Allow to specify timeout values using ENV vars (#2)

* Allow to specify timeout values using ENV vars
* Cleanup README formatting
* Sort env vars in alphabetical order
* Read config values straight from environment
* Revert code formatting

Signed-off-by: Andrejs Volkovs <[email protected]>

Dockerfile

@@ -12,6 +12,12 @@ ENV NAMESERVERS="208.67.222.222 8.8.8.8 208.67.220.220 8.8.4.4" \
     LISTEN=:100 \
     PRE_RESOLVE=0 \
     TALK=talk:100 \
+    TIMEOUT_CLIENT=5s \
+    TIMEOUT_CLIENT_FIN=5s \
+    TIMEOUT_CONNECT=5s \
+    TIMEOUT_SERVER=5s \
+    TIMEOUT_SERVER_FIN=5s \
+    TIMEOUT_TUNNEL=5s \
     UDP=0 \
     VERBOSE=0
 

README.md

@@ -42,13 +42,13 @@ and it must be written in the format used by the [`bind`][] directive.
 By default (`:100`), it listens in every connection at port 100 (port 100?
 that's stupid!... Yes, read the title :point_up::expressionless:).
 
-### `NAMESERVERS`
+#### `$NAMESERVERS`
 
 Default: `208.67.222.222 8.8.8.8 208.67.220.220 8.8.4.4` to use OpenDNS and Google DNS resolution servers by default.
 
 Only used when [pre-resolving](#pre-resolve) is enabled.
 
-### `PRE_RESOLVE`
+#### `$PRE_RESOLVE`
 
 Default: `0`
 
@@ -65,6 +65,42 @@ required by [HAProxy][]'s [`server`][] directive.
 
 By default (`talk:100`), it talks to a host named `talk` in port 100 too.
 
+#### `$TIMEOUT_CLIENT`
+
+Default: `5s`
+
+This variable sets the maximum inactivity time on the client side.
+
+#### `$TIMEOUT_CLIENT_FIN`
+
+Default: `5s`
+
+This variable sets the inactivity timeout on the client side for half-closed connections.
+
+#### `$TIMEOUT_CONNECT`
+
+Default: `5s`
+
+This variable sets the maximum time to wait for a connection attempt to a server to succeed.
+
+#### `$TIMEOUT_SERVER`
+
+Default: `5s`
+
+This variable sets the maximum inactivity time on the server side.
+
+#### `$TIMEOUT_SERVER_FIN`
+
+Default: `5s`
+
+This variable sets the inactivity timeout on the server side for half-closed connection.
+
+#### `$TIMEOUT_TUNNEL`
+
+Default: `5s`
+
+This variable sets the maximum inactivity time on the client and server side for tunnels.
+
 ### Multi-proxy mode
 
 This image supports proxying multiple ports at once, but keep in mind

magic-entrypoint.py

@@ -29,12 +29,12 @@
 defaults
     log global
     mode tcp
-    timeout client 5s
-    timeout client-fin 5s
-    timeout connect 5s
-    timeout server 5s
-    timeout server-fin 5s
-    timeout tunnel 5s
+    timeout client env(TIMEOUT_CLIENT)
+    timeout client-fin env(TIMEOUT_CLIENT_FIN)
+    timeout connect env(TIMEOUT_CONNECT)
+    timeout server env(TIMEOUT_SERVER)
+    timeout server-fin env(TIMEOUT_SERVER_FIN)
+    timeout tunnel env(TIMEOUT_TUNNEL)
 """
 
 if len(LISTENS) != len(TALKS):