- 14 Mar, 2024 2 commits
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Levin Zimmermann authored
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Julien Muchembled authored
Not only for performance reasons (at least 3% faster) but also because of several ugly things in the way packets were defined: - packet field names, which are only documentary; for roots fields, they even just duplicate the packet names - a lot of repetitions for packet names, and even confusion between the name of the packet definition and the name of the actual notify/request packet - the need to implement field types for anything, like PByte to support new compression formats, since PBoolean is not enough neo/lib/protocol.py is now much smaller.
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- 02 Feb, 2024 3 commits
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Kirill Smelkov authored
* master: go/zodb: Handle common options in zurl in generic layer
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Kirill Smelkov authored
/reviewed-by @kirr /reviewed-on kirr/neo!4 * kirr/t+new-uri: Revert "Y client: Adjust URI scheme to move client-specific options to fragment" fixup! client.go: Fix URI client option parsing for supported + unsupported options client.go: Fix URI client option parsing for supported + unsupported options fixup! client_test: Add tests for NEO URI parser client_test: Add tests for NEO URI parser fixup! client: Refactor openClientByURL for easier testing client: Refactor openClientByURL for easier testing Y go/zodb: Handle common options in zurl in generic layer
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Kirill Smelkov authored
Offload drivers from handling options such as ?read-only=1 and force them to deal with such options only via DriverOptions, never zurl. See added comment for details. /reviewed-by @levin.zimmermann /reviewed-on kirr/neo!4
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- 29 Jan, 2024 8 commits
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Levin Zimmermann authored
This reverts commit kirr/neo@4c9414ea. This patch was added at a time when nexedi/neoppod!18 wasn't resolved yet, but we already wanted to proceed with WCFS. Now the NEO MR is resolved and we decided to mostly leave the NEO zurl as it was originally implemented in nexedi/neoppod!6. This means we don't need this patch anymore which changed the NEO zurl format.
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Kirill Smelkov authored
readonly is handled by common zodb.OpenDriver.
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Levin Zimmermann authored
Before this patch, the parser ignored options which were already supported by the client (for instance 'read-only') and even raised an error. But the client can already use this option: as levin.zimmermann/neoppod@a9246333 describes this should happen in the local storage URL parser. Furthermore not-yet-supported client options (for instance compress) broke the NEO client before this patch. Now these options only raise a warning which informs the user that they are ignored. Why? We want to use pre-complete NEO in real-world projects together with NEO/py clusters. Those real-world projects may already specify options which aren't supported by our NEO/go client yet. But it doesn't matters so much, because those options are mostly relevant for other NEO/py cluster clients (e.g. zope nodes). Instead of filtering those parameters before parsing them to NEO/go in a higher level (e.g. SlapOS), NEO/go should already support any valid NEO URL and raise warnings for not yet implemented features.
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Kirill Smelkov authored
- use simplified parseURL signature - DriverOptions are not passed nor changed there. - read-only is handled by generic zodb layer not neo.parseURL .
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Levin Zimmermann authored
This test was missing so far. Particularly recent changes of the NEO URI scheme [1], but also problems with valid old URI [2] stressed out the necessity for comprehensive NEO URI parser tests. [1] 4c9414ea [2] levin.zimmermann/neoppod@573514c6 (comment 184417)
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Kirill Smelkov authored
- no need to pass DriverOptions into parseURL - it is only zurl that is parsed, and also DriverOptions should not be changed by the opener. - no need to document "If anything fails within this process an error and nil are returned." because that is standard omnipresent Go convention.
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Levin Zimmermann authored
With all the recent changes of the NEO URI scheme we need to reliably test the function which parses the URI and convert it into the different parameter. Testing is much simpler if we can only analyse how the URI parsing works. Therefore this patch moves NEO URI parsing to an external function.
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Kirill Smelkov authored
Offload drivers from handling options such as ?read-only=1 and force them to deal with such options only via DriverOptions, never zurl. See added commend for details.
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- 22 Aug, 2023 1 commit
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Kirill Smelkov authored
I missed the following build failure in go/neo/cmd: # lab.nexedi.com/kirr/neo/go/neo/cmd/neo ./storage.go:128:37: cannot use master (variable of type string) as []string value in argument to neo.NewStorage
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- 02 Aug, 2023 8 commits
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Levin Zimmermann authored
See !2 for discussion, context and details. /reviewed-by @kirr * t-with-multiple-master-nodes: fixup! client_test: Add nmaster={1,2} to test matrix fixup! client_test: Support test cluster /w >1 master fixup! TalkMaster: Switch master if dialed M is secondary fixup! Node: Add support for NEO cluster with > 1 master fixup! Dial: Catch NotPrimaryMaster & return custom error fixup! proto: Implement Error for NotPrimaryMaster fixup! proto.NotPrimaryMaster: Fix .Primary data type (2) fixup! proto.NotPrimaryMaster: Fix .Primary data type (1) client_test: Add nmaster={1,2} to test matrix client_test: Support test cluster /w >1 master proto.NotPrimaryMaster: Fix .Primary data type TalkMaster: Switch master if dialed M is secondary Dial: Catch NotPrimaryMaster & return custom error proto: Implement Error for NotPrimaryMaster openClientByURL: Fix for >1 master (split URL host) Client.URL: Fix incomplete URL if > 1 master nodes Node: Add support for NEO cluster with > 1 master
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Kirill Smelkov authored
Actually do test nmaster=2 case.
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Kirill Smelkov authored
- show all options in error context and ran test kind - skip nmaster > 1 for NEO/go as that is currently not implemented on NEO/go server - use json for interacting with runneo.py, so that we can use whatever builtin type for any argument without hardcoding ad-hoc handling of specific arguments inside runneo.py. - adjust comments + cosmetics
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Kirill Smelkov authored
- validate received NotPrimaryMaster - use Address.String() instead of printf with format that works only for ipv6 - add some logging, comments and TODO
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Kirill Smelkov authored
- no need to keep Node.MasterAddr anymore - the address of current PM is managed by TalkMaster and is provided as part of operational context to user functions that TalkMaster runs. - correct docstrings. - cosmetics.
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Kirill Smelkov authored
Expect NotPrimaryMaster only if we are trying to connect to a master.
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Kirill Smelkov authored
Provide details in the error message.
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Kirill Smelkov authored
Change .Promary type from int8 back to int32. 5d93e434 says that .Primary type is not NodeID. That is true, but changing it to int8 was a mistake: 1. PSignedNull is explicitly defined to come with '!l' struct code, which according to https://docs.python.org/3/library/struct.html#module-struct comes as 4-bytes integer on the wire: https://lab.nexedi.com/nexedi/neoppod/blob/v1.12-13-gf2ea4be2/neo/lib/protocol.py#L560-562 2. verifying this via serializing NotPrimaryMaster on NEO/py also confirms that .Primary occupies 4 bytes, not one: In [1]: from neo.lib.protocol import NotPrimaryMaster In [2]: NotPrimaryMaster(0x01020304, [('m111', 111), ('m222', 222)])._body Out[2]: '\x01\x02\x03\x04\x00\x00\x00\x02\x00\x00\x00\x04m111\x00o\x00\x00\x00\x04m222\x00\xde' ^^^^^^^^^^^^^^^^ NOTE NOTE NOTE -> change .Primary type back to being 4-bytes integer, but to int32 instead of NodeID because, as 5d93e434 correctly says, .Primary comes as array index, not a node ID. The following place of NEO/py code explicitly confirms this: https://lab.nexedi.com/nexedi/neoppod/blob/v1.12-13-gf2ea4be2/neo/master/handlers/identification.py#L155-159 Add corresponding test.
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- 01 Aug, 2023 1 commit
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Kirill Smelkov authored
Rerun `go generate`. As the diff in zproto-marshal.go shows changing NotPrimaryMaster.Primary type from NodeID to int8 actually does make a difference. This happens because NodeID type is based on int32 and changing that to int8 changes how NotPrimaryMaster structure is layed out in memory and on the wire. The changes to zproto-marshal.go in 5d93e434 seem to be done by hand and not matching the change to proto.go even though head of zproto-marshal.go says // Code generated by protogen.go; DO NOT EDIT.
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- 18 Jul, 2023 9 commits
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Levin Zimmermann authored
Tests should work with both one master or more than one masters.
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Levin Zimmermann authored
Now it's possible to run client tests against a NEO cluster which has more than one master nodes. We need this adjustement in order to test NEO/go client modification in order to support more than one master node.
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Levin Zimmermann authored
The '.Primary' attribute of the 'NotPrimaryMaster' packet has been assigned to 'NodeID' data type. This is incorrect, because the data doesn't represent the ID of the node, but an index of the '.KnownMasterList' [1]. In the old protocol NEO/py therefore also used 'PSignedNull' instead of 'PUUID' [2]. This patches fixes the data type of '.Primary' and uses 'int8' instead of 'NodeID'. Technically this doesn't make any difference, but semantically for human beings the code is easier to understand now. [1] https://lab.nexedi.com/nexedi/neoppod/blob/c6453626/neo/lib/handler.py#L161 [2] https://lab.nexedi.com/nexedi/neoppod/blob/c6453626/neo/lib/protocol.py#L716
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Levin Zimmermann authored
When connecting to a master node, the client needs to try a different master if the initially tried one is a secondary master node. This statement wasn't implemented yet before this patch and therefore it was good luck if the initally tried master was the primary one - and the connection worked - or if it was a secondary master - and the client got stuck in re-trying the same node forever. This patch makes NEO/go usage with clusters of more than one master therefore much more stable.
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Levin Zimmermann authored
After initial handshake a NEO node checks the identification of its peer by sending the 'RequestIdentification' packet. In case the peer is a secondary master it responds with 'NotPrimaryMaster'. Before this patch 'Dial' ignored the 'NotPrimaryMaster' packet and simply returned a general error. Now - after this patch - 'Dial' returns an instance of 'proto.NotPrimaryMaster' (which implements 'Error'). This helps a caller to correctly handle the secondary-master-case, which otherwise is impossible to differentiate from any other error possibility.
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Levin Zimmermann authored
When a client receives 'NotPrimaryMaster' from a secondary master, the situation is similar to the situation when we receive an error: the other node tells us, don't connect with me, connect with someone else. Finally the peer even closes the connection. Due to this similarity in structure (& because it helps us later to teach NEO/go to correctly handle 'NotPrimaryMaster' with minimal changes), we implement 'Error' for 'proto.NotPrimaryMaster'. Now 'NotPrimaryMaster' can be treated like an error.
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Levin Zimmermann authored
In a NEO URI more than one master node can be specified, because a NEO cluster may have more masters than one. But before this patch 'openClientByURL' always assumed that the given URL only specifies one master. Now the host is split into potentially > 1 master nodes. It therefore works now in the same way as the Python implementation [1]. [1] https://lab.nexedi.com/nexedi/neoppod/blob/342168cd/neo/client/zodburi.py#L64
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Levin Zimmermann authored
Before this patch Client.URL didn't contain more than one master node. This can be problematic in case we have a cluster with > 1 master nodes and the printed master is a secondary master (which may be down). In this case the user who trusts the "URL" attribute to connect to the cluster won't succeed, because the primary master can't be reached.
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Levin Zimmermann authored
Some NEO clusters have more than one master to gain a higher availability. Before this patch NEO/go Node type only handled one master address. This commit adjusts the node type and related bits so that it can support more than one master node.
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- 17 Jul, 2023 8 commits
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Levin Zimmermann authored
/reviewed-by @kirr /reviewed-on !5 * t-fix-flaky-testload: fixup! neonet/newlink: Fix lost conn in encoding detector go/neo/neonet: Fix client handshake not to accept server encoding if it is different from what client indicated go/neo/neonet: Demonstrate problem in handshake with NEO/py go/neo/neonet: Dedicate an error type to indicate "protocol version mismatch" as handshake failure cause fixup! client_test: Keep NEO srv logs if test fails fixup! client_test/NEOSrv += LogContent for better debug neonet/newlink: Fix lost conn in encoding detector client_test: Keep NEO srv logs if test fails client_test += print NEO server log if >=1 test(s) failed client_test/NEOSrv += LogContent for better debug
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Kirill Smelkov authored
* master: go/neo/neonet: Fix client handshake not to accept server encoding if it is different from what client indicated go/neo/neonet: Demonstrate problem in handshake with NEO/py go/neo/neonet: Dedicate an error type to indicate "protocol version mismatch" as handshake failure cause
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Kirill Smelkov authored
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Levin Zimmermann authored
go/neo/neonet: Fix client handshake not to accept server encoding if it is different from what client indicated If the peers encoding is different than our encoding two different scenarios can happen, because the handshake order is undefined (e.g. we don't know if our handshake is received before the peer sends its handshake): 1. Our handshake is received before peer sends its handshake, NEO/py closes connection if it sees unexpected magic, version, etc. 2. The client already sends a handshake before it proceeds our handshake. In this case it initally sends us it version, we can extract its encoding, and only later, once it proceeded our handshake with the bad encoding, it closes the connection. Before this patch case (2) wasn't handled correctly by the automatic encoding detection of 'DialLink'. 'DialLink' simply accepted the different-than-expected encoding, but once the peer proceeded the nodes handshake the peer closed the connection and the initially established and returned link was immediately closed again. Due to this it was good luck whether connecting with a peer different with an encoding different from the expected one worked or didn't work (it depended on which handshake was faster). Now 'DialLink' should reliably find the correct encoding and return a stable link. -------- kirr: this is based on the following original patch by Levin: levin.zimmermann/neoppod@f6b59772 I updated documentation throughout correspondingly and also added corresponding handshake-specific test in the previous patch. See !5 and b2da69e2 (go/neo/neonet: Demonstrate problem in handshake with NEO/py) for more in-depth description of the problem.
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Kirill Smelkov authored
Levin Zimmerman discovered that sometimes NEO/py accepts our handshake hello with encoding 'M', then replies its owh handshake ehlo with encoding 'N' and then further terminates the connection. In other words it looks like that the handshake went successful, but it actually did not and NEO/py terminates the link after some time. This manifests itself e.g. as infrequent TestLoad failures on t branch with the following output: === RUN TestLoad/py/!ssl I: runneo.py: /tmp/neo776618506/1 !ssl: started master(s): 127.0.0.1:21151 === RUN TestLoad/py/!ssl/enc=N(dialTryOrder=N,M) client_test.go:598: skip: does not excercise client redial === RUN TestLoad/py/!ssl/enc=N(dialTryOrder=M,N) xtesting.go:330: load 0285cbac258bf266:0000000000000000: returned err unexpected: have: neo://127.0.0.1:21151/1: load 0285cbac258bf266:0000000000000000: dial S1: dial 127.0.0.1:40345 (STORAGE): 127.0.0.1:56678 - 127.0.0.1:40345: request identification: 127.0.0.1:56678 - 127.0.0.1:40345 .1: recv: EOF want: nil xtesting.go:330: load 0285cbac258bf266:0000000000000000: returned tid unexpected: 0000000000000000 ; want: 0285cbac258bf266 xtesting.go:330: load 0285cbac258bf266:0000000000000000: returned buf = nil xtesting.go:339: load 0285cbac258bf265:0000000000000000: returned err unexpected: have: neo://127.0.0.1:21151/1: load 0285cbac258bf265:0000000000000000: dial S1: dial 127.0.0.1:40345 (STORAGE): 127.0.0.1:56688 - 127.0.0.1:40345: request identification: 127.0.0.1:56688 - 127.0.0.1:40345 .1: recv: EOF want: neo://127.0.0.1:21151/1: load 0285cbac258bf265:0000000000000000: 0000000000000000: object was not yet created ... client_test.go:588: NEO log tail: log file 'storage_0.log' tail: 2023-07-17 17:21:57.1519 DEBUG S1 connection completed for <ServerConnection(nid=None, address=127.0.0.1:51230, handler=IdentificationHandler, fd=20, server) at 7f3583fd4f50> (from 127.0.0.1:40345) 2023-07-17 17:21:57.1537 WARNING S1 Protocol version mismatch with <ServerConnection(nid=None, address=127.0.0.1:51230, handler=IdentificationHandler, fd=20, server) at 7f3583fd4f50> 2023-07-17 17:21:57.1548 DEBUG S1 connection closed for <ServerConnection(nid=None, address=127.0.0.1:51230, handler=IdentificationHandler, closed, server) at 7f3583fd4f50> 2023-07-17 17:21:57.1551 WARNING S1 A connection was lost during identification 2023-07-17 17:22:00.1582 DEBUG S1 accepted a connection from 127.0.0.1:51236 2023-07-17 17:22:00.1585 DEBUG S1 connection completed for <ServerConnection(nid=None, address=127.0.0.1:51236, handler=IdentificationHandler, fd=20, server) at 7f3583fd4e90> (from 127.0.0.1:40345) 2023-07-17 17:22:00.1604 WARNING S1 Protocol version mismatch with <ServerConnection(nid=None, address=127.0.0.1:51236, handler=IdentificationHandler, fd=20, server) at 7f3583fd4e90> 2023-07-17 17:22:00.1622 DEBUG S1 connection closed for <ServerConnection(nid=None, address=127.0.0.1:51236, handler=IdentificationHandler, closed, server) at 7f3583fd4e90> 2023-07-17 17:22:00.1625 WARNING S1 A connection was lost during identification 2023-07-17 17:22:03.1663 DEBUG S1 accepted a connection from 127.0.0.1:51238 2023-07-17 17:22:03.1666 DEBUG S1 connection completed for <ServerConnection(nid=None, address=127.0.0.1:51238, handler=IdentificationHandler, fd=20, server) at 7f3583fd4d10> (from 127.0.0.1:40345) 2023-07-17 17:22:03.1674 WARNING S1 Protocol version mismatch with <ServerConnection(nid=None, address=127.0.0.1:51238, handler=IdentificationHandler, fd=20, server) at 7f3583fd4d10> 2023-07-17 17:22:03.1688 DEBUG S1 connection closed for <ServerConnection(nid=None, address=127.0.0.1:51238, handler=IdentificationHandler, closed, server) at 7f3583fd4d10> 2023-07-17 17:22:03.1691 WARNING S1 A connection was lost during identification 2023-07-17 17:22:06.1714 DEBUG S1 accepted a connection from 127.0.0.1:57072 2023-07-17 17:22:06.1719 DEBUG S1 connection completed for <ServerConnection(nid=None, address=127.0.0.1:57072, handler=IdentificationHandler, fd=20, server) at 7f3583fd4b50> (from 127.0.0.1:40345) 2023-07-17 17:22:06.1727 WARNING S1 Protocol version mismatch with <ServerConnection(nid=None, address=127.0.0.1:57072, handler=IdentificationHandler, fd=20, server) at 7f3583fd4b50> 2023-07-17 17:22:06.1738 DEBUG S1 connection closed for <ServerConnection(nid=None, address=127.0.0.1:57072, handler=IdentificationHandler, closed, server) at 7f3583fd4b50> 2023-07-17 17:22:06.1738 WARNING S1 A connection was lost during identification log file 'master_0.log' tail: 2023-07-17 17:21:21.0799 PACKET M1 #0x0012 NotifyNodeInformation > A1 (127.0.0.1:37906) 2023-07-17 17:21:21.0799 PACKET M1 ! C0 | CLIENT | | RUNNING | 2023-07-17 14:21:21.079838 2023-07-17 17:21:21.0800 PACKET M1 #0x0102 NotifyNodeInformation > S1 (127.0.0.1:37918) 2023-07-17 17:21:21.0800 PACKET M1 ! C0 | CLIENT | | RUNNING | 2023-07-17 14:21:21.079838 2023-07-17 17:21:21.0801 DEBUG M1 Handler changed on <ServerConnection(nid=None, address=127.0.0.1:37966, handler=ClientServiceHandler, fd=18, server) at 7f3584245910> 2023-07-17 17:21:21.0802 PACKET M1 #0x0001 AnswerRequestIdentification > C0 (127.0.0.1:37966) 2023-07-17 17:21:21.0804 PACKET M1 #0x0000 NotifyNodeInformation > C0 (127.0.0.1:37966) 2023-07-17 17:21:21.0804 PACKET M1 ! C0 | CLIENT | | RUNNING | 2023-07-17 14:21:21.079838 2023-07-17 17:21:21.0804 PACKET M1 ! M1 | MASTER | 127.0.0.1:21151 | RUNNING | None 2023-07-17 17:21:21.0804 PACKET M1 ! S1 | STORAGE | 127.0.0.1:40345 | RUNNING | 2023-07-17 14:21:18.737469 2023-07-17 17:21:21.0805 PACKET M1 #0x0002 NotifyPartitionTable > C0 (127.0.0.1:37966) 2023-07-17 17:21:21.0810 PACKET M1 #0x0003 LastTransaction < C0 (127.0.0.1:37966) 2023-07-17 17:21:21.0811 PACKET M1 #0x0003 AnswerLastTransaction > C0 (127.0.0.1:37966) 2023-07-17 17:22:06.2053 DEBUG M1 <SocketConnectorIPv4 at 0x7f3584252d10 fileno 18 ('127.0.0.1', 21151), opened from ('127.0.0.1', 37966)> closed in recv 2023-07-17 17:22:06.2056 DEBUG M1 connection closed for <ServerConnection(nid=C0, address=127.0.0.1:37966, handler=ClientServiceHandler, closed, server) at 7f3584245910> 2023-07-17 17:22:06.2058 PACKET M1 #0x0014 NotifyNodeInformation > A1 (127.0.0.1:37906) 2023-07-17 17:22:06.2058 PACKET M1 ! C0 | CLIENT | | UNKNOWN | 2023-07-17 14:21:21.079838 2023-07-17 17:22:06.2059 PACKET M1 #0x0104 NotifyNodeInformation > S1 (127.0.0.1:37918) 2023-07-17 17:22:06.2059 PACKET M1 ! C0 | CLIENT | | UNKNOWN | 2023-07-17 14:21:21.079838 The problem is due to that my analysis from e407f725 (go/neo/neonet: Rework handshake to differentiate client and server parts) turned out to be incorrect. Quoting that patch: -> Rework handshake so that client always sends its hello first, and only then the server side replies. This matches actual NEO/py behaviour: https://lab.nexedi.com/nexedi/neoppod/blob/v1.12-67-g261dd4b4/neo/lib/connector.py#L293-294 even though the "NEO protocol" states that Handshake transmissions are not ordered with respect to each other and can go in parallel. ( https://neo.nexedi.com/P-NEO-Protocol.Specification.2019?portal_skin=CI_slideshow#/9/2 ) If I recall correctly that sentence was authored by me in 2018 based on previous understanding of should-be full symmetry in-between client and server. so here "This matches actual NEO/py behaviour" was wrong: even though https://lab.nexedi.com/nexedi/neoppod/blob/v1.12-67-g261dd4b4/neo/lib/connector.py#L293-294 indeed says that # The NEO protocol is such that a client connection is always the # first to send a packet, as soon as the connection is established, in reality it is not the case as SocketConnector always queues handshake hello upon its creation before receiving anything from remote side: https://lab.nexedi.com/nexedi/neoppod/blob/v1.12-93-gfd87e153/neo/lib/connector.py#L77-78 . In practice this leads to that in non-SSL case NEO/py server might be fast enough to send its prepared hello before receiving hello from us. Levin also explains at !5 (comment 187429): I think what happens is this: the NEO protocol doesn't specify in which order handshakes happen after initial dial. If the peer sends a handshake before receiving our handshake and if this peers handshake is received by us, 'DialLink' assumes everything is fine (no err is returned), it breaks the loop and returns the link. But then, very little time later, when the peer finally receives our handshake, this looks strange for the peer and it closes the connection. So in my understanding this should be fixed by explicitly comparing the encodings between our expected one and what the peer provided us. If encodings don't match we should retry with a new encoding in order to prevent the peer from closing the connection. For me this also explains why sometimes the tests passed and sometimes didn't: it depended on which node was faster ('race condition'). -> In this patch we add correspondig handshake test that demonstrates this problem. It currently fails as --- FAIL: TestHandshake (0.01s) --- FAIL: TestHandshake/enc=N (0.00s) newlink_test.go:154: handshake encoding mismatch: client: unexpected error: have: <nil> "<nil>" want: &neonet._HandshakeError{LocalRole:1, LocalAddr:net.pipeAddr{}, RemoteAddr:net.pipeAddr{}, Err:(*neonet._EncodingMismatchError)(0xc0000a4190)} "pipe - pipe: handshake (client): protocol encoding mismatch: peer = 'M' ; our side = 'N'" --- FAIL: TestHandshake/enc=M (0.00s) newlink_test.go:154: handshake encoding mismatch: client: unexpected error: have: <nil> "<nil>" want: &neonet._HandshakeError{LocalRole:1, LocalAddr:net.pipeAddr{}, RemoteAddr:net.pipeAddr{}, Err:(*neonet._EncodingMismatchError)(0xc0001a22cc)} "pipe - pipe: handshake (client): protocol encoding mismatch: peer = 'N' ; our side = 'M'" We will fix it in the next patch. /reported-by @levin.zimmermann /reported-on !5
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Kirill Smelkov authored
go/neo/neonet: Dedicate an error type to indicate "protocol version mismatch" as handshake failure cause We will soon need to detect if a handshake failure was due to mismatch of protocol encodings and that would require introduction of dedicated error type for that cause. As a preparatory step first refactor "version mismatch cause" to follow the same style for symmetry.
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Kirill Smelkov authored
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Kirill Smelkov authored
LogContent -> LogTail py/neolog -> `python -m neo.scripts.neolog` FIXME for glog FIXME for admin_0.log and other log files
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