TitleCrawlerHandler : Use TitleCrawler.

src/main/scala/model/crawler/TitleCrawler.scala

@@ -5,5 +5,7 @@ package model.crawler
  * A crawler that extracts Http Head Title.
  */
 class TitleCrawler extends Crawler {
-	
+	override def crawl(url: String): String = {
+		"Mock title."
+	}
 }

src/main/scala/model/handler/TitleCrawlerHandler.scala

@@ -1,32 +1,52 @@
 package com.voronind.doublegis.test
 package model.handler
 
-import model.lib.StreamUtil
+import model.lib.{HttpUtil, StreamUtil}
+
 import com.sun.net.httpserver.{HttpExchange, HttpHandler}
-import java.io.InputStream
+import com.voronind.doublegis.test.model.crawler.TitleCrawler
+
+import java.io.{BufferedReader, ByteArrayInputStream, InputStream, InputStreamReader}
+import scala.language.postfixOps
 
 /**
  * Handle Http Title crawling.
  */
 class TitleCrawlerHandler extends HttpHandler, Handler {
 	override def handle(exchange: HttpExchange): Unit = {
-		log(exchange.getRequestBody)
-		sendResponse(exchange)
+		val body = exchange.getRequestBody.readAllBytes()
+		log(body)
+		exchange.sendResponse(body)
 	}
 
-	private def log(body: InputStream): Unit = {
+	private def log(body: Array[Byte]): Unit = {
 		println(f"${TitleCrawlerHandler.CONTEXT}%s : Got payload.")
-		StreamUtil.copyStream(body, System.out)
+		System.out.write(body)
 		println()
 	}
 
-	private def sendResponse(exchange: HttpExchange): Unit = {
-		val response = "Ack!"
+	// I don't know if this one is ugly, but I wanted to show off a bit.
+	extension (exchange: HttpExchange) private def sendResponse(request: Array[Byte]): Unit = {
+		val reader = new BufferedReader(new InputStreamReader(ByteArrayInputStream(request)))
+
+		val result = Iterator
+			.continually(reader.readLine)
+			.takeWhile(null !=)
+			.filter(HttpUtil.isUrl)
+			.map({ url => f"$url => ${runCrawler(url)}" })
+			.toList
+
+		val response = result.mkString("\n")
 		exchange.sendResponseHeaders(200, response.length())
+
 		val out = exchange.getResponseBody
 		out.write(response.getBytes)
 		out.close()
 	}
+
+	private def runCrawler(url: String): String = {
+		new TitleCrawler().crawl(url)
+	}
 }
 
 object TitleCrawlerHandler extends HandlerCompanion {

src/main/scala/model/lib/HttpUtil.scala

@@ -0,0 +1,18 @@
+package com.voronind.doublegis.test
+package model.lib
+
+import java.net.{MalformedURLException, URL}
+
+object HttpUtil {
+	def isUrl(url: String): Boolean = {
+		try {
+			new URL(url)
+			true
+		} catch {
+			case e: MalformedURLException => {
+				println(f"Got malformed URL: $url%s")
+				false
+			}
+		}
+	}
+}

src/main/scala/model/server/TitleCrawlerServer.scala

@@ -13,6 +13,7 @@ class TitleCrawlerServer extends Server {
 
 		server.start()
 
+		// TODO: Should have a proper SIGINT handler.
 		println("Server started! Input any key to exit.")
 		System.in.read()
 		server.stop(0)