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SocketWrapper MbedClient read() fixes #896
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Merged
facchinm
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JAndrassy:mbedclient_read_stopped_crash_fix
Jun 19, 2024
Merged
SocketWrapper MbedClient read() fixes #896
facchinm
merged 1 commit into
arduino:main
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JAndrassy:mbedclient_read_stopped_crash_fix
Jun 19, 2024
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Merged, thanks!
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this PR for SocketWrapper's MbedClient fixes crash when invoking read() on stopped client
btw. I am very surprised that read(buff, size) should return -1 if no data are available and 0 if the connection is closed. this is how it is in the documentation and in Ethernet library implementation. and apparently this is how it is in BSD sockets. it is very strange for me.
WiFi101 and Portenta Core's lwipClient return -1 too if no bytes are available
WiFiNINA, WiFiS3, esp8266, esp32 return 0 from read(buff, size) if no data are available
a complete research: https://github.com/Networking-for-Arduino/Arduino-Networking-API/blob/main/ArduinoNetAPILibs.md#clientreadbuff-size-return-value