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+<!DOCTYPE html>
+
+<meta charset="utf-8">
+<title>Sending a message through PresentationConnection</title>
+<link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs/">
+<link rel="help" href="http://w3c.github.io/presentation-api/#sending-a-message-through-presentationconnection">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="common.js"></script>
+<script src="support/stash.js"></script>
+
+<p id="notice">
+  Click the button below and select the available presentation display, to start the manual test. The test passes if a "PASS" result appears.<br>
+  <button id="presentBtn">Start Presentation Test</button>
+</p>
+
+<script>
+    setup({explicit_timeout: true});
+
+    const presentBtn = document.getElementById('presentBtn');
+
+    const message1 = '1st';
+    const message2 = '2nd';
+    const message3 = new Uint8Array([51, 114, 100]);      // "3rd"
+    const message4 = new Uint8Array([52, 116, 104]);      // "4th"
+    const message5 = new Uint8Array([108, 97, 115, 116]); // "last"
+
+    const toUint8Array = buf => {
+        return buf instanceof ArrayBuffer ? new Uint8Array(buf) : buf;
+    }
+
+    // convert ArrayBuffer or Uint8Array into string
+    const toText = buf => {
+        const arr = toUint8Array(buf);
+        return !buf ? null : arr.reduce((result, item) => {
+            return result + String.fromCharCode(item);
+        }, '');
+    }
+
+    promise_test(t => {
+        const clickWatcher = new EventWatcher(t, presentBtn, 'click');
+        const stash = new Stash(stashIds.toController, stashIds.toReceiver);
+        const request = new PresentationRequest(presentationUrls);
+        let connection, watcher;
+
+        t.add_cleanup(() => {
+            if (connection) {
+                connection.onconnect = () => { connection.terminate(); };
+                if (connection.state === 'closed')
+                    request.reconnect(connection.id);
+                else
+                    connection.terminate();
+            }
+            const notice = document.getElementById('notice');
+            notice.parentNode.removeChild(notice);
+            stash.stop();
+        });
+
+        return clickWatcher.wait_for('click').then(() => {
+            presentBtn.disabled = true;
+
+            return request.start();
+        }).then(c => {
+            connection = c;
+
+            // send data in "connecting" state (throws an exception)
+            assert_equals(connection.state, 'connecting', 'the initial state of the presentation connection is "connecting"');
+            assert_throws_dom('InvalidStateError', () => {
+                connection.send('');
+            }, 'an InvalidStateError is thrown if the state is "connecting"');
+
+            // enable timeout again, cause no user action is needed from here.
+            t.step_timeout(() => {
+                t.force_timeout();
+                t.done();
+            }, 10000);
+
+            watcher = new EventWatcher(t, connection, ['connect', 'close', 'terminate']);
+            return watcher.wait_for('connect');
+        }).then(() => {
+            return stash.init();
+        }).then(() => {
+            return Promise.all([ stash.send('send'), stash.receive() ]);
+        }).then(results => {
+            // send messages
+            connection.send(message1);              // string
+            connection.send(message2);              // string
+            connection.send(new Blob([message3]));  // Blob
+            connection.send(message4.buffer);       // ArrayBuffer
+            connection.send(message5);              // ArrayBufferView
+            return stash.receive();
+        }).then(stash => {
+            // verify messages
+            const results = JSON.parse(stash);
+            assert_true(!!results[0] && results[0].type === 'text'   && results[0].data === message1,          'send a string correctly');
+            assert_true(!!results[1] && results[1].type === 'text'   && results[1].data === message2,          'send a string correctly');
+            assert_true(!!results[2] && results[2].type === 'binary' && results[2].data === toText(message3), 'send a Blob correctly');
+            assert_true(!!results[3] && results[3].type === 'binary' && results[3].data === toText(message4), 'send a ArrayBuffer correctly');
+            assert_true(!!results[4] && results[4].type === 'binary' && results[4].data === toText(message5), 'send a ArrayBufferView correctly');
+
+            // send data in "closed" state (throws an exception)
+            connection.close();
+            return watcher.wait_for('close');
+        }).then(() => {
+            assert_equals(connection.state, 'closed', 'the state is set to "closed" when the presentation connection is closed');
+            assert_throws_dom('InvalidStateError', () => {
+                connection.send('');
+            }, 'an InvalidStateError is thrown if the state is "closed"');
+
+            // reconnect and terminate the connection
+            return request.reconnect(connection.id);
+        }).then(() => {
+            return watcher.wait_for('connect');
+        }).then(() => {
+            // send data in "terminated" state (throws an exception)
+            connection.terminate();
+            return watcher.wait_for('terminate');
+        }).then(() => {
+            assert_equals(connection.state, 'terminated', 'the state is set to "terminated" when the presentation connection is terminated');
+            assert_throws_dom('InvalidStateError', () => {
+                connection.send('');
+            }, 'an InvalidStateError is thrown if the state is "terminated"');
+        });
+    });
+</script>