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ipodderx-core/khashmir/const.py

66 lines
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Python

# The contents of this file are subject to the BitTorrent Open Source License
# Version 1.1 (the License). You may not copy or use this file, in either
# source code or executable form, except in compliance with the License. You
# may obtain a copy of the License at http://www.bittorrent.com/license/.
#
# Software distributed under the License is distributed on an AS IS basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
# magic id to use before we know a peer's id
NULL_ID = 20 * '\0'
# Kademlia "K" constant, this should be an even number
K = 8
# SHA1 is 160 bits long
HASH_LENGTH = 160
# checkpoint every this many seconds
CHECKPOINT_INTERVAL = 60 * 5 # five minutes
# how often to find our own nodes
FIND_CLOSE_INTERVAL = 60 * 15 # fifteen minutes
### SEARCHING/STORING
# concurrent krpc calls per find node/value request!
CONCURRENT_REQS = K
# how many hosts to post to
STORE_REDUNDANCY = 3
### ROUTING TABLE STUFF
# how many times in a row a node can fail to respond before it's booted from the routing table
MAX_FAILURES = 3
# never ping a node more often than this
MIN_PING_INTERVAL = 60 * 15 # fifteen minutes
# refresh buckets that haven't been touched in this long
BUCKET_STALENESS = 60 * 15 # fifteen minutes
### KEY EXPIRER
# time before expirer starts running
KEINITIAL_DELAY = 15 # 15 seconds - to clean out old stuff in persistent db
# time between expirer runs
KE_DELAY = 60 * 5 # 5 minutes
# expire entries older than this
KE_AGE = 60 * 30 # 30 minutes
## krpc
KRPC_TIMEOUT = 20
KRPC_ERROR = 1
KRPC_ERROR_METHOD_UNKNOWN = 2
KRPC_ERROR_RECEIVED_UNKNOWN = 3
KRPC_ERROR_TIMEOUT = 4
KRPC_SOCKET_ERROR = 5
KRPC_CONNECTION_CACHE_TIME = KRPC_TIMEOUT * 2