Optional storing of expired and off-stream objects

- a new config file option, network/acceptmismatch, allows the inventory
to store objects that expired or are from a stream we're not
interested in. Having this on will prevent re-requesting objects that
other nodes incorrectly advertise. It defaults to false

src/bmconfigparser.py

@@ -21,6 +21,7 @@
     },
     "inventory": {
         "storage": "sqlite",
+        "acceptmismatch": False,
     },
     "zlib": {
         'maxsize': 1048576

src/network/bmproto.py

@@ -5,8 +5,6 @@
 import time
 import socket
 import struct
-import random
-import traceback
 
 from addresses import calculateInventoryHash
 from debug import logger
@@ -278,8 +276,16 @@ def bm_command_object(self):
             raise BMProtoExcessiveDataError()
 
         self.object.checkProofOfWorkSufficient()
-        self.object.checkEOLSanity()
-        self.object.checkStream()
+        try:
+            self.object.checkEOLSanity()
+        except BMObjectExpiredError:
+            if not BMConfigParser().get("inventory", "acceptmismatch"):
+                raise
+        try:
+            self.object.checkStream()
+        except BMObjectUnwantedStreamError:
+            if not BMConfigParser().get("inventory", "acceptmismatch"):
+                raise
         self.object.checkAlreadyHave()
 
         if self.object.objectType == protocol.OBJECT_GETPUBKEY:
@@ -448,9 +454,7 @@ def assembleAddr(peerList):
     def handle_close(self, reason=None):
         self.set_state("close")
         if reason is None:
-            #logger.debug("%s:%i: closing, %s", self.destination.host, self.destination.port, ''.join(traceback.format_stack()))
             logger.debug("%s:%i: closing", self.destination.host, self.destination.port)
-            #traceback.print_stack()
         else:
             logger.debug("%s:%i: closing, %s", self.destination.host, self.destination.port, reason)
         AdvancedDispatcher.handle_close(self)