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Added TCP client reconnection on TCP socket drop

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This commit is contained in:
Mark Qvist 2021-09-18 22:49:04 +02:00
parent 6362e04567
commit 65e8487b39
7 changed files with 84 additions and 8 deletions
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5
RNS/Interfaces/AX25KISSInterface.py
View File

@ -301,7 +301,10 @@ class AX25KISSInterface(Interface):
except Exception as e:
self.online = False
RNS.log("A serial port 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)
RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is being torn down. Restart Reticulum to attempt to open this interface again.", RNS.LOG_ERROR)
if RNS.Reticulum.panic_on_interface_error:
RNS.panic()
def __str__(self):
return "AX25KISSInterface["+self.name+"]"

5
RNS/Interfaces/KISSInterface.py
View File

@ -277,7 +277,10 @@ class KISSInterface(Interface):
except Exception as e:
self.online = False
RNS.log("A serial port 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)
RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is being torn down. Restart Reticulum to attempt to open this interface again.", RNS.LOG_ERROR)
if RNS.Reticulum.panic_on_interface_error:
RNS.panic()
def __str__(self):
return "KISSInterface["+self.name+"]"

4
RNS/Interfaces/LocalInterface.py
View File

@ -127,6 +127,10 @@ class LocalClientInterface(Interface):
if self in RNS.Transport.local_client_interfaces:
RNS.Transport.local_client_interfaces.remove(self)
RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is being torn down. Restart Reticulum to attempt to open this interface again.", RNS.LOG_ERROR)
if RNS.Reticulum.panic_on_interface_error:
RNS.panic()
def __str__(self):
return "LocalInterface["+str(self.target_port)+"]"

5
RNS/Interfaces/RNodeInterface.py
View File

@ -463,7 +463,10 @@ class RNodeInterface(Interface):
except Exception as e:
self.online = False
RNS.log("A serial port 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)
RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is being torn down. Restart Reticulum to attempt to open this interface again.", RNS.LOG_ERROR)
if RNS.Reticulum.panic_on_interface_error:
RNS.panic()
def __str__(self):
return "RNodeInterface["+self.name+"]"

5
RNS/Interfaces/SerialInterface.py
View File

@ -130,7 +130,10 @@ class SerialInterface(Interface):
except Exception as e:
self.online = False
RNS.log("A serial port 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)
RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is being torn down. Restart Reticulum to attempt to open this interface again.", RNS.LOG_ERROR)
if RNS.Reticulum.panic_on_interface_error:
RNS.panic()
def __str__(self):
return "SerialInterface["+self.name+"]"

54
RNS/Interfaces/TCPInterface.py
View File

@ -23,13 +23,21 @@ class ThreadingTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
pass
class TCPClientInterface(Interface):
RECONNECT_WAIT = 5
RECONNECT_MAX_TRIES = None
def __init__(self, owner, name, target_ip=None, target_port=None, connected_socket=None):
def __init__(self, owner, name, target_ip=None, target_port=None, connected_socket=None, max_reconnect_tries=None):
self.IN = True
self.OUT = False
self.socket = None
self.parent_interface = None
self.name = name
self.initiator = False
if max_reconnect_tries == None:
self.max_reconnect_tries = TCPClientInterface.RECONNECT_MAX_TRIES
else:
self.max_reconnect_tries = max_reconnect_tries
if connected_socket != None:
self.receives = True
@ -50,11 +58,43 @@ class TCPClientInterface(Interface):
self.writing = False
if connected_socket == None:
self.initiator = True
thread = threading.Thread(target=self.read_loop)
thread.setDaemon(True)
thread.start()
self.wants_tunnel = True
def reconnect(self):
if self.initiator:
attempts = 0
while not self.online:
attempts += 1
if self.max_reconnect_tries != None and attempts > self.max_reconnect_tries:
RNS.log("Max reconnection attempts reached for "+str(self), RNS.LOG_ERROR)
self.teardown()
break
try:
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.connect((self.target_ip, self.target_port))
self.online = True
self.writing = False
thread = threading.Thread(target=self.read_loop)
thread.setDaemon(True)
thread.start()
RNS.Transport.synthesize_tunnel(self)
except Exception as e:
RNS.log("Reconnection attempt for "+str(self)+" failed. The contained exception was: "+str(e), RNS.LOG_ERROR)
time.sleep(TCPClientInterface.RECONNECT_WAIT)
else:
RNS.log("Attempt to reconnect on a non-initiator TCP interface. This should not happen.", RNS.LOG_ERROR)
raise IOError("Attempt to reconnect on a non-initiator TCP interface")
def processIncoming(self, data):
self.owner.inbound(data, self)
@ -105,24 +145,30 @@ class TCPClientInterface(Interface):
escape = False
data_buffer = data_buffer+bytes([byte])
else:
RNS.log("TCP socket for "+str(self)+" was closed, tearing down interface", RNS.LOG_VERBOSE)
self.teardown()
RNS.log("TCP socket for "+str(self)+" was closed, attempting to reconnect...", RNS.LOG_WARNING)
self.online = False
if self.initiator:
self.reconnect()
break
except Exception as e:
self.online = False
RNS.log("An interface error occurred, the contained exception was: "+str(e), RNS.LOG_ERROR)
RNS.log("Tearing down "+str(self), RNS.LOG_ERROR)
self.teardown()
def teardown(self):
RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is being torn down. Restart Reticulum to attempt to open this interface again.", RNS.LOG_ERROR)
self.online = False
self.OUT = False
self.IN = False
if self in RNS.Transport.interfaces:
RNS.Transport.interfaces.remove(self)
if RNS.Reticulum.panic_on_interface_error:
RNS.panic()
def __str__(self):
return "TCPInterface["+str(self.name)+"/"+str(self.target_ip)+":"+str(self.target_port)+"]"

14
RNS/Reticulum.py
View File

@ -98,6 +98,8 @@ class Reticulum:
Reticulum.__transport_enabled = False
Reticulum.__use_implicit_proof = True
Reticulum.panic_on_interface_error = False
self.local_interface_port = 37428
self.share_instance = True
@ -195,6 +197,10 @@ class Reticulum:
v = self.config["reticulum"].as_bool(option)
if v == True:
Reticulum.__transport_enabled = True
if option == "panic_on_interface_error":
v = self.config["reticulum"].as_bool(option)
if v == True:
Reticulum.panic_on_interface_error = True
if option == "use_implicit_proof":
v = self.config["reticulum"].as_bool(option)
if v == True:
@ -510,6 +516,14 @@ share_instance = Yes
shared_instance_port = 37428
# You can configure Reticulum to panic and forcibly close
# if an unrecoverable interface error occurs, such as the
# hardware device for an interface disappearing. This is
# an optional directive, and can be left out for brevity.
# This behaviour is disabled by default.
panic_on_interface_error = No
[logging]
# Valid log levels are 0 through 7: