From 2fc9fd22084bb4a89a72be525c18fc409303ada5 Mon Sep 17 00:00:00 2001
From: Li Haoyi <haoyi.sg@gmail.com>
Date: Mon, 13 Aug 2018 03:54:50 +0800
Subject: Basic websocket support works

---
 example/endpoints/app/src/Endpoints.scala          |  5 ++-
 example/websockets/app/src/Websockets.scala        | 29 +++++++++++++
 example/websockets/app/test/src/ExampleTests.scala | 47 ++++++++++++++++++++++
 example/websockets/build.sc                        | 19 +++++++++
 4 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 example/websockets/app/src/Websockets.scala
 create mode 100644 example/websockets/app/test/src/ExampleTests.scala
 create mode 100644 example/websockets/build.sc

(limited to 'example')

diff --git a/example/endpoints/app/src/Endpoints.scala b/example/endpoints/app/src/Endpoints.scala
index e2a14dc..9eadf39 100644
--- a/example/endpoints/app/src/Endpoints.scala
+++ b/example/endpoints/app/src/Endpoints.scala
@@ -1,7 +1,10 @@
 package app
 
+import cask.main.HttpDecorator
+import cask.model.ParamContext
 
-class custom(val path: String, val methods: Seq[String]) extends cask.Endpoint{
+
+class custom(val path: String, val methods: Seq[String]) extends cask.Endpoint with HttpDecorator{
   type Output = Int
   def wrapFunction(ctx: cask.ParamContext, delegate: Delegate): Returned = {
     delegate(Map()).map{num =>
diff --git a/example/websockets/app/src/Websockets.scala b/example/websockets/app/src/Websockets.scala
new file mode 100644
index 0000000..277b06f
--- /dev/null
+++ b/example/websockets/app/src/Websockets.scala
@@ -0,0 +1,29 @@
+package app
+
+import io.undertow.websockets.WebSocketConnectionCallback
+import io.undertow.websockets.core.{AbstractReceiveListener, BufferedTextMessage, WebSocketChannel, WebSockets}
+import io.undertow.websockets.spi.WebSocketHttpExchange
+
+object Websockets extends cask.MainRoutes{
+  @cask.websocket("/connect/:userName")
+  def showUserProfile(userName: String): cask.WebsocketResult = {
+    if (userName != "haoyi") cask.Response("", statusCode = 403)
+    else new WebSocketConnectionCallback() {
+      override def onConnect(exchange: WebSocketHttpExchange, channel: WebSocketChannel): Unit = {
+        channel.getReceiveSetter.set(
+          new AbstractReceiveListener() {
+            override def onFullTextMessage(channel: WebSocketChannel, message: BufferedTextMessage) = {
+              val data = message.getData
+              if (data == "") channel.close()
+              else WebSockets.sendTextBlocking(userName + " " + data, channel)
+            }
+          }
+        )
+        channel.resumeReceives()
+
+      }
+    }
+  }
+
+  initialize()
+}
diff --git a/example/websockets/app/test/src/ExampleTests.scala b/example/websockets/app/test/src/ExampleTests.scala
new file mode 100644
index 0000000..01863e8
--- /dev/null
+++ b/example/websockets/app/test/src/ExampleTests.scala
@@ -0,0 +1,47 @@
+package app
+import com.github.andyglow.websocket.WebsocketClient
+import utest._
+
+object ExampleTests extends TestSuite{
+  def test[T](example: cask.main.BaseMain)(f: String => T): T = {
+    val server = io.undertow.Undertow.builder
+      .addHttpListener(8080, "localhost")
+      .setHandler(example.defaultHandler)
+      .build
+    server.start()
+    val res =
+      try f("http://localhost:8080")
+      finally server.stop()
+    res
+  }
+
+  val tests = Tests{
+    'VariableRoutes - test(Websockets){ host =>
+      @volatile var out = List.empty[String]
+      val cli = WebsocketClient[String]("ws://localhost:8080/connect/haoyi") {
+        case str => out = str :: out
+      }
+
+      // 4. open websocket
+      val ws = cli.open()
+
+      // 5. send messages
+      ws ! "hello"
+      ws ! "world"
+      ws ! ""
+      Thread.sleep(100)
+      out ==> List("haoyi world", "haoyi hello")
+
+      val cli2 = WebsocketClient[String]("ws://localhost:8080/connect/nobody") {
+        case str => out = str :: out
+      }
+
+      val error =
+        try cli2.open()
+        catch{case e: Throwable => e.getMessage}
+
+      assert(error.toString.contains("Invalid handshake response getStatus: 403 Forbidden"))
+    }
+
+  }
+}
diff --git a/example/websockets/build.sc b/example/websockets/build.sc
new file mode 100644
index 0000000..bc8cf26
--- /dev/null
+++ b/example/websockets/build.sc
@@ -0,0 +1,19 @@
+import mill._, scalalib._
+
+
+trait AppModule extends ScalaModule{
+  def scalaVersion = "2.12.6"
+  def ivyDeps = Agg(
+    ivy"com.lihaoyi::cask:0.0.1",
+  )
+
+  object test extends Tests{
+    def testFrameworks = Seq("utest.runner.Framework")
+
+    def ivyDeps = Agg(
+      ivy"com.lihaoyi::utest::0.6.3",
+      ivy"com.lihaoyi::requests::0.1.2",
+      ivy"com.github.andyglow::websocket-scala-client:0.2.4"
+    )
+  }
+}
\ No newline at end of file
-- 
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