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fix #1002 ::Flush() wait for empty send buffer (#3967)

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* fix #1002 ::Flush() wait for empty send buffer

* WiFiClient::Flush() guarantees that the data has been delivered
option 1 of https://github.com/esp8266/Arduino/pull/3967#discussion_r156901071
10ms max wait according to loaded tcp echo/reply scheme
This commit is contained in:
david gauchard
2017-12-17 17:16:41 +01:00
committed by Develo
parent affd1b37b8
commit 26980b39e3
5 changed files with 30 additions and 7 deletions
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9
libraries/Ethernet/src/EthernetUdp.cpp
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@@ -118,7 +118,7 @@ size_t EthernetUDP::write(const uint8_t *buffer, size_t size)
int EthernetUDP::parsePacket()
{
// discard any remaining bytes in the last packet
flush();
clear_remaining();
if (recvAvailable(_sock) > 0)
{
@@ -204,7 +204,7 @@ int EthernetUDP::peek()
return b;
}
void EthernetUDP::flush()
void EthernetUDP::clear_remaining()
{
// could this fail (loop endlessly) if _remaining > 0 and recv in read fails?
// should only occur if recv fails after telling us the data is there, lets
@@ -216,3 +216,8 @@ void EthernetUDP::flush()
}
}
void EthernetUDP::flush()
{
endPacket();
}