使用 node http 包似乎无法捕获由打开错误 URL 引起的异常。这是一个问题,因为它会杀死我的集群,我想保证它会永远存在
这是代码:(使用fibers.promise)
function openConnection(dest, port, contentType, method, throwErrorOnBadStatus)
{
"use strict";
assert.ok(dest, "generalUtilities.openConnection: dest is null");
//dest = dest.replace('//','/');
console.log('opening connection: ' + dest + " contentType: " + contentType);
var prom = promise(),
errProm = promise(),
ar = [],
urlParts = url.parse(dest),
httpClient,
req,
got,
res;
//console.log('urlParts.port: ' + urlParts.port);
if (port) {
urlParts.port = port;
} else if (!urlParts.port) {
urlParts.port = 80;
}
if (contentType) {
urlParts.accept = contentType;
} else {
urlParts.contentType = 'text/html';
}
if (!urlParts.method) {
if (method) {
urlParts.method = method;
} else {
urlParts.method = 'GET';
}
}
try {
httpClient = http.createClient(urlParts.port, urlParts.hostname);
req = httpClient.request(urlParts.method, urlParts.path, urlParts);
//console.log('req: ' + req);
//if (req.connection) {
// req.connection.setTimeout(HTTP_REQUEST_TIMEOUT);
//}
//else {
// throw new Error ("No Connection Established!");
//}
req.end();
req.on('response', prom);
req.on('error', errProm);
got = promise.waitAny(prom, errProm);
if (got === errProm) {
//assert.ifError(errProm.get(), HTTP_REQUEST_TIMEOUT_MSG + dest);
throw new Error(HTTP_REQUEST_TIMEOUT_MSG + dest + ': ' + got.get());
}
res = prom.get();
ar.res = res;
ar.statusCode = res.statusCode;
if (ar.statusCode >= 300 && throwErrorOnBadStatus) {
assert.ifError("page not found!");
}
return ar;
}
catch (err) {
console.log(err);
}
}
这就是我测试它的方法
var promise = require('fibers-promise');
var gu = require("../src/utils/generalutilities.js");
var brokenSite = 'http://foo.bar.com:94//foo.js';
promise.start(function () {
try {
gu.openConnection(brokenSite, null, null, "GET", true);
}
catch (err) {
console.log('got: ' + err);
}
});
当我运行此代码时,我得到:
错误:getaddrinfo ENOENT。它永远不会被 try catch 捕获