node.js AWS Lambda 中的 HTTP 请求
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/31812846/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
HTTP Requests in an AWS Lambda
提问by kevin628
I'm new to Lambdas so perhaps there is something I've not caught on to just yet, but I've written a simple Lambda function to do an HTTP request to an external site. For some reason, whether I use Node's httpor httpsmodules, I get an ECONNREFUSED.
我是 Lambdas 的新手，所以也许我还没有理解一些东西，但我已经编写了一个简单的 Lambda 函数来向外部站点发出 HTTP 请求。出于某种原因，无论我使用 Nodehttp还是https模块，我都会得到一个ECONNREFUSED.
Here's my Lambda:
这是我的 Lambda：
var http = require('http');
exports.handler = function (event, context) {
http.get('www.google.com', function (result) {
console.log('Success, with: ' + result.statusCode);
context.done(null);
}).on('error', function (err) {
console.log('Error, with: ' + err.message);
context.done("Failed");
});
};
Here's the log output:
这是日志输出：
START RequestId: request hash
2015-08-04T14:57:56.744Z request hash Error, with: connect ECONNREFUSED
2015-08-04T14:57:56.744Z request hash {"errorMessage":"Failed"}
END RequestId: request hash
Is there a role permission I need to have to do HTTP requests? Does Lambda even permit plain old HTTP requests? Are there special headers I need to set?
是否需要角色权限才能执行 HTTP 请求？Lambda 甚至允许普通的旧 HTTP 请求吗？我需要设置特殊的标题吗？
Any guidance is appreciated.
任何指导表示赞赏。
采纳答案by kevin628
I solved my own problem.
我解决了我自己的问题。
Apparently, if you decide to feed the URL in as the first parameter to .get(), you must include the http://up front of the URL, e.g., http://www.google.com.
显然，如果您决定将 URL 作为第一个参数提供给.get()，则必须包含http://URL 的前面，例如，http://www.google.com。
var http = require('http');
exports.handler = function (event, context) {
http.get('http://www.google.com', function (result) {
console.log('Success, with: ' + result.statusCode);
context.done(null);
}).on('error', function (err) {
console.log('Error, with: ' + err.message);
context.done("Failed");
});
};
Alternatively, you can specify the first parameter as a hash of options, where hostnamecan be the simple form of the URL. Example:
或者，您可以将第一个参数指定为 options的散列，其中hostname可以是 URL 的简单形式。例子：
var http = require('http');
exports.handler = function (event, context) {
var getConfig = {
hostname: 'www.google.com'
};
http.get(getConfig, function (result) {
console.log('Success, with: ' + result.statusCode);
context.done(null);
}).on('error', function (err) {
console.log('Error, with: ' + err.message);
context.done("Failed");
});
};
