3 files changed, 10 insertions, 1 deletions

diff --git a/src/Graylog/Gelf.hs b/src/Graylog/Gelf.hs
index cd68e05..ee17e3d 100644
--- a/src/Graylog/Gelf.hs
+++ b/src/Graylog/Gelf.hs
@@ -2,6 +2,8 @@
 {-# LANGUAGE DeriveGeneric      #-}
 {-# LANGUAGE OverloadedStrings  #-}
 
+-- | Default formatting for Graylog messages,
+-- see http://docs.graylog.org/en/latest/pages/gelf.html
 module Graylog.Gelf where
 
 import           Data.Aeson        (ToJSON (..), Value (..), genericToJSON,
diff --git a/src/Graylog/Types.hs b/src/Graylog/Types.hs
index 5c32a8b..5ec779b 100644
--- a/src/Graylog/Types.hs
+++ b/src/Graylog/Types.hs
@@ -22,8 +22,11 @@ import qualified Data.Text      as T
 import           Network.BSD
 import           Network.Socket
 
+-- | The maximum size of each datagram when using UDP transit methods.
 type ChunkSize = Word
 
+-- | Handle for a socket connected to Graylog. In some cases this socket
+-- is UDP and will not have a maintained session.
 data Graylog
    = Graylog
       { _graylogHost      :: String
@@ -38,7 +41,10 @@ defaultChunkSize :: ChunkSize
 defaultChunkSize = 8192
 
 openGraylog
-   :: HostName -> ServiceName -> ChunkSize -> IO (Either String Graylog)
+   :: HostName          -- ^ The host on which graylog is running.
+   -> ServiceName       -- ^ The port on which graylog is running.
+   -> ChunkSize         -- ^ The maximum size of each UDP datagram.
+   -> IO (Either String Graylog)
 openGraylog h p cksize
    | cksize < 1024 = return $ Left "ChunkSize must be at least 1024."
    | otherwise     = getAddrInfo Nothing (Just h) (Just p) >>= \case
diff --git a/src/Graylog/UDP.hs b/src/Graylog/UDP.hs
index cd7fe5a..7c8eb84 100644
--- a/src/Graylog/UDP.hs
+++ b/src/Graylog/UDP.hs
@@ -1,3 +1,4 @@
+-- | UDP Chunked support for sending messages to graylog.
 module Graylog.UDP
    ( sendLog