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comparison lib/js/urweb.js @ 1691:ea292bf9431f

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Avoid URL size limit in RPCs with large arguments
author Adam Chlipala <adam@chlipala.net>
date Sat, 03 Mar 2012 16:41:20 -0500
parents 225b87d4a7df
children 06791667937e
comparison
equal deleted inserted replaced
1690:a7b70c7b3f1a 1691:ea292bf9431f
1135 for (; inFlight; inFlight = inFlight.next) { 1135 for (; inFlight; inFlight = inFlight.next) {
1136 inFlight.data.abort(); 1136 inFlight.data.abort();
1137 } 1137 }
1138 } 1138 }
1139 1139
1140 function requestUri(xhr, uri, needsSig) { 1140 function requestUri(xhr, uri, needsSig, isRpc) {
1141 if (unloading) 1141 if (unloading)
1142 return; 1142 return;
1143
1144 var extraData = null;
1145
1146 if (isRpc && uri.length > 2000) {
1147 extraData = uri.substring(2000);
1148 uri = uri.substring(0, 2000);
1149 }
1143 1150
1144 xhr.open("POST", uri, true); 1151 xhr.open("POST", uri, true);
1145 xhr.setRequestHeader("Content-type", "text/plain"); 1152 xhr.setRequestHeader("Content-type", "text/plain");
1146 try { 1153 try {
1147 xhr.setRequestHeader("Content-length", "0"); 1154 xhr.setRequestHeader("Content-length", "0");
1159 1166
1160 xhr.setRequestHeader("UrWeb-Sig", sig); 1167 xhr.setRequestHeader("UrWeb-Sig", sig);
1161 } 1168 }
1162 1169
1163 inFlight = cons(xhr, inFlight); 1170 inFlight = cons(xhr, inFlight);
1164 xhr.send(null); 1171 xhr.send(extraData);
1165 } 1172 }
1166 1173
1167 function xhrFinished(xhr) { 1174 function xhrFinished(xhr) {
1168 xhr.abort(); 1175 xhr.abort();
1169 inFlight = remove(xhr, inFlight); 1176 inFlight = remove(xhr, inFlight);
1209 1216
1210 xhrFinished(xhr); 1217 xhrFinished(xhr);
1211 } 1218 }
1212 }; 1219 };
1213 1220
1214 requestUri(xhr, uri, needsSig); 1221 requestUri(xhr, uri, needsSig, true);
1215 } 1222 }
1216 1223
1217 function path_join(s1, s2) { 1224 function path_join(s1, s2) {
1218 if (s1.length > 0 && s1.charAt(s1.length-1) == '/') 1225 if (s1.length > 0 && s1.charAt(s1.length-1) == '/')
1219 return s1 + s2; 1226 return s1 + s2;
1258 var tid, orsc, onTimeout; 1265 var tid, orsc, onTimeout;
1259 1266
1260 var connect = function () { 1267 var connect = function () {
1261 xhr.onreadystatechange = orsc; 1268 xhr.onreadystatechange = orsc;
1262 tid = window.setTimeout(onTimeout, timeout * 500); 1269 tid = window.setTimeout(onTimeout, timeout * 500);
1263 requestUri(xhr, uri, false); 1270 requestUri(xhr, uri, false, false);
1264 } 1271 }
1265 1272
1266 orsc = function() { 1273 orsc = function() {
1267 if (xhr.readyState == 4) { 1274 if (xhr.readyState == 4) {
1268 window.clearTimeout(tid); 1275 window.clearTimeout(tid);