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NBXplorer periodically disconnecting from bitcoind

See original GitHub issue

After an update to the latest version NBXplorer keeps disconnecting and reconnecting to Bitcoind.

Steps to reproduce:

Setup regtest instance with NBXplorer
Mine 101 blocks
Wait and see logs
Optionally check /v1/cryptos/btc/status in a loop with 1-second sleep

Expected behavior

NBXplorer connects once and stays connected. After initial sync it keeps reporting fully synced

Actual behavior

NBXplorer disconnects and resyncs ~every second

Log

Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Height: 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Handshaked node
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Current Index Progress not found, start syncing from the header's chain tip (At height: 101)
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Starting scan at block 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NotStarted => NBXplorerSynching
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NBXplorerSynching => Ready
Nov 11 13:49:20 disp9630 nbxplorer[7276]: fail: Explorer:       BTC: Connection unexpectedly failed: Unexpected exception while connecting to socket
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: Ready => NotStarted
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Testing RPC connection to http://127.0.0.1:18443/
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: RPC connection successful
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Full node version detected: 210100
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Loading chain from cache...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Height: 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Trying to connect via the P2P protocol to trusted node (127.0.0.1:18444)...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: TCP Connection succeed, handshaking...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Handshaked
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Loading chain from node
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Loading chain...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Chain loaded
Nov 11 13:49:20 disp9630 nbxplorer[7276]: warn: Explorer:       BTC: Your NBXplorer server is not whitelisted by your node, you should add "whitelist=127.0.0.1" to the configuration file of your node. (Or use whitebind)
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Height: 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Handshaked node
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Current Index Progress not found, start syncing from the header's chain tip (At height: 101)
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Starting scan at block 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: fail: Explorer:       BTC: Connection unexpectedly failed: Unexpected exception while connecting to socket
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NotStarted => NBXplorerSynching
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NBXplorerSynching => NotStarted
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Testing RPC connection to http://127.0.0.1:18443/
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: RPC connection successful
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Full node version detected: 210100
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Loading chain from cache...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Height: 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Trying to connect via the P2P protocol to trusted node (127.0.0.1:18444)...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: TCP Connection succeed, handshaking...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Handshaked
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Loading chain from node
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Loading chain...
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Chain loaded
Nov 11 13:49:20 disp9630 nbxplorer[7276]: warn: Explorer:       BTC: Your NBXplorer server is not whitelisted by your node, you should add "whitelist=127.0.0.1" to the configuration file of your node. (Or use whitebind)
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Height: 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Handshaked node
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Current Index Progress not found, start syncing from the header's chain tip (At height: 101)
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Starting scan at block 101
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NotStarted => NBXplorerSynching
Nov 11 13:49:20 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NBXplorerSynching => Ready
Nov 11 13:49:21 disp9630 nbxplorer[7276]: fail: Explorer:       BTC: Connection unexpectedly failed: Unexpected exception while connecting to socket
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: Ready => NotStarted
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Testing RPC connection to http://127.0.0.1:18443/
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: RPC connection successful
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Full node version detected: 210100
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Loading chain from cache...
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Height: 101
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Trying to connect via the P2P protocol to trusted node (127.0.0.1:18444)...
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Explorer:       BTC: TCP Connection succeed, handshaking...
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Handshaked
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Loading chain from node
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Loading chain...
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Chain loaded
Nov 11 13:49:21 disp9630 nbxplorer[7276]: warn: Explorer:       BTC: Your NBXplorer server is not whitelisted by your node, you should add "whitelist=127.0.0.1" to the configuration file of your node. (Or use whitebind)
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Configuration:  BTC: Height: 101
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Handshaked node
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Current Index Progress not found, start syncing from the header's chain tip (At height: 101)
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Explorer:       BTC: Starting scan at block 101
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NotStarted => NBXplorerSynching
Nov 11 13:49:21 disp9630 nbxplorer[7276]: info: Events:         BTC: Node state changed: NBXplorerSynching => Ready

Last known working version: ~~2.1.58~~ I managed to bisect it. It works in 2.2.4 and breaks in 2.2.5

Issue Analytics

State:
Created 2 years ago
Comments:12 (9 by maintainers)

Top GitHub Comments

1reaction

NicolasDoriercommented, Apr 25, 2022

@farukterzioglu whitelisting is not only required for mempool, but to prevent your NBXplorer stop suddenly working. If your node isn’t whitelisted bitcoin core is free to kick you out anytime. (and it does) I could not issue mempool command if not whitelisted, but this is just a time bomb.

1reaction

farukterzioglucommented, Mar 6, 2022

@NicolasDorier It looks like whitelisting is no longer optional. As you can see from this diff: https://github.com/dgarage/NBXplorer/compare/v2.2.4...v2.2.5 mempool request has been added and bitcoin node requires whitelisting for mempool requests as mentioned in #344

When I try to connect to a node (regtest) without whitelist it never connects and tries in an endless loop. At the same time when I check the bitcoin node I can see it disconnects (repeatedly) NBXplorer because of misbehavior: mempool request with bloom filters

and NBxplorer is being stuck like this;

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