8 Commits

• support MSG_FASTOPEN on old kernels
  Aleksey Filippov · 2015-02-17 15:30:43 +01:00
  4e986caa2a
• add sendto hook to handle MSG_FASTOPEN flag
  Aleksey Filippov · 2015-01-23 17:14:37 +01:00
  8dd08e2cd2
• add test for getnameinfo
  rofl0r · 2012-12-17 23:22:25 +01:00
  d888e4ebf4
• replace hostent lookup with better performing in-memory copy.

  the central dns resolver function proxy_gethostbyname() used
  to iterate over the gethostent() db (/etc/hosts) on each dns
  request.
  since this is not threadsafe, we synchronized access to it
  previously using mutexes. the parsing of this file is slow,
  and blocking all threads to do it even moreso.
  since gethostent_r() is only available on a few platforms,
  i decided to read the hostent db once and then use a quick
  in-memory lookup on further usage.
  
  + some further refactoring.

  rofl0r · 2012-11-08 01:18:19 +01:00
  af5c6f0c6a
• move stringfromipv4 into common.c
  rofl0r · 2012-11-07 22:00:03 +01:00
  c698d48c03
• failed attempt to use shared memory for the ip <-> dns mapping

  this is in order to get irssi, which forks for DNS lookups,
  and similar programs, to work as intended.
  
  in a previous attempt i learned that shared memory created in a
  child process is not visible to the parent;
  in this attempt i spin off a thread from the parent which listens
  on a pipe and manages the shared memory allocation from the parent
  address-space. however this doesnt work as expected:
  memory allocated in the parent after the child forked is not visi-
  ble to the child as well.
  
  so what happens is: irssi starts a child process, the thread allocs
  memory and hands it to the child, the child attempts to write and
  segfaults. however irssi doesnt crash. since now the memory is
  already allocated, doing the dns lookup again will succeed.
  
  i.e. the dns lookup works now in irssi by luck.
  all but the first dns lookups will suceed.
  
  however this is not good enough for me to be satisfied, i commit
  this only for documentation purposes.

  rofl0r · 2012-11-07 16:49:14 +01:00
  25afe98b20
• add some test/debug programs
  rofl0r · 2012-11-04 05:10:50 +01:00
  8ce1e51a60
• add test for getaddrinfo
  rofl0r · 2012-07-16 01:21:22 +02:00
  6f56956715