httputil | various functions to work on HTTP resources | HTTP library

I have run in to this issue twice.

The first time was with a reverse proxy that lived inside an IPv6 only server network. Client requests come in through NAT46. The source-IP of the request becomes [fixed 96-bit prefix] + [32-bit client IPv4 address]. This means that the reverse proxy could always identify the real client IP. I couldn't find a way to set the X-Forwarded-For header to that address though. I got around it by modifying the backend server.

This time I have a reverse proxy which will run on Google App Engine. Requests hit Google's load balancer first, which adds the X-Forwarded-For header and forwards the request to my app. I want to modify the request a bit and then pass it to a backend server, which I cannot modify. The back-end needs the original client IP, and can accept it via X-Forwarded-For (it's authenticated, don't worry). In this case I want to pass the X-Forwarded-For header from Google's load balencer through unmodified.

It seems like there is no way to set X-Forwarded-For to a value that I chose when using httputil.ReverseProxy. If I set it (option 1 below) the client address from the TCP connection will be appended. If if I set it to nil (option 2 below), it is omitted like the documentation suggests, but that's not what I want either.

I am wondering if it would be possible to cancel a web request or send an internal response to the client inside the ReverseProxy.Director function.

Suppose we do something that throws an error, or we have other reason to not forward the request.

I already figured out how to use UrlDecode in PowerShell:

I’m working on proxy server with gin and ServeHTTP. 
Actually GET and OPTIONS request works well. But when I trying multiples POST request I get EOF error one in two request. I’ve test to make repeat request without proxy service and its work well, so there is something not working in my code.

Edit :

1. I have test POST proxy with https://ptsv2.com/ and all request response return 200 status code.

I am facing a weird error in my Android Xamarin Forms app. Unable to find the root cause of it. Following is my code which gets the API response and deserializes it to an object.

I feel like I'm close to having this working but so far I"m running into an issue building a small reverse proxy in Go to a GCP Cloud Run instance. The request 'goes through' but the response from the request is the default GCP Cloud Run 404. It appears when making the request back to Cloud Run the Host header is being ignored and therefore the request is not being routed correction.

What might I be missing here?

I have a script that parses a URL. If the query contains the user and the password, it will retrieve this.

I would therefore like to keep the PHP query if necessary.

I have an app in which a button starts creating XMLs. In the end of each XML creation, the SendInvoice function sends it, receives the response and a function (ParseResponse) parses the responses and does the database operations needed.

The idea is that when all the XMLs are created and sent, the application must close. The problem is that I have lost control with async and the application seems to close before it actually finishes all the jobs. Also XMLs are sent before the previous have been processed.

The ParseResponse function is not asynchronous.

Here is the SendInvoice function.

Can you suggest any good practise?

Thank you in advance.

I am trying to connect to Snowflake using HikariPool. I am using SpringBoot and Gradle.

I added these dependencies to Gradle