SPX synthesize error ErrorCode=ConnectionFailure

Question

I am following the document here( https://learn.microsoft.com/en-us/azure/cognitive-services/speech-service/get-started-text-to-speech?tabs=script%2Clinuxinstall&pivots=programmer-tool-spx) to quick start a tts on CentOS 8.2 with Speech CLI.
When running sample command "spx synthesize --text "The speech synthesizer greets you!" --audio output greetings.wav"
I got the following error

SYNTHESIS STARTED: c88154c********************e33c80
CANCELED: Reason=Error
CANCELED: ErrorCode=ConnectionFailure
CANCELED: ErrorDetails=Connection failed (no connection to the remote host). Internal error: 1. Error details: Code: 2542. USP state: 2. Received audio size: 0 bytes.
CANCELED: Did you update the subscription info?

Please help. Thanks.

Answer 1

@Shawn Liu , Thanks for your response.

I quickly did a set up at my end (Azure Linux VM) and I was able to do observe the same issue at my end.

Ran the below command :

spx synthesize --text "Enjoy using the Speech CLI." --audio output my-sample.wav  

Output :

Checked the logs using the below command. CAT log-<Number>.log . You can do dir command to find out your log file name.

Observed the below lines in the log traces :

[787457]: 145ms SPX_TRACE_ERROR: AZ_LOG_ERROR:  tlsio_openssl.c:690 error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed  
[787457]: 145ms SPX_TRACE_ERROR:  trace_message.cpp:193 Error: File:/home/vsts/work/1/s/external/azure-c-shared-utility/adapters/tlsio_openssl.c Func:send_handshake_bytes Line:690  
[787457]: 145ms SPX_TRACE_ERROR: AZ_LOG_ERROR:  tlsio_openssl.c:2433 FORCE-Closing tlsio instance.  
[787457]: 145ms SPX_TRACE_ERROR:  trace_message.cpp:193 Error: File:/home/vsts/work/1/s/external/azure-c-shared-utility/adapters/tlsio_openssl.c Func:tlsio_openssl_close Line:2433  
[787457]: 145ms SPX_TRACE_ERROR:  web_socket.cpp:874 WS open operation failed with result=1(WS_OPEN_ERROR_UNDERLYING_IO_OPEN_FAILED), code=2542[0x000009ee]  

Appeared like there was some issues with the SSL certificate verification.

Ran the below command to set SSL cert file location.

 export SSL_CERT_FILE=/etc/pki/tls/certs/ca-bundle.crt  

I was able to run the command and get output successfully :

------------------------

Please do not forget to "Accept the answer" wherever the information provided helps you. This will help others in the community as well.