at_lookup

• fix: strengthen the from challenge. A client now checks that a from: challenge has the shape an atServer issues — _<uuid><atSign>:<uuid>, and that the atSign it names is the one this client asked for — before signing it. Defensive in anticipation of broader use of the APKAM keypair in future.

• feat: CacheableSecondaryAddressFinder takes an optional cacheDuration to override the default 1-hour cache TTL.
• fix(deps): updated the at_chops constraint to ^3.3.0, the actual minimum this package compiles against.
• refactor: route PKAM/CRAM signing + hashing through at_chops (PkamSigningAlgo / SHA512HashingAlgo); crypton and crypto are no longer imported anywhere in the package and have been dropped from dependencies. Byte-identical by construction.
• feat: bound network operations with a timeout so a dead network cannot hang the SDK. SecureSocketUtil.createSecureSocket now accepts an optional timeout (and honours SecureSocketConfig.connectTimeout), passing it to SecureSocket.connect. SecondaryAddressFinder.findSecondary takes an optional timeout that bounds the entire atDirectory lookup — the retry loop and the previously-fixed 30-second response busy-wait — as a single deadline. Both default to AtNetworkTimeouts.effectiveDefault (30s) and are capped at 60s (#1909). Requires at_commons ^5.13.0.

• chore(deps): at_chops ^3.0.0

• fix: revert breaking changes

• chore: clean up lint from new strict_top_level_inference rule
• feat: AtLookupException non-nullable errorCode and errorMessage

• chore(deps): remove unused deps (path)
• chore(deps): at_commons ^5.5.0

• feat: add SecureSocketConfig? config to SecondaryUrlFinder constructor
• fix: make SecureSocketConfig.tlsKeysSavePath optional

• feat: add OutboundConnection? connection to the AtLookUp interface

• fix: update exception and log messages to use standard terminology ('atServer' instead of 'secondary server', 'atDirectory' instead of 'root server')

What's Changed

• fix: git#865 - fixes notifying the switch atSign event multiple times by @sitaram-kalluri in #867
• fix: Switch atsign bug by @murali-shris in #864
• feat: Add atSign to AtSignLoggers' names when feasible. Some code simplification and refactoring by @gkc in #870
• fix: reverted async,path to older versions by @purnimavenkatasubbu in #879

Full Changelog: v3.0.50...v3.0.51

• fix: potential bug handling atSigns which end in data e.g. @foo_data

• build[deps]: Upgraded the following packages:
  • at_commons to v5.0.0
  • at_utils to v3.0.19
  • at_chops to v2.0.1

• feat: consume EnrollVerbBuilder in AtLookup.executeVerb()
• chore: upgrade at_commons to v4.1.1 and at_utils to v3.0.18

• fix: Fixed legacy error handling so error message isn't truncated if it contains a hyphen

• fix: Modify "executeCommand" to parse the error response from server and return appropriate exception

• build[deps]: Upgraded at_chops to v2.0.0

• build[deps]: Upgraded the following packages:
  • at_commons to v4.0.0
  • at_utils to v3.0.16
  • at_chops to v1.0.7

• fix: revert removing private key reference from at_lookup_impl

• fix: more informative exception messages
• fix: removed private key reference from at_lookup_impl

• feat: introduce methods cramAuthenticate and close into the AtLookup interface
• deprecate: authenticate_cram() from AtLookupImpl. [cramAuthenticate should be used instead]
• build(deps): Upgrade at_commons to v3.0.57 and at_chops to v1.0.5

• feat: make SecondaryUrlFinder (atServer address lookup) resilient to transient failures to reach an atDirectory
• feat: made retryDelaysMillis a public static variable in SecondaryUrlFinder; this allows clients to control
  • (1) how many retries are done and
  • (2) the delay after each subsequent retry

• feat: Changes for apkam
• chore: Upgraded at_commons to 3.0.53 and at_utils to 3.0.15

• fix: wrap socket.listen in runZonedGuarded to ensure weird network errors are always caught

• fix: ensure outbound sockets are cleaned up properly

• feat: changes to call at_chops.sign() method which supports different signing algorithms.
• chore: upgrade at_commons to 3.0.43, at_utils to 3.0.12 and at_chops to 1.0.3

• fix: fallback code for backward compatibility if at_chops instance is not set

• feat: added new method pkamAuthenticate in at_lookup_impl which uses at_chops for pkam signing.

• fix: Removed race condition (related to management of outbound connection state after timeouts) which could in very rare circumstances cause unnecessary long delays

• feat: Upgrade at_commons for notifyFetch verb

• fix: tls keys are being dumped only by some secure socket connections when decryptPackets is set to true
• feat: tcpNoDelay set to true for all sockets
• fix: Dart analyzer issues

• Introduce clientConfig which can be used to send client configurations to server.

• Enhance the executeVerb to handle server responses in JSON format

• createConnection() now directly uses CacheableSecondaryAddressFinder which can be passed on as optional param
• Introducing SecureSocketUtil which [optionally] allows creation of secure sockets with security context
• Add mutex to PKAM and CRAM authentication
• AtCommons upgraded to latest version v3.0.20

• Improved timeout handling logic in outbound message listener
• Upgraded at_commons version to 3.0.19

• Update at_commons version 3.0.18 to display hidden keys in scan

• Update at_commons version 3.0.17 for AtException hierarchy

• Removed invalid line added to base_connection.dart

• Update at_commons version 3.0.16 for bypass cache feature

• find secondary bug fix

• Added CacheableSecondaryAddressFinder

• Update at_commons version
• Remove unnecessary print statement

• Export secondary address cache from the package
• Update at_commons and at_utils version

• Updated dependencies

• Added cache for secondary url lookup from root server

• Rename NotifyDelete to NotifyRemove

• Update at_commons version for Info and NoOp verb
• Update at_commons version for NotifyDelete verb

• Upgrade at_commons version for bug fix in notify verb syntax

• Upgrade at_commons version for shared key metadata support in notify

• Add encryption shared key and public key checksum of sharedWith atsign in metadata

• increase outbound connection timeout

• outbound listener bug fix

• at_commons version change for AtTimeoutException
• Handle error: responses from server

• at_lookup fix race condition when not using await with lookup requests

• at_utils version change for fix formatAtSign bug for null value

• at_commons and at_utils version change

• at_commons and at_utils version change

• at_utils and at_commons version change for AtKey validations.

• Reduce wait time on address lookup to root server

• Reduce wait time on server response

• connection close replaced with destroy

• Sync pagination feature