-
Notifications
You must be signed in to change notification settings - Fork 37.8k
Allow NODE_BLOOM services for whitelisted peers #16176
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Allow NODE_BLOOM services for whitelisted peers #16176
Conversation
This was attempted previously in #8587 I think this comment: #8587 (comment) still stands. We should try to reduce the overloading of |
So what about |
I tend to agree. Do you have a specific use-case for this @NicolasDorier ? |
@laanwj yes I have. BTCPay Server is exposing a the full node via a whitebound connection behind a Torv3 hidden service, so the whitebind interface can't be discovered. I want to make a simple light wallet connecting to this hosted full node (or just slightly modifying Breadwallet to support Tor). BIP157/full blocks are bad because it consumes lot's of bandwidth. However, I don't want to expose NODE_BLOOM services to node which are not whitelisted because of DDoS concerns. BIP37 is a fine protocol, just terrible privacy wise and as a DDoS vector. But for connecting to your light wallet to your trusted node, this is the best thing in town. |
What is wrong with a new option |
See also:
|
@MarcoFalke I am using whitebind... |
We could duplicate both whitebind/whitelist but I think this is not really useful. |
I do think there is a usecase to offer a peer bloom filter, but not re-relay their consensus invalid transactions. |
I think adding a [flags] per whitelist range (both per bind and per IP range) would be more general, and less cluttering than duplicating the option. It's also much more flexible than changing the meaning of whitelist throughout the entire daemon. |
So yeah. Concept ACK. Approach NACK. |
I agree. So basically you would Concept ACK for a Said in another way, is there a scenario where you would like to whitelist a peer, but not let him get bloom filters? |
I think @laanwj suggested to use |
Yes, ideally I'd like a extensible, flexible mechanism for whitelisting (a set of) peers for special things, instead of a single amorphous "whitelist". |
@laanwj I think this is a good idea. But still, "the amorphous whitelist" is very useful, please do not remove it, its consequence are very clear: Consider what is whitelisted as friendly (ie, does not want to deanonymise us, or DDoS us) The fine grained options should be reserved for more specific use case. If we keep amorphous whitelist/whitebind, then it makes sense to allow Bloom filters for them: What good reason there would be to no allow bloom filter to a friend? For transaction relay, there is clear good reason: This friend likely does not validate himself the transaction, so we need to validate for him. But for bloom filter? |
Concept ACK. Could consider "whitelisting" to take a pair of information: the node(s) to whitelist and what to whitelist them for, with the latter having some default value. Writing |
@ajtowns I like your format Syntax being: |
Sounds good to me! Nice to fit it into something compatible with the current format. |
Closing in favor of #16248 |
The PR there is finally ready to be reviewed for those interested. |
c5b404e Add functional tests for flexible whitebind/list (nicolas.dorier) d541fa3 Replace the use of fWhitelisted by permission checks (nicolas.dorier) ecd5cf7 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) e5b26de Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK c5b404e Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
14bdcd3 Add functional tests for flexible whitebind/list (nicolas.dorier) 33d7c65 Replace the use of fWhitelisted by permission checks (nicolas.dorier) c98ddf1 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) 1467e02 Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](bitcoin/bitcoin#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](bitcoin/bitcoin#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK 14bdcd3 Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
c5b404e Add functional tests for flexible whitebind/list (nicolas.dorier) d541fa3 Replace the use of fWhitelisted by permission checks (nicolas.dorier) ecd5cf7 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) e5b26de Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](bitcoin#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](bitcoin#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK c5b404e Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
c5b404e Add functional tests for flexible whitebind/list (nicolas.dorier) d541fa3 Replace the use of fWhitelisted by permission checks (nicolas.dorier) ecd5cf7 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) e5b26de Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](bitcoin#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](bitcoin#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK c5b404e Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
c5b404e Add functional tests for flexible whitebind/list (nicolas.dorier) d541fa3 Replace the use of fWhitelisted by permission checks (nicolas.dorier) ecd5cf7 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) e5b26de Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](bitcoin#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](bitcoin#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK c5b404e Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
c5b404e Add functional tests for flexible whitebind/list (nicolas.dorier) d541fa3 Replace the use of fWhitelisted by permission checks (nicolas.dorier) ecd5cf7 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) e5b26de Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](bitcoin#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](bitcoin#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK c5b404e Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
c5b404e Add functional tests for flexible whitebind/list (nicolas.dorier) d541fa3 Replace the use of fWhitelisted by permission checks (nicolas.dorier) ecd5cf7 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) e5b26de Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](bitcoin#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](bitcoin#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK c5b404e Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
c5b404e Add functional tests for flexible whitebind/list (nicolas.dorier) d541fa3 Replace the use of fWhitelisted by permission checks (nicolas.dorier) ecd5cf7 Do not disconnect peer for asking mempool if it has NO_BAN permission (nicolas.dorier) e5b26de Make whitebind/whitelist permissions more flexible (nicolas.dorier) Pull request description: # Motivation In 0.19, bloom filter will be disabled by default. I tried to make [a PR](bitcoin#16176) to enable bloom filter for whitelisted peers regardless of `-peerbloomfilters`. Bloom filter have non existent privacy and server can omit filter's matches. However, both problems are completely irrelevant when you connect to your own node. If you connect to your own node, bloom filters are the most bandwidth efficient way to synchronize your light client without the need of some middleware like Electrum. It is also a superior alternative to BIP157 as it does not require to maintain an additional index and it would work well on pruned nodes. When I attempted to allow bloom filters for whitelisted peer, my proposal has been NACKed in favor of [a more flexible approach](bitcoin#16176 (comment)) which should allow node operator to set fine grained permissions instead of a global `whitelisted` attribute. Doing so will also make follow up idea very easy to implement in a backward compatible way. # Implementation details The PR propose a new format for `--white{list,bind}`. I added a way to specify permissions granted to inbound connection matching `white{list,bind}`. The following permissions exists: * ForceRelay * Relay * NoBan * BloomFilter * Mempool Example: * `-whitelist=bloomfilter@127.0.0.1/32`. * `-whitebind=bloomfilter,relay,noban@127.0.0.1:10020`. If no permissions are specified, `NoBan | Mempool` is assumed. (making this PR backward compatible) When we receive an inbound connection, we calculate the effective permissions for this peer by fetching the permissions granted from `whitelist` and add to it the permissions granted from `whitebind`. To keep backward compatibility, if no permissions are specified in `white{list,bind}` (e.g. `--whitelist=127.0.0.1`) then parameters `-whitelistforcerelay` and `-whiterelay` will add the permissions `ForceRelay` and `Relay` to the inbound node. `-whitelistforcerelay` and `-whiterelay` are ignored if the permissions flags are explicitly set in `white{bind,list}`. # Follow up idea Based on this PR, other changes become quite easy to code in a trivially review-able, backward compatible way: * Changing `connect` at rpc and config file level to understand the permissions flags. * Changing the permissions of a peer at RPC level. ACKs for top commit: laanwj: re-ACK c5b404e Tree-SHA512: adfefb373d09e68cae401247c8fc64034e305694cdef104bdcdacb9f1704277bd53b18f52a2427a5cffdbc77bda410d221aed252bc2ece698ffbb9cf1b830577
As mentioned here, I believe that there should be no reason to not support bloom filter for whitelisted peers.
There is no protocol more efficient than this, working as well in pruned mode to sync a light client from your own full node without the need of some middleware like Electrum.
Even BIP157 comes short for this usecase as it needlessly waste bandwidth. (and I think BIP157, as implemented now does not work in pruned mode -might be wrong here-)