add setter and getter for ack timeout

if set to 0 it will not timeout

Author: Me No Dev

src/ESPAsyncTCP.cpp

@@ -52,6 +52,7 @@ AsyncClient::AsyncClient(tcp_pcb* pcb):
   , _ack_pcb(true)
   , _rx_last_packet(0)
   , _rx_since_timeout(0)
+  , _ack_timeout(ASYNC_MAX_ACK_TIME)
   , _connect_port(0)
   , prev(NULL)
   , next(NULL)
@@ -306,7 +307,7 @@ int8_t AsyncClient::_poll(tcp_pcb* pcb){
   }
   uint32_t now = millis();
   // ACK Timeout
-  if(_pcb_busy && (now - _pcb_sent_at) >= ASYNC_MAX_ACK_TIME){
+  if(_pcb_busy && _ack_timeout && (now - _pcb_sent_at) >= _ack_timeout){
     _pcb_busy = false;
     if(_timeout_cb)
       _timeout_cb(_timeout_cb_arg, this, (now - _pcb_sent_at));
@@ -383,6 +384,14 @@ uint32_t AsyncClient::getRxTimeout(){
   return _rx_since_timeout;
 }
 
+uint32_t AsyncClient::getAckTimeout(){
+  return _ack_timeout;
+}
+
+void AsyncClient::setAckTimeout(uint32_t timeout){
+  _ack_timeout = timeout;
+}
+
 void AsyncClient::setNoDelay(bool nodelay){
   if(!_pcb)
     return;

src/ESPAsyncTCP.h

@@ -70,6 +70,7 @@ class AsyncClient {
     uint32_t _rx_ack_len;
     uint32_t _rx_last_packet;
     uint32_t _rx_since_timeout;
+    uint32_t _ack_timeout;
     uint16_t _connect_port;
 
     int8_t _close();
@@ -129,6 +130,8 @@ class AsyncClient {
 
     uint32_t getRxTimeout();
     void setRxTimeout(uint32_t timeout);//no RX data timeout for the connection in seconds
+    uint32_t getAckTimeout();
+    void setAckTimeout(uint32_t timeout);//no ACK timeout for the last sent packet in milliseconds
     void setNoDelay(bool nodelay);
     bool getNoDelay();
     uint32_t getRemoteAddress();