GCD based, Asynchronous Implementation of the API

.gitignore

@@ -75,3 +75,5 @@ fastlane/test_output
 /Package.pins
 /Package.resolved
 docs
+.build-linux
+

README.md

@@ -12,7 +12,7 @@ The following code implements a very simple "Hello World!" server:
 import Foundation
 import HTTP
 
-func hello(request: HTTPRequest, response: HTTPResponseWriter ) -> HTTPBodyProcessing { 
+func hello(request: HTTPRequest, response: HTTPResponseWriter, queue: DispatchQueue ) -> HTTPBodyProcessing { 
     response.writeHeader(status: .ok) 
     response.writeBody("Hello, World!") 
     response.done() 
@@ -36,7 +36,7 @@ The following code implements a very simple Echo server that responds with the c
 import Foundation
 import HTTP
 
-func echo(request: HTTPRequest, response: HTTPResponseWriter ) -> HTTPBodyProcessing {
+func echo(request: HTTPRequest, response: HTTPResponseWriter, queue: DispatchQueue ) -> HTTPBodyProcessing {
     response.writeHeader(status: .ok)
     return .processBody { (chunk, stop) in
         switch chunk {

Sources/HTTP/HTTPCommon.swift

@@ -6,7 +6,7 @@
 // See http://swift.org/LICENSE.txt for license information
 //
 
-import Foundation
+import Dispatch
 
 /// Typealias for a closure that handles an incoming HTTP request
 /// The following is an example of an echo `HTTPRequestHandler` that returns the request it receives as a response:
@@ -32,7 +32,7 @@ import Foundation
 /// - Parameter req: the incoming HTTP request.
 /// - Parameter res: a writer providing functions to create an HTTP reponse to the request.
 /// - Returns HTTPBodyProcessing: a enum that either discards the request data, or provides a closure to process it.
-public typealias HTTPRequestHandler = (HTTPRequest, HTTPResponseWriter) -> HTTPBodyProcessing
+public typealias HTTPRequestHandler = (HTTPRequest, HTTPResponseWriter, DispatchQueue) -> HTTPBodyProcessing
 
 /// Class protocol containing a `handle()` function that implements `HTTPRequestHandler` to respond to incoming HTTP requests.
 /// - See: `HTTPRequestHandler` for more information
@@ -42,7 +42,7 @@ public protocol HTTPRequestHandling: class {
     /// - Parameter response: a writer providing functions to create an HTTP response to the request.
     /// - Returns HTTPBodyProcessing: a enum that either discards the request data, or provides a closure to process it.
     /// - See: `HTTPRequestHandler` for more information
-    func handle(request: HTTPRequest, response: HTTPResponseWriter) -> HTTPBodyProcessing
+    func handle(request: HTTPRequest, response: HTTPResponseWriter, queue: DispatchQueue) -> HTTPBodyProcessing
 }
 
 /// The result returned as part of a completion handler