buffer: clean up ssock on being killed

* use signal handlers to avoid littering tmpdir with dead sockets
* add connection reset error (for socketstream)
* convert some imports to new style

1 files changed, 3 insertions, 0 deletions

diff --git a/src/io/posixstream.nim b/src/io/posixstream.nim
index 970a50e6..5e9082a9 100644
--- a/src/io/posixstream.nim
+++ b/src/io/posixstream.nim
@@ -13,6 +13,7 @@ type
   ErrorFault* = object of IOError
   ErrorInterrupted* = object of IOError
   ErrorInvalid* = object of IOError
+  ErrorConnectionReset* = object of IOError
 
 proc raisePosixIOError*() =
   # In the nim stdlib, these are only constants on linux amd64, so we
@@ -27,6 +28,8 @@ proc raisePosixIOError*() =
     raise newException(ErrorFault, "fault")
   elif errno == EINVAL:
     raise newException(ErrorInvalid, "invalid")
+  elif errno == ECONNRESET:
+    raise newException(ErrorConnectionReset, "connection reset by peer")
   else:
     raise newException(IOError, $strerror(errno))