allow parsers to define a connection timeout, and channge it via callback

lib/httpx/connection.rb

@@ -434,6 +434,9 @@ module HTTPX
           transition(:open)
         end
       end
+      parser.on(:current_timeout) do
+        @current_timeout = @timeout = parser.timeout
+      end
       parser.on(:timeout) do |tout|
         @timeout = tout
       end
@@ -464,7 +467,7 @@ module HTTPX
 
         send_pending
 
-        @timeout = @current_timeout = @options.timeout[:operation_timeout]
+        @timeout = @current_timeout = parser.timeout
         emit(:open)
       when :closing
         return unless @state == :open

lib/httpx/connection/http1.rb

@@ -24,6 +24,10 @@ module HTTPX
       @handshake_completed = false
     end
 
+    def timeout
+      @options.timeout[:operation_timeout]
+    end
+
     def interests
       # this means we're processing incoming response already
       return :r if @request

lib/httpx/connection/http2.rb

@@ -34,6 +34,10 @@ module HTTPX
       init_connection
     end
 
+    def timeout
+      @options.timeout[:settings_timeout]
+    end
+
     def interests
       # waiting for WINDOW_UPDATE frames
       return :r if @buffer.full?
@@ -312,6 +316,7 @@ module HTTPX
 
     def on_settings(*)
       @handshake_completed = true
+      emit(:current_timeout)
 
       if @max_requests.zero?
         @max_requests = @connection.remote_settings[:settings_max_concurrent_streams]

lib/httpx/plugins/proxy/socks4.rb

@@ -85,6 +85,10 @@ module HTTPX
             @options = Options.new(options)
           end
 
+          def timeout
+            @options.timeout[:operation_timeout]
+          end
+
           def close; end
 
           def consume(*); end

lib/httpx/plugins/proxy/socks5.rb

@@ -133,6 +133,10 @@ module HTTPX
             @options = Options.new(options)
           end
 
+          def timeout
+            @options.timeout[:operation_timeout]
+          end
+
           def close; end
 
           def consume(*); end

sig/connection/http1.rbs

@@ -42,6 +42,8 @@ module HTTPX
 
     def ping: () -> void
 
+    def timeout: () -> Integer
+
     private
 
     def initialize: (Buffer, options) -> untyped

sig/connection/http2.rbs

@@ -35,6 +35,8 @@ module HTTPX
 
     alias reset init_connection
 
+    def timeout: () -> Integer
+
     private
 
     def initialize: (Buffer, options) -> untyped

sig/plugins/proxy/socks4.rbs

@@ -14,6 +14,7 @@ module HTTPX
         class SocksParser
           include Callbacks
 
+          def timeout: () -> Integer
           def close: () -> void
           def consume: (*untyped) -> void
           def empty: () -> bool

sig/plugins/proxy/socks5.rbs

@@ -15,6 +15,7 @@ module HTTPX
         class SocksParser
           include Callbacks
 
+          def timeout: () -> Integer
           def close: () -> void
           def consume: (*untyped) -> void
           def empty: () -> bool