Add option to handle pbufs instead of buffers

src/AsyncTCP.cpp

@@ -352,6 +352,8 @@ AsyncClient::AsyncClient(tcp_pcb* pcb)
 , _error_cb_arg(0)
 , _recv_cb(0)
 , _recv_cb_arg(0)
+, _pb_cb(0)
+, _pb_cb_arg(0)
 , _timeout_cb(0)
 , _timeout_cb_arg(0)
 , _pcb_busy(false)
@@ -504,16 +506,20 @@ int8_t AsyncClient::_recv(tcp_pcb* pcb, pbuf* pb, int8_t err) {
         //Serial.write((const uint8_t *)pb->payload, pb->len);
         _ack_pcb = true;
         pbuf *b = pb;
+        pb = b->next;
+        b->next = NULL;
+        if(_pb_cb){
+            _pb_cb(_pb_cb_arg, this, b);
+        } else {
             if(_recv_cb)
                 _recv_cb(_recv_cb_arg, this, b->payload, b->len);
             if(!_ack_pcb)
                 _rx_ack_len += b->len;
             else
                 _tcp_recved(pcb, b->len);
-        pb = b->next;
-        b->next = NULL;
             pbuf_free(b);
         }
+    }
     return ERR_OK;
 }
 
@@ -814,6 +820,14 @@ bool AsyncClient::canSend(){
     return space() > 0;
 }
 
+void AsyncClient::ackPacket(struct pbuf * pb){
+  if(!pb){
+    return;
+  }
+  _tcp_recved(_pcb, pb->len);
+  pbuf_free(pb);
+}
+
 
 // Callback Setters
 
@@ -842,6 +856,11 @@ void AsyncClient::onData(AcDataHandler cb, void* arg){
     _recv_cb_arg = arg;
 }
 
+void AsyncClient::onPacket(AcPacketHandler cb, void* arg){
+  _pb_cb = cb;
+  _pb_cb_arg = arg;
+}
+
 void AsyncClient::onTimeout(AcTimeoutHandler cb, void* arg){
     _timeout_cb = cb;
     _timeout_cb_arg = arg;

src/AsyncTCP.h

@@ -25,7 +25,8 @@
 #include "IPAddress.h"
 #include <functional>
 extern "C" {
-#include "freertos/semphr.h"
+    #include "freertos/semphr.h"
+    #include "lwip/pbuf.h"
 }
 
 class AsyncClient;
@@ -38,10 +39,10 @@ typedef std::function<void(void*, AsyncClient*)> AcConnectHandler;
 typedef std::function<void(void*, AsyncClient*, size_t len, uint32_t time)> AcAckHandler;
 typedef std::function<void(void*, AsyncClient*, int8_t error)> AcErrorHandler;
 typedef std::function<void(void*, AsyncClient*, void *data, size_t len)> AcDataHandler;
+typedef std::function<void(void*, AsyncClient*, struct pbuf *pb)> AcPacketHandler;
 typedef std::function<void(void*, AsyncClient*, uint32_t time)> AcTimeoutHandler;
 
 struct tcp_pcb;
-struct pbuf;
 struct _ip_addr;
 
 class AsyncClient {
@@ -58,6 +59,8 @@ class AsyncClient {
     void* _error_cb_arg;
     AcDataHandler _recv_cb;
     void* _recv_cb_arg;
+    AcPacketHandler _pb_cb;
+    void* _pb_cb_arg;
     AcTimeoutHandler _timeout_cb;
     void* _timeout_cb_arg;
     AcConnectHandler _poll_cb;
@@ -141,10 +144,13 @@ class AsyncClient {
     void onDisconnect(AcConnectHandler cb, void* arg = 0);  //disconnected
     void onAck(AcAckHandler cb, void* arg = 0);             //ack received
     void onError(AcErrorHandler cb, void* arg = 0);         //unsuccessful connect or error
-    void onData(AcDataHandler cb, void* arg = 0);           //data received
+    void onData(AcDataHandler cb, void* arg = 0);           //data received (called if onPacket is not used)
+    void onPacket(AcPacketHandler cb, void* arg = 0);       //data received
     void onTimeout(AcTimeoutHandler cb, void* arg = 0);     //ack timeout
     void onPoll(AcConnectHandler cb, void* arg = 0);        //every 125ms when connected
 
+    void ackPacket(struct pbuf * pb);
+
     const char * errorToString(int8_t error);
     const char * stateToString();