Software update: Transmission 2.90

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After a long time of silence, a new version of Transmission has appeared again. This torrent client uses few resources, is cross-platform and open source, and has a simple and uncluttered interface. The program was developed for use with OS X, but on the download page versions for Linux, Solaris, FreeBSD and some NAS systems are also available. In addition, there is also an unofficial Windows port. In version 2.90, the following changes and improvements have been made:

All Platforms

  • Fix renaming torrent files with common prefix
  • Fix some more thread safety bugs in the tr_list datatype
  • Fix infinite loop when removing torrent data
  • Add support for CyaSSL/WolfSSL and PolarSSL cryptographic backends; bump OpenSSL minimum to v0.9.7
  • Initial CMake build system support
  • Many improvements to support Windows builds with MSVS and MinGW; drop XP/2003 support, only Vista and up now
  • Allow building against system UTP and DHT libraries
  • Fix several memory leaks and buffer overflows
  • Support miniupnpc API v14
  • Fix “prefetch-enabled” value type in settings.json (boolean instead of integer)
  • Fix some issues discovered by static analysis (cppcheck, coverity)
  • Fix invalid JSON encoding for non-printable characters
  • Fix multi-threaded local use when encoding/decoding JSON data
  • Fix encrypted communication with libevent 2.1+
  • Prevent completed pieces modification by webseeds
  • Require absolute paths in RPC requests
  • Fix and unify torrent origin display in GTK+, Qt and web clients
  • Fix crash on session shutdown (evdns_getaddrinfo_cancel)
  • Retry if RPC server fails to bind to specified address
  • Improve error checking on metadata retrieval
  • Improve UTF-8 validity checking (merge changes from LLVM)
  • Don’t build transmission-cli by default (it’s long deprecated)

Mac Client

  • UI fixes for OS X 10.9+
  • Trim potential URIs from clipboard
  • Allow downloading files from http servers (not https) on OS X 10.11+
  • Change Sparkle Update URL to use HTTPS instead of HTTP (addresses Sparkle vulnerability)
  • Fix global options popover layout
  • Fix building with Xcode 7+
  • Drop OS X 10.6 support

GTK+ Client

  • Fix overshoot and undershoot indicators display with GTK+ 3.16+ in main window
  • Don’t require DISPLAY if started with –version argument

Qt Client

  • Improve performance in Torrent Properties dialog for torrents with lots of files
  • Prevent entering file renaming mode with mouse double-click
  • Add context menu on files tab of Torrent Properties dialog resembling that of Mac client
  • Remove torrent file from watch directory even if “show options dialog” is not set
  • Use theme-provided icons in system tray and About dialog
  • Fix initial watch directory scan
  • Improve filter bar look and feel; lots of other small visual fixes; RTL layout fixes
  • Show message to the user when duplicate torrent is being added
  • Improve magnet handling in main window
  • Display notifications via tray icon if D-Bus is not available
  • Show notice on top of filtered torrents list; clear whole filter on notice double-click
  • Add proper compiler flags to indicate C++11 use
  • Fix translation files loading
  • Add Chinese (China), German, Indonesian, Italian (Italy), Korean, Polish (Poland), Ukrainian translations; update existing translations


  • Run as service on Windows when in background mode
  • Rework directory watching, add support for native mechanisms on BSD/Darwin (kqueue) and Windows (ReadDirectoryChanges?)
  • Don’t make assumptions of remote path validity in transmission-remote

Web Client

  • Content Security Policy enhancements
  • Enable “resume now” for queued torrents
  • Mark appropriate fields in preferences dialog as HTML5 number fields
  • Update to jQuery 1.11.2, jQueryUI 1.11.4; use jQueryUI menus instead of custom ones

Version number 2.90
Release status Final
Operating systems Linux, BSD, macOS
Website Transmission
License type GPL
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