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Implements fix described in https://github.com/knolleary/pubsubclient/issues/832 #8

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Implements fix described in https://github.com/knolleary/pubsubclient/issues/832 #8

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1 change: 1 addition & 0 deletions src/PubSubClient.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -395,6 +395,7 @@ boolean PubSubClient::loop() {
if (type == MQTTPUBLISH) {
if (callback) {
uint16_t tl = (this->buffer[llen+1]<<8)+this->buffer[llen+2]; /* topic length in bytes */
if(!(tl < bufferSize)) return false;
memmove(this->buffer+llen+2,this->buffer+llen+3,tl); /* move topic inside buffer 1 byte to front */
this->buffer[llen+2+tl] = 0; /* end the topic as a 'C' string with \x00 */
char *topic = (char*) this->buffer+llen+2;
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