TCP performance improvements

README.md

@@ -55,7 +55,7 @@ Some countries still ban the use of encryption when operating under an amateur r
  - pyserial
 
 ## How do I get started?
-Full documentation and video tutorials are coming with the stable alpha release. Until then, you are mostly on your own. If you really want to experiment already, you could take a look in the "Examples" folder, for some well-documented example programs. Be sure to also read the [Reticulum Overview Document](http://unsigned.io/wp-content/uploads/2018/04/Reticulum_Overview_v0.4.pdf).
+Full documentation and video tutorials are coming with the stable alpha release. Until then, you are mostly on your own. If you really want to experiment already, you could take a look in the "Examples" folder, for some well-documented example programs. The default configuration file created by Reticulum on the first run is also worth reading. Be sure to also read the [Reticulum Overview Document](http://unsigned.io/wp-content/uploads/2018/04/Reticulum_Overview_v0.4.pdf).
 
 If you just need Reticulum as a dependency for another application, the easiest way is probably via pip:
 

RNS/Interfaces/TCPInterface.py

@@ -78,10 +78,13 @@ class TCPClientInterface(Interface):
             data_buffer = b""
 
             while True:
-                data_in = self.socket.recv(1)
+                data_in = self.socket.recv(1024)
 
                 if len(data_in) > 0:
-                    byte = ord(data_in)
+                    pointer = 0
+                    while pointer < len(data_in):
+                        byte = data_in[pointer]
+                        pointer += 1
                         if (in_frame and byte == HDLC.FLAG):
                             in_frame = False
                             self.processIncoming(data_buffer)
@@ -108,9 +111,8 @@ class TCPClientInterface(Interface):
         except Exception as e:
             self.online = False
             RNS.log("An interface error occurred, the contained exception was: "+str(e), RNS.LOG_ERROR)
-            RNS.log("The interface "+str(self.name)+" is now offline. Restart Reticulum to attempt reconnection.", RNS.LOG_ERROR)
-            raise e
-
+            RNS.log("Tearing down "+str(self), RNS.LOG_ERROR)
+            self.teardown()
 
     def teardown(self):
         self.online = False
@@ -128,8 +130,6 @@ class TCPServerInterface(Interface):
     def __init__(self, owner, name, bindip=None, bindport=None):
         self.IN  = True
         self.OUT = False
-        self.transmit_delay = 0.001
-
         self.name = name
 
         if (bindip != None and bindport != None):

RNS/Resource.py

@@ -438,6 +438,7 @@ class Resource:
 				pi = 0
 				for part in self.parts:
 					if part.map_hash == requested_hash:
+						try:
 							if not part.sent:
 								part.send()
 								self.sent_parts += 1
@@ -446,6 +447,10 @@ class Resource:
 							self.last_activity = time.time()
 							self.last_part_sent = self.last_activity
 							break
+						except Exception as e:
+							RNS.log("Resource could not send parts, cancelling transfer!", RNS.LOG_ERROR)
+							RNS.log("The contained exception was: "+str(e), RNS.LOG_ERROR)
+							self.cancel()
 					pi += 1
 
 			if wants_more_hashmap:
@@ -488,8 +493,11 @@ class Resource:
 			self.status = Resource.FAILED
 			if self.initiator:
 				if self.link.status == RNS.Link.ACTIVE:
+					try:
 						cancel_packet = RNS.Packet(self.link, self.hash, context=RNS.Packet.RESOURCE_ICL)
 						cancel_packet.send()
+					except Exception as e:
+						RNS.log("Could not send resource cancel packet, the contained exception was: "+str(e), RNS.LOG_ERROR)
 				self.link.cancel_outgoing_resource(self)
 			else:
 				self.link.cancel_incoming_resource(self)