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fix issue with compressed pointer (issue 4648) (#4752)

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This commit is contained in:
Mike Morrison 2018-06-07 09:31:49 -07:00 committed by Develo
parent 73d36bbc80
commit ea4720b03e
1 changed files with 2 additions and 1 deletions
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3
libraries/ESP8266mDNS/ESP8266mDNS.cpp
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@ -551,7 +551,8 @@ void MDNSResponder::_parsePacket(){
if (tmp8 & 0xC0) { // Compressed pointer if (tmp8 & 0xC0) { // Compressed pointer
uint16_t offset = ((((uint16_t)tmp8) & ~0xC0) << 8) | _conn_read8(); uint16_t offset = ((((uint16_t)tmp8) & ~0xC0) << 8) | _conn_read8();
if (_conn->isValidOffset(offset)) { if (_conn->isValidOffset(offset)) {
last_bufferpos = _conn->tell(); if (0 == last_bufferpos)
last_bufferpos = _conn->tell();
#ifdef DEBUG_ESP_MDNS_RX #ifdef DEBUG_ESP_MDNS_RX
DEBUG_ESP_PORT.print("Compressed pointer, jumping from "); DEBUG_ESP_PORT.print("Compressed pointer, jumping from ");
DEBUG_ESP_PORT.print(last_bufferpos); DEBUG_ESP_PORT.print(last_bufferpos);