the arduino IDE debug
File name Size
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recording.wav 163884 bytes
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===> Upload FILE to python flask Server
recording.wav
163884
[ 9396][D][HTTPClient.cpp:293] beginInternal(): protocol: http, host: 192.168.1.112 port: 5000 url: /upload
[ 9558][D][HTTPClient.cpp:574] sendRequest(): request type: 'POST' redirCount: 0
[ 9781][D][HTTPClient.cpp:1112] connect(): connected to 192.168.1.112:5000
[ 11065][D][HTTPClient.cpp:1257] handleHeaderResponse(): code: 400
[ 11071][D][HTTPClient.cpp:1260] handleHeaderResponse(): size: 167
[ 11077][D][HTTPClient.cpp:618] sendRequest(): sendRequest code=400
httpResponseCode : 400
Error
[ 11084][D][HTTPClient.cpp:373] disconnect(): still data in buffer (167), clean up.
[ 11094][D][HTTPClient.cpp:380] disconnect(): tcp stop