Discovering the IP address of Azure Functions

Is there a way to retrieve the IP address of an Azure function?

I am looking for a method to make a request to the function and receive its IP address in return.

I attempted the following code, but it hung indefinitely without generating any results:

import { AzureFunction, Context, HttpRequest } from "@azure/functions";

const httpTrigger: AzureFunction = function (context: Context, req: HttpRequest): void {
    console.log("HTTP trigger function processed a request.");

    const ip = req.headers["x-forwarded-for"] as string;

    context.res = {
        body: { ip },
        status: 200
    };
};

export default httpTrigger;

Answer №1

In order to successfully return when not using an async Azure function, make sure to call context.done() after setting context.res.

It is strongly recommended by Microsoft to utilize async functions.

import { AzureFunction, Context, HttpRequest } from "@azure/functions";

const httpTrigger: AzureFunction = function (context: Context, req: HttpRequest): void {
    console.log("Processing a request in the HTTP trigger function.");

    const ip = req.headers["x-forwarded-for"] as string;

    context.res = {
        body: { ip },
        status: 200
    };
    context.done();
};

export default httpTrigger;

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