Number error codes from 1 (fix #54)

doc/reference.xsl

@@ -5,7 +5,7 @@
   Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
 
   Distributed under the Boost Software License, Version 1.0. (See accompanying
-  file LICENSE_1_0.txt or copy at http://www.beast.org/LICENSE_1_0.txt)
+  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 -->
 
 <xsl:output method="text"/>

extras/beast/test/fail_counter.hpp

@@ -15,7 +15,9 @@ namespace test {
 
 enum error
 {
-    fail_error = 1
+    success = 0,
+
+    fail_error
 };
 
 namespace detail {

include/beast/http/parse_error.hpp

@@ -15,6 +15,8 @@ namespace http {
 
 enum class parse_error
 {
+    success = 0,
+
     connection_closed,
 
     bad_method,

include/beast/websocket/error.hpp

@@ -16,8 +16,10 @@ namespace websocket {
 /// Error codes returned from @ref stream operations.
 enum class error
 {
+    success = 0,
+
     /// Both sides performed a WebSocket close
-    closed = 1,
+    closed,
 
     /// WebSocket connection failed, protocol violation
     failed,