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Fix 10 second delay in WiFiClient read methods when no data is available to read #458

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Merged
andreagilardoni merged 2 commits into from
Mar 18, 2025
Merged

Fix 10 second delay in WiFiClient read methods when no data is available to read #458

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240388e
Do not attempt to read fixed sized result data when indicated length …
mgcookson Mar 17, 2025
f048f7f
Improve code readability
mgcookson Mar 18, 2025
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Improve code readability
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@mgcookson
mgcookson authored Mar 18, 2025
commit f048f7f439ff4051152c1ab96819a557c34dd2ae
8 changes: 4 additions & 4 deletions libraries/WiFiS3/src/Modem.cpp
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Expand Up @@ -289,16 +289,16 @@ ModemClass::ParseResult ModemClass::buf_read(const string &prompt, string &data_
* in case multiple parameters separated by ',' are sent, they will be present in data_res
* - if we encounter <CR> we need to wait for <LF>
* - if we encounter <LF> we need to parse the response status
* - if we encounter '|', the next token will contain binary sized data, the current value in
* - if we encounter '|', the next token will contain binary sized data, the current value
* in data_res contains the length of the next token
*/

if(c == '|') { // sized read, the previous parameter is the length
state = at_parse_state_t::Sized;

sized_read_size = atoi(data_res.c_str());
data_res.clear();
if (sized_read_size == 0) {
if (sized_read_size != 0) {
state = at_parse_state_t::Sized;
} else {
state = at_parse_state_t::Res;
}
} else if(c == '\r') {
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