1. 28 Nov, 2018 1 commit
    • Grigorii Demidov's avatar
      daemon TLS: increase wire-buffer size · 2d87427c
      Grigorii Demidov authored
      When decoding large packets, gnutls gives the application chunks
      of size 16kb. So that tls session wirebuffer must be at least
      KNOT_WIRE_MAX_PKTSIZE + 16kb.  (message re-formatted by vcunat)
      2d87427c
  2. 13 Nov, 2018 1 commit
  3. 12 Oct, 2018 2 commits
  4. 14 Sep, 2018 2 commits
    • Vladimír Čunát's avatar
      misc nitpicks · 9d05c1f0
      Vladimír Čunát authored
      - \param family, esp. don't rely on AF_UNSPEC being zero
      - kres_gnutls_vec_push(): don't uv_write() if ENOMEM
      - tls_client_params_clear(): remove unused function
      9d05c1f0
    • Marek Vavruša's avatar
      daemon/worker: fixes error handling from TLS writes · f52231b6
      Marek Vavruša authored
      The error handling loop for uncorking TLS data was wrong, as the
      underlying push function is asynchronous and there's no relationship
      between completed DNS packet writes and number of TLS message writes.
      In case of the asynchronous function, the buffered data must be valid
      until the write is complete, currently this is not guaranteed and
      loading the resolver with pipelined requests results in memory errors:
      
      ```
      $ getdns_query @127.0.0.1#853 -s -a -s -l L -B -F queries -q
      ...
      ==47111==ERROR: AddressSanitizer: heap-use-after-free on address 0x6290040a1253 at pc 0x00010da960d3 bp 0x7ffee2628b30 sp 0x7ffee26282e0
      READ of size 499 at 0x6290040a1253 thread T0
          #0 0x10da960d2 in wrap_write (libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x1f0d2)
          #1 0x10d855971 in uv__write (libuv.1.dylib:x86_64+0xf971)
          #2 0x10d85422e in uv__stream_io (libuv.1.dylib:x86_64+0xe22e)
          #3 0x10d85b35a in uv__io_poll (libuv.1.dylib:x86_64+0x1535a)
          #4 0x10d84c644 in uv_run (libuv.1.dylib:x86_64+0x6644)
          #5 0x10d602ddf in main main.c:422
          #6 0x7fff6a28a014 in start (libdyld.dylib:x86_64+0x1014)
      
      0x6290040a1253 is located 83 bytes inside of 16895-byte region [0x6290040a1200,0x6290040a53ff)
      freed by thread T0 here:
          #0 0x10dacdfdd in wrap_free (libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x56fdd)
          #1 0x10d913c2e in _mbuffer_head_remove_bytes (libgnutls.30.dylib:x86_64+0xbc2e)
          #2 0x10d915080 in _gnutls_io_write_flush (libgnutls.30.dylib:x86_64+0xd080)
          #3 0x10d90ca18 in _gnutls_send_tlen_int (libgnutls.30.dylib:x86_64+0x4a18)
          #4 0x10d90edde in gnutls_record_send2 (libgnutls.30.dylib:x86_64+0x6dde)
          #5 0x10d90f085 in gnutls_record_uncork (libgnutls.30.dylib:x86_64+0x7085)
          #6 0x10d5f6569 in tls_push tls.c:238
          #7 0x10d5e5b2a in qr_task_send worker.c:1002
          #8 0x10d5e2ea6 in qr_task_finalize worker.c:1562
          #9 0x10d5dab99 in qr_task_step worker.c
          #10 0x10d5e12fe in worker_process_tcp worker.c:2410
      ```
      
      The current implementation adds opportunistic uv_try_write which
      either writes the requested data, or returns UV_EAGAIN or an error,
      which then falls back to slower asynchronous write that copies the buffered data.
      
      The function signature is changed from simple write to vectorized write.
      
      This also enables TLS False Start to save 1RTT when possible.
      f52231b6
  5. 08 Jan, 2018 1 commit
  6. 28 Feb, 2017 2 commits
  7. 25 Jan, 2017 1 commit
  8. 09 Jan, 2017 1 commit
  9. 05 Aug, 2016 4 commits
  10. 16 Jul, 2016 1 commit
  11. 06 Jul, 2016 1 commit
    • Marek Vavrusa's avatar
      daemon: workers are interconnected with IPC pipes · de7b3862
      Marek Vavrusa authored
      forks are connected with IPC pipes to process
      group leader and can execute expressions on its
      behalf. so running commands over all workers
      is easy now:
      
      > hostname() -- single
      localhost
      
      > map 'hostname()' -- all
      localhost
      localhost
      localhost
      de7b3862
  12. 11 May, 2016 1 commit
  13. 03 May, 2016 1 commit
    • Marek Vavrusa's avatar
      daemon: out-of-order processing for TCP · c23edd06
      Marek Vavrusa authored
      * daemon now processes messages over TCP stream
      out-of-order and concurrently
      * support for TCP_DEFER_ACCEPT
      * support for TCP Fast-Open
      * there are now deadlines for TCP for idle/slow
      streams (to prevent slowloris; pruning)
      * there is now per-request limit on timeouts
      (each request is allowed 4 timeouts before bailing)
      * faster request closing, unified retry/timeout timers
      * rare race condition in timer closing fixed
      c23edd06
  14. 07 Oct, 2015 1 commit
  15. 14 Jul, 2015 1 commit
  16. 28 Apr, 2015 1 commit
  17. 27 Apr, 2015 1 commit
  18. 26 Apr, 2015 1 commit
    • Marek Vavruša's avatar
      daemon/worker: reworked multiplexed worker · c7d62055
      Marek Vavruša authored
      * each query is assigned a task
      * each task contains request, some primitives and mempool
      * worker can process multiple tasks at once and
        offload I/O to event loop
      
      Not finished:
      
      * it depends on icmp/system timeouts, #22
      * tcp reads are going to be bad if the messages
        arrive fragmented #21
      c7d62055
  19. 24 Apr, 2015 1 commit
  20. 31 Mar, 2015 1 commit
  21. 03 Jan, 2015 1 commit
  22. 30 Dec, 2014 1 commit
  23. 22 Aug, 2014 1 commit
  24. 14 Aug, 2014 1 commit
  25. 08 Aug, 2014 1 commit
  26. 05 Aug, 2014 1 commit
  27. 04 Aug, 2014 1 commit
  28. 31 Jul, 2014 1 commit