Data channels closing / crashing

[stserakhau]

Hi all,

Case: transmission multiple files via datachannel

1. Open datachannel per file transmission
2. Split file to the chunks (15kb) and transmit in parralel (with receiving acceptance per each chunk from receiver)
3. After receiving confirmation or by transmission timeout - close data channel

Additional details:

1. Some time I catching not controlled closing the peer connection, some time i see the crash of the java aplication without any additional information in the logs.
2. High probability to catch the crash on slow connection with the peer
3. High probability to catch the crash when do the sending of the large amount of the data in parallel (may be uncatched exception with overflow of the internal buffer in native lib of webrtc, os or something else)