Try to set sane limits for RLIMIT_NO_FILE

E.g. on OSX the default is 256, which isn't exactly compatible with
torrent downloads.

Closes GH-257

1 files changed, 19 insertions, 0 deletions

diff --git a/src/OptionHandlerFactory.cc b/src/OptionHandlerFactory.cc
index 409f2eab..f89a1c44 100644
--- a/src/OptionHandlerFactory.cc
+++ b/src/OptionHandlerFactory.cc
@@ -755,6 +755,25 @@ std::vector<OptionHandler*> OptionHandlerFactory::createOptionHandlers()
     op->addTag(TAG_ADVANCED);
     handlers.push_back(op);
   }
+#ifdef HAVE_SYS_RESOURCE_H
+  {
+    OptionHandler* op(new NumberOptionHandler
+                      (PREF_RLIMIT_NOFILE,
+                       TEXT_RLIMIT_NOFILE,
+                       // Somewhat sane default that most *nix use.
+                       // Some other *nix, like OSX, have insane defaults like
+                       // 256, hence better *not* get the default value from
+                       // getrlimit().
+                       "1024",
+                       // 1 should not be a problem in practise, since the code
+                       // will only adjust if the specified value > the current
+                       // soft limit.
+                       // And sane systems have a default soft limit > 1.
+                       1));
+    op->addTag(TAG_ADVANCED);
+    handlers.push_back(op);
+  }
+#endif // HAVE_SYS_RESOURCE_H
   {
     OptionHandler* op(new BooleanOptionHandler
                       (PREF_SELECT_LEAST_USED_HOST,