空指针。
在使用之前检查您的 nativePeerConnection：
if(0 == localPeer.getNativePeerConnection()) {
Log.e("oops", "Illegal PeerConnection object. Something wrong in construction of native peerConnection.");
}