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<!DOCTYPE html> |
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<meta charset="utf-8" /> |
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<html> |
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<head> |
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<script language="javascript" type="text/javascript"> |
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var socket = null; |
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function log(msg) { |
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const logElem = document.getElementById("log"); |
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const p = document.createElement("p"); |
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p.textContent = msg; |
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logElem.appendChild(p); |
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logElem.scroll(0, logElem.scrollHeight); |
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} |
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function connect() { |
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disconnect(); |
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socket = new WebSocket(document.getElementById("wsUri").value); |
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log("Connecting..."); |
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socket.addEventListener("open", function() { |
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log("Connected."); |
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update_ui(); |
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}); |
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socket.addEventListener("message", function(e) { |
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log("Received: " + e.data); |
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}); |
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socket.addEventListener("close", function() { |
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log("Disconnected."); |
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socket = null; |
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update_ui(); |
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}); |
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} |
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function disconnect() { |
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if (socket !== null) { |
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log("Disconnecting..."); |
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socket.close(); |
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socket = null; |
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update_ui(); |
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} |
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} |
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function update_ui() { |
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const status = document.getElementById("status"); |
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const connect = document.getElementById("connect"); |
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if (socket === null) { |
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status.innerText = "disconnected"; |
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connect.innerText = "Connect"; |
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} else { |
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status.innerText = "connected (" + socket.protocol + ")"; |
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connect.innerText = "Disconnect"; |
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} |
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} |
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window.addEventListener("DOMContentLoaded", function() { |
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const protocol = (window.location.protocol=="https:" && "wss://" || "ws://"); |
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document.getElementById("wsUri").value = protocol + (window.location.host || "localhost:8080"); |
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document.getElementById("connect").addEventListener("click", function() { |
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if (socket == null) { |
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connect(); |
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} else { |
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disconnect(); |
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} |
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update_ui(); |
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return false; |
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}); |
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document.getElementById("send").addEventListener("click", function() { |
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const text = document.getElementById("text"); |
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log("Sending: " + text.value); |
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socket.send(text.value); |
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text.value = ""; |
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text.focus(); |
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return false; |
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}); |
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document.getElementById("text").addEventListener("keyup", function(e) { |
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if (e.keyCode === 13) { |
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document.getElementById("send").click(); |
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return false; |
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} |
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}); |
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}); |
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</script> |
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</head> |
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<body> |
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<h3>Chat!</h3> |
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<div> |
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<input id="wsUri" type="text" /> |
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<button id="connect">Connect</button> | Status: |
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<span id="status">disconnected</span> |
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</div> |
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<div id="log" |
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style="width:20em;height:15em;overflow:auto;border:1px solid black"> |
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</div> |
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<form id="chatform" onsubmit="return false;"> |
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<input id="text" type="text" /> |
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<input id="send" type="button" value="Send" /> |
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</form> |
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</body> |
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</html> |
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