Messenger webhook 错误（curl_errno = 28）

Question

这是我的 node.js 代码

var fs = require("fs"),
    https = require("https"),
    express = require("express"),
    app = express();

https.createServer({
    ca: fs.readFileSync("sslcert/cpanel.ca"),
    key: fs.readFileSync("sslcert/cpanel.key"),
    cert: fs.readFileSync("sslcert/cpanel.crt"),
}, app).listen(444, function() {
    console.log("I'm working :)");
});

app.get("/webhook/", function(req, res) {
    if (req.query["hub.verify_token"] === "token") {
        res.send(req.query["hub.challenge"]);
    } else {
        res.send("Error, wrong validation token");
    }
});

而且我总是在 Facebook 的 "New Page Subscription" 页面上收到此错误。

The URL couldn't be validated. Callback verification failed with the following errors: curl_errno = 28; curl_error = Operation timed out after 0 milliseconds with 0 out of 0 bytes received; HTTP Message = Unknown Response Code

我的代码有问题吗？

Answer 1

当 https://host:port/ 不可访问时会发生此错误。确保 URL 可以从防火墙外部访问。

Messenger webhook 错误（curl_errno = 28）

Messenger webhook error (curl_errno = 28)

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