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Fixes #4435 - WiFiClient improperly treats zero data available for read as an error (#4448)

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M Hotchin
2020-10-27 03:01:41 -07:00
committed by GitHub
parent 1287c52933
commit 7e40de226f
1 changed files with 4 additions and 1 deletions
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5
libraries/WiFi/src/WiFiClient.cpp
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@ -105,7 +105,7 @@ public:
int read(uint8_t * dst, size_t len){ int read(uint8_t * dst, size_t len){
if(!dst || !len || (_pos == _fill && !fillBuffer())){ if(!dst || !len || (_pos == _fill && !fillBuffer())){
return -1; return _failed ? -1 : 0;
} }
size_t a = _fill - _pos; size_t a = _fill - _pos;
if(len <= a || ((len - a) <= (_size - _fill) && fillBuffer() >= (len - a))){ if(len <= a || ((len - a) <= (_size - _fill) && fillBuffer() >= (len - a))){
@ -346,6 +346,9 @@ int WiFiClient::read()
if(res < 0) { if(res < 0) {
return res; return res;
} }
if (res == 0) { // No data available.
return -1;
}
return data; return data;
} }