Mercurial > urweb
diff lib/js/urweb.js @ 673:a8effb6159c2
Variable timeouts and client keep-alive
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Tue, 24 Mar 2009 15:35:46 -0400 |
parents | df6eb58de040 |
children | 44f23712020d |
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--- a/lib/js/urweb.js Tue Mar 24 15:05:28 2009 -0400 +++ b/lib/js/urweb.js Tue Mar 24 15:35:46 2009 -0400 @@ -141,6 +141,7 @@ var client_id = 0; var client_pass = 0; var url_prefix = "/"; +var timeout = 60; function getXHR(uri) { @@ -234,8 +235,18 @@ function listener() { var uri = path_join(url_prefix, ".msgs"); var xhr = getXHR(); - var orsc = function() { + var tid, orsc, onTimeout; + + var connect = function () { + xhr.onreadystatechange = orsc; + tid = window.setTimeout(onTimeout, timeout * 500); + requestUri(xhr, uri); + } + + orsc = function() { if (xhr.readyState == 4) { + window.clearTimeout(tid); + var isok = false; try { @@ -271,8 +282,7 @@ } } - xhr.onreadystatechange = orsc; - requestUri(xhr, uri); + connect(); } else { try { @@ -282,8 +292,12 @@ } }; - xhr.onreadystatechange = orsc; - requestUri(xhr, uri); + onTimeout = function() { + xhr.abort(); + connect(); + }; + + connect(); } function rv(chn, parse, k) {