pysnmp

Fixed network address parsing issue with MIB indices.

Lifted pysmi dependency restriction up to 2.0.0 and above.

Fixed an error handling bug in walk_cmd.

Fixed Counter32 and TimeTicks overflow handling.

Improved type hints and test coverage for SET command functions.

Improved AsyncioDispatcher to track loop state and ensure proper event loop closure.

Refined MibBuilder error handling and added tests for MIB compilation errors.

Fixed dispatcher close handling to avoid event loop/resource leaks.

Bumped pyasn1 dependency to 0.6.3.

Fixed smi.rfc1902 boolean return values to match documentation.

Added type hints and tests for is_fully_resolved() to improve correctness.

Refactored AsyncioDispatcher to avoid creating event loop unexpectedly and improve loop initialization.

Improved IPv6 handling (zone ID support).

Implemented v1arch command timeouts for {set,next,bulk}_cmd operations.

Dropped support for Python 3.9.

Added Python 3.14 to test matrix.

Fixed a bug in bulk walk command when lookupMib is set to False.

Implemented v1arch dispatcher timeout support.

Resolved dispatcher resource leak issue.

Upgraded pysmi dependency to 1.6.1.

Fixed an SNMPv2-SMI issue.

Fixed a few MIB related issues.

Improved shadow cloning patch.

Fixed v1arch local address issue.

Fixed shadow cloning issue.

Fixed a resource leak issue.

Reverted some changes in named values support.

Reverted some changes in fixed length support.

Reimplemented getReference in a few MIB objects.

Updated built-in MIBs to match latest PySMI compiled results.

Fixed a bug in compatibility layer.

Fixed two bugs in MIB related code and improved compatibility layer.

Method names are revised to be PEP 8 compliant. Compatibility layer is added to support most of the old method names, but will be removed in the next major release, 8.0.

Python 3.8 support is dropped.

Python 3.13 support is added.

The pysmi dependency is now optional.

Dumped pysnmpcrypto dependency and bind to cryptography if presented.

Fixed a bulkCmd IndexError bug.

Cleaned up nextCmd/bulkCmd related code.

Revised docs and examples accordingly.

Revised v1arch hlapi and its docs/examples.

Revised nextCmd, bulkCmd, walkCmd, and bulkWalkCmd returned collections.

Moved Slim class to v1arch.

Reimplemented walkCmd and bulkWalkCmd.

Removed pyasn1.compat dependency.

Switched to async DNS resolver.

Removed pyasn1.compat dependency.

The high-level API (hlapi) extended to cover lightweight SNMP v1arch in hope to ease the use of packet-level SNMP API.

By way of introducing v1arch hlapi, the sub-packages layout changed so that pysnmp.hlapi is moved to pysnmp.hlapi.v3arch and the new v1arch layer is introduced in pysnmp.hlapi.v1arch. This change does not break backward compatibility as pysnmp.hlapi still defaults to pysnmp.hlapi.v3arch.

The pysnmp.hlapi.v1arch is designed to be as much similar in use to pysnmp.hlapi.v3arch, but with high-performance in mind. One of the consequences of this higher performance focus is that various automation around building well-formed SNMP messages is and mediating differences between SNMP versions is not present in this new v1arch layer.

The signature of the hlapi .sendNotification() call has changed to accept *varBinds instead of a sequence of varBinds. The rationale is to unify this method call with similar methods of CommandGenerator. This change should not compromise backward compatibility with pysnmp 4.

Fixed a duplicate item issue in bulkWalkCmd.

Many really old backward-compatibility code snippets removed. Most importantly, everything related to (non-standard) UNIX domain socket transport are gone.

The MIB instrumentation API overhauled in backward incompatible way:

• MIB instrumentation methods signatures simplified to accept just var-binds (as var-arg), the rest of the parameters packed into opaque kwargs

• CommandResponder application passes snmpEngine and optionally user-supplied cbCtx object throughout the MIB instrumentation methods. The goal is to let MIB objects access/modify whatever custom Python objects they need while being called back.

Cherry-picked many minor fixes from etingof/master branch.

Applied PEP8 recommended names. This breaks backward compatibility.

Removed pyasn1.compat dependency. A helper release to enable migration.

Improved OrderedDict performance.

User credentials changes are now reflected in the LCD.

Other cleanup.

Deleted more obsolete items.

Removed unused dependencies.

Removed package postfix. A helper release to enable migration.

Removed pyasn1.compat dependency. A helper release to enable migration.

Removed package postfix. A helper release to enable migration.

Removed package postfix. A helper release to enable migration.

Removed package postfix. A helper release to enable migration.

Fixed broken SNMPv3 msgFlag initialization on authoritative SNMP engine ID discovery. This bug causes secure communication with peer SNMP engines to stall at SNMP engine ID discovery procedure.

Added SNMPv3 USM master and localized keys support to LCD configuration

Improved initial and runtime USM debugging

Fixed a bug in USM configuration which did not allow the same user names to be added under different security names

Reworked VACM access control function. Most important changes include:

• Added subtree match negation support (vacmViewTreeFamilyType)

• Added subtree family mask support (vacmViewTreeFamilyMask)

• Added prefix content name matching support (vacmAccessContextMatch)

• Added key VACM tables caching for better isAccessAllowed lookup performance

One potential incompatibility may be caused by the addContext() call which now needs to be made explicitly during low-level VACM configuration rather than be a side effect of addVacmAccess() call.

Rebased MIB importing code onto importlib because imp is long deprecated

Received MIB objects resolution made more forgiving to errors, added optional ignoreErrors parameter to ObjectType.resolveWithMib() to control that behaviour.

Fixed asyncore main loop to respect non-default timer resolution

Fixed .setTimerResolution() behaviour of abstract main loop dispatcher to update call intervals of the existing periodic dispatcher jobs

Fixed var-bindings initialization to prevent pyasn1 encoder failures with newer pyasn1 versions where SequenceOf type looses its default initializer.

Fixed crash on uninitialized component serialization left out in SNMP v1 TRAP PDU to SNMPv2/3 TRAP PDU proxy translation routine.

Made MIB loader ignoring file and directory access errors

Added missing SNMP PDU error classes and their handling in Command Responder

Fixed crash on MIB load failure in case of directory access error

Fixed socket transparency option (IPV6_TRANSPARENT) to make IPv6 transparent operation functional

Fixed Pythonized MIB load (in the source form) - made sure to turn it into a code object prior to its execution

Copyright notice extended to the year 2019

Exposed ASN.1 Null type through rfc1902 module for convenience.

Use compile() before exec'ing MIB modules to attach filename to the stack frames (ultimately shown in traceback/debugger)

Fixed hlapi/v3arch transport target caching to ensure transport targets are different even if just timeout/retries options differ

Fixed hlapi LCD configurator to include contextName. Prior to this fix sending SNMPv3 TRAP with non-default contextName would fail.

Fixed possible duplicate key occurrence in the OrderedDict following a race condition

Fixed undefined name references in inet_pton/inet_ntop substitute routines for IPv6 in TRANSPORT-ADDRESS-MIB.py

Improved package build and dependency tracking

Fixed missing LICENSE from the tarball distribution

Fixed CommandGeneratorLcdConfigurator.unconfigure() to fully clean up internal caches, otherwise repetitive attempts to configure the target would fail.

Fix to tolerate possible duplicate enumerations in Bits and Integer SMI types.

Fix to tolerate non-initialised entries in SNMP community table. Once a bad entry sneaked into the SNMP community table, all the subsequent SNMP v1/v2c operations failed. The fix ignores incomplete SNMP community table entries in the course of building indices.

Added PySnmpError.cause attribute holding parent exception tuple

Fixed broken InetAddressType rendering caused by a pyasn1 regression

Fixed typo in RFC1158 module

Fixed possible infinite loop in GETBULK response PDU builder

Fixed memory leak in the config.delContext() VACM management harness

Fixed Bits class initialization when enumeration values are given

Fixed crash caused by incoming SNMPv3 message requesting SNMPv1/v2c security model

Fixed out-of-scope OIDs leaking at the end of SNMP table at hlapi nextCmd and bulkCmd calls when lexicographicMode = False

Copyright notice extended to the year 2018

Fixed short local key expansion at 3DES key localization implementation.

Migrated references from SourceForge

Added missing SHA2 support for Blumenthal key localization

Fixed named bits handling at rfc1902.Bits

Fixed missing SmiError exception class at pysnmp.proto.rfc1155

Fixed SNMP v1->v2c PDU proxy -- error-status & error-index fields from v1 PDU get copied over to v2c PDU in addition to the exception sentinels being set

The pysnmp version being used gets exposed to the MIB modules via the MibBuilder instance

The .setObjects() method of the SMI types now accepts append=False parameter to let the caller adding more than 255 elements over the course of multiple calls

Added support for some more missing fields of SMIv2 MACRO types

Example scripts rearranged in a way that IPv6 requirement is clearly encoded in the script's name

Fixed SNMPv2-SMI.NotificationType to expose .set/getReference() instead of .set/getRevision() which should not be there in the first place

Fixed non-implied-OID encoding in SNMP table indices

Fixed inconsistent SNMPv3 discovery and retrying algorithm

HMAC-SHA-2 Authentication Protocols support added (RFC-7860)

The pycryptodome dependency replaced with pycryptodomex as it is recommended by the upstream to avoid unwanted interference with PyCrypto package should it also be installed

Sphinx theme changed to Alabaster in the documentation

Minor adjustments towards pyasn1 0.4.x compatibility

Fixed ObjectIdentifier-into-ObjectIdentity casting at rfc1902.ObjectType MIB resolution harness

Fixed NetworkAddress object handling in SNMP table indices

Fixed MIB lookup by module:object.indices MIB object with InetAddressIPv{4,6} objects being in the index

Fixed non-translated PDU being retries at CommandGenerator what leads to wrong PDU version being sent and even a crash on incompatible PDU/SNMP message combination

Refactored partial SNMP message decoding to make it less dependent on unpublished pyasn1 API features.

Fix to MibTableRow.setFromName() to keep the input parameter type when it propagates to the return value. Before this fix ObjectIdentity.prettyPrint() may crash when rendering malformed SNMP table indices.

Fixed NotificationReceiver to include SNMPv1 TRAP Message community string into SNMPv2c/v3 TRAP PDU

Fixed multiple bugs in SNMP table indices rendering, especially the InetAddressIPv6 type which was severely broken.

Fixed crashing Bits.prettyPrint() implementation

Fixed crashing Bits.clone()/subtype() implementation

Fixed leaking exceptions bubbling up from the asyncio and Twisted adapters

Deprecated UsmUserData initialization parameters removed

Adapted to pyasn1 API changes introduced by release 0.3.1

Fix to a crash happening on inbound SNMP message having non-initialized fields

Fix to (persistent SNMP engine ID) file writing on Windows

Security fix to the bug introduced in 4.3.6: msgAuthoritativeEngineTime stopped changing over time and was returning the same timestamp (process start time). This fix makes it growing as it should.