RLGWebD: rlgterm.js comparison

comparison rlgterm.js @ 75:2984604ce3e6

Begin handling XMLHttpRequest errors. Add an error handler to the various XMLHttpRequest objects. Eventually it will inform the user if the server is unreachable.

author	John "Elwin" Edwards <elwin@sdf.org>
date	Thu, 21 Jun 2012 23:44:51 -0700
parents	d084610a89b5
children	a497ecd116d9

comparison

equal deleted inserted replaced

-:b8b7660c0b5d
+:2984604ce3e6
 function getData() {
 if (session.id == null)
 return;
 var datareq = new XMLHttpRequest();
 var msg = JSON.stringify({"id": session.id, "t": "n"});
+datareq.onerror = errHandler;
 datareq.onreadystatechange = function () {
 if (datareq.readyState == 4 && datareq.status == 200) {
 var wasdata = processMsg(datareq.responseText);
 if (wasdata != null) {
 if (wasdata)
 ajaxstate.posted();
 return;
 }
 }
+function errHandler() {
+debug(1, "Server unavailable?");
+}
 function sendback(str) {
 /* For responding to terminal queries. */
 var msgDict = {"id": session.id, "t": "d", "n": nsend++, "d": str};
 var datareq = new XMLHttpRequest();
+datareq.onerror = errHandler;
 datareq.onreadystatechange = postResponseHandler;
 datareq.open('POST', '/feed', true);
 datareq.send(JSON.stringify(msgDict));
 return;
 }
 return;
 }
 ev.preventDefault();
 var datareq = new XMLHttpRequest();
 var msgDict = {"id": session.id, "t": "d", "n": nsend++, "d": code};
+datareq.onerror = errHandler;
 datareq.onreadystatechange = postResponseHandler;
 datareq.open('POST', '/feed', true);
 datareq.send(JSON.stringify(msgDict));
 return;
 }
 }
 else
 return;
 var datareq = new XMLHttpRequest();
 var msgDict = {"id": session.id, "t": "d", "n": nsend++, "d": keystr};
+datareq.onerror = errHandler;
 datareq.onreadystatechange = postResponseHandler;
 datareq.open('POST', '/feed', true);
 datareq.send(JSON.stringify(msgDict));
 return;
 }
 return;
 var loginmsg = {};
 loginmsg["name"] = document.getElementById("input_name").value;
 loginmsg["pw"] = document.getElementById("input_pw").value;
 var req = new XMLHttpRequest();
+req.onerror = errHandler;
 req.onreadystatechange = function () {
 if (req.readyState != 4 || req.status != 200)
 return;
 var reply = JSON.parse(req.responseText);
 if (reply.t == 'l') {
 }
 if (!statInterval) {
 statInterval = window.setInterval(getcurrent, statDelta);
 }
 var req = new XMLHttpRequest();
+req.onerror = errHandler;
 req.onreadystatechange = function () {
 if (req.readyState != 4 || req.status != 200)
 return;
 var reply;
 try {
 function getchoices() {
 if (session.id != null || !session.lcred)
 return;
 var req = new XMLHttpRequest();
+req.onerror = errHandler;
 req.onreadystatechange = function () {
 if (req.readyState != 4 || req.status != 200)
 return;
 var reply;
 try {
 smsg["key"] = session.lcred;
 smsg["game"] = game.uname;
 smsg["h"] = 24;
 smsg["w"] = 80;
 var req = new XMLHttpRequest();
+req.onerror = errHandler;
 req.onreadystatechange = function () {
 if (req.readyState != 4 || req.status != 200)
 return;
 var reply = JSON.parse(req.responseText);
 if (reply.t == 's') {
 function startwatching(gamenumber) {
 if (session.id != null)
 return;
 var wmsg = {"n": Number(gamenumber)};
 var req = new XMLHttpRequest();
+req.onerror = errHandler;
 req.onreadystatechange = function () {
 if (req.readyState != 4 || req.status != 200)
 return;
 var reply = JSON.parse(req.responseText);
 if (reply.t == 'w') {
 var regmsg = {};
 regmsg["name"] = document.getElementById("regin_name").value;
 regmsg["pw"] = document.getElementById("regin_pw").value;
 regmsg["email"] = document.getElementById("regin_email").value;
 var req = new XMLHttpRequest();
+req.onerror = errHandler;
 req.onreadystatechange = function () {
 if (req.readyState != 4 || req.status != 200)
 return;
 var reply = JSON.parse(req.responseText);
 if (reply.t == 'r') {
 function stop() {
 if (!session.id)
 return;
 var req = new XMLHttpRequest();
+req.onerror = errHandler;
 req.onreadystatechange = function () {
 if (req.readyState == 4 && req.status == 200) {
 processMsg(req.responseText);
 return;
 }