EPC Version 3.1.128
    • 11 Feb 2026
    • 2 Minutes to read
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    EPC Version 3.1.128

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    Article summary

    Nectar Endpoint Client 3.1.128

    Overview

    Nectar Endpoint Client 3.1.128 introduces enhanced codec support, autonomous test scheduling, dynamic resource allocation, TLS 1.3 management connections, and improved VPN and P2P networking capabilities.

    This release also includes important stability improvements across Windows, Linux, macOS, and Android platforms, along with multiple SIP, TLS, VoIP, and Video Conferencing fixes.


    Supported Platforms

    macOS 11.5+ (Universal)
    RHEL v8 / v9 (x86_64, ARMv8-A)
    Ubuntu 22–24 (x86_64, ARMv8-A)
    Debian 12 (x86_64, ARMv8-A)
    Windows 10 / 11 (x86_64)
    Android 9+ (API 35, Universal)


    New Features & Enhancements

    Core Platform

    • Support for additional voice and video conferencing codecs
    • Autonomous test scheduling
    • Dynamic test resource reservation per interval (replaces static reservation model)
    • TLS 1.3 management connections with load balancing
    • Automatic local network interface and/or IP selection
    • Improved VPN networking and split tunneling support
    • Enhanced P2P network capacity measurement
    • Remote Agent activity log retrieval and filtering

    Networking & Interface Management

    • Improved behavior when selecting “Any” source IP during VoIP and Video tests
    • Enhanced IPv4/IPv6 interface selection logic
    • Improved handling of interface re-enumeration events
    • Better VPN interface detection and advertisement to controller

    Logging & Diagnostics

    • Added enhanced debug logging for SIP signaling and RTP flow
    • Added temporary logging configuration capability
    • Added long-term logging for test start/finish and process lifecycle events
    • Windows log files now written to a system-accessible location

    Platform Enhancements

    • Improved Android WiFi health granularity
    • Added Android API v34 and v35 support
    • Improved Windows VM detection logic
    • Improved licensing behavior to enumerate active tests upon re-license


    Resolved Issues (Since 3.1.115)

    Critical

    • Fixed Windows agent unhandled exception during Video Conferencing test that caused agent termination on AWS systems


    Major

    • Fixed IPv4/IPv6 mis-selection when “Any” IP is chosen for test originator
    • Resolved SIP over TLS with SRTP sending SIP BYE immediately after INVITE
    • Fixed continuous SIP re-registration without credentials
    • Resolved orphaned UDP listener socket after interface IP change
    • Fixed Linux IPv6 ping not sending ICMP packets and resulting Java null pointer exception
    • Corrected Windows agent VPN reconnection not advertising VPN interface IP
    • Fixed improper port handling when answering agent configured with different P2P port


    Significant

    • Fixed out-of-band telephone event signaling
    • Resolved SIP OPTIONS authentication Call-ID mismatch
    • Fixed delayed SIP ACK in video conference over TCP
    • Resolved rapid re-registration attempts after interface re-enumeration
    • Corrected incorrect Contact Address port in TLS registration with Kamailio
    • Improved clock synchronization handling by skipping tests until resynced
    • Fixed VoIP conference participant agent test-not-supported error for In-band DTMF
    • Improved Linux ping and traceroute probe behavior for S64 detection


    Minor

    • Added SIP signaling and RTP debug logging
    • Improved traceroute packet timeout handling per hop
    • Fixed SIP options test parse error logging
    • Improved Android DNS null reference handling
    • Improved Android email validation behavior
    • Improved WiFi signal reporting granularity


    Known / Outstanding Issues

    • Graceful shutdown sends SIP unregister without credentials (Minor)
    • SIP registration using “Auto” transport retries every 5 seconds instead of 90 when password is incorrect (Significant)
    • Video conference H264 stream fragmentation over VPN (Significant)
    • Android agent does not validate email format on first launch (Minor)


    Reporting a Bug

    To report a suspected issue, contact Nectar Product Support at support@nectarcorp.com

    Please provide your deployment environment details and software release number when submitting a request.


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