Associate the HttpResponse with the source HttpRequest (#103)

Author: mickael-menu

readium/shared/src/main/java/org/readium/r2/shared/util/http/DefaultHttpClient.kt

@@ -120,6 +120,7 @@ class DefaultHttpClient constructor(
                     }
 
                     val response = HttpResponse(
+                        request = request,
                         url = connection.url.toString(),
                         statusCode = statusCode,
                         headers = connection.safeHeaders,

readium/shared/src/main/java/org/readium/r2/shared/util/http/HttpClient.kt

@@ -95,13 +95,15 @@ class HttpFetchResponse(
 /**
  * Represents a successful HTTP response received from a server.
  *
+ * @param request Request associated with the response.
  * @param url Final URL of the response.
  * @param statusCode Response status code.
  * @param headers HTTP response headers, indexed by their name.
  * @param mediaType Media type sniffed from the `Content-Type` header and response body. Falls back
  *        on `application/octet-stream`.
  */
 data class HttpResponse(
+    val request: HttpRequest,
     val url: String,
     val statusCode: Int,
     val headers: Map<String, List<String>>,