Has Occured TypeError in STT Real-Time Recognition.

[yuyaito]

We discover to have occured TypeError in STT real-time recognition, and disconnect websocket connection. Error logs as below.

TypeError - [82, 73, 70, 70, 32, 64, 1, 0, 87, 65, 86, 69, 102, 109, 116, 32, 16, 0, 0, 0, 1, 0, 1, 0, 68, 172, 0, 0, 136, 88, 1, 0, 2, 0, 16, 0, 100, 97, 116, 97, 0, 64, 1, 0, 0, 0, 0, ... 0, 0, 0] is not a symbol nor a string]: 
/home/centos/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/ibm_watson-0.10.0/lib/ibm_watson/websocket/speech_to_text_websocket_listener.rb:156:in `send_chunk' | /home/centos/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/ibm_watson-0.10.0/lib/ibm_watson/websocket/speech_to_text_websocket_listener.rb:119:in `send_audio' | /home/centos/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/ibm_watson-0.10.0/lib/ibm_watson/websocket/speech_to_text_websocket_listener.rb:136:in `block in send_audio' | /home/centos/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/eventmachine-1.2.7/lib/eventmachine.rb:195:in `run_machine' | /home/centos/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/eventmachine-1.2.7/lib/eventmachine.rb:195:in `run'

Please research its issue.

[mamoonraja]

HI, thanks for opening the issue, we are looking into STT WebSocket related issues right now, and we are targeting patch fix by the end of next week.

[germanattanasio]

Please provide a set of reproducible steps.

[mamoonraja]

@yuyaito I am looking into WebSocket related issues, can you please provide more info on this issue as mentioned by @germanattanasio

[yuyaito]

Thank you for your confirmation.
Steps to reproduce as below.

1. Modify ruby SDK as below.
   ibm_watson/websocket/speech_to_text_websocket_listener.rb l71

# before
EM.stop_event_loop
# after
EM.stop_event_loop if EM.present? && EM.connection_count <= 1

ibm_watson/websocket/speech_to_text_websocket_listener.rb l78

# before
EM&.reactor_thread&.join
# after
# EM&.reactor_thread&.join

ibm_watson/websocket/speech_to_text_websocket_listener.rb l158

# before
@bytes_sent += chunk.size
@client.send(chunk.bytes)
@client.send({ "action" => "stop" }.to_json) if final
@timer.cancel if @timer.respond_to?(:cancel) && final
# after
begin
  @bytes_sent += chunk.size
  @client.send(chunk.bytes)
  @client.send({ "action" => "stop" }.to_json) if final
  @timer.cancel if @timer.respond_to?(:cancel) && final
rescue => error
  Rails.logger.error("send_chunk_error: #{error.message}, #{error.backtrace_locations.inspect}")
  @callback.on_error(error: error)
end

2. Open one or more websocket connection with Watson STT, and run real-time recognition several tens of minutes.

3. (sorry don't know the cause) occured its typeerror.

[yuyaito]

Please answer the question about this issue.

Q1. Please tell me the progress for this issue.

Q2. Could you understand the reason of problem?

Q3. When is the release for fix this issue?

[mamoonraja]

Hi @yuyaito, We are investigating issues related to STT WebSocket and we are planning to have a patch out by the end of this month, and we are tracking work here.

[mamoonraja]

@yuyaito What's the reason behind modifying the SDK code as you mentioned in #50 (comment).

[EikiWakamatsu]

I will reply instead of Mr. yuyaito

I modified the library to allow multiple connections for Issue #39 .

#EM&.reactor_thread&.join

This error now occurs.

[mamoonraja]

@EikiWakamatsu Why are you commenting the line out? Please try this example snippet.

[EikiWakamatsu]

@mamoonraja
When run according to the example, the connection was successful.
Thank you.

[mamoonraja]

@EikiWakamatsu Thanks for the confirmation!