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How to Get the Redirected Url In Golang?

5 minutes read

To get the redirected URL in Golang, you can use the http package provided by the standard library. When making a request to a URL that might redirect, you can follow the redirect by using the Client type and its Get method. The Get method will automatically follow redirects, and you can retrieve the final redirected URL from the Response object returned by the Get method. Here is an example code snippet that demonstrates how to get the redirected URL in Golang:

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package main

import (
	"fmt"
	"net/http"
)

func main() {
	url := "http://example.com"

	client := &http.Client{}
	resp, err := client.Get(url)
	if err != nil {
		fmt.Println("Error making request:", err)
		return
	}
	defer resp.Body.Close()

	redirectedURL := resp.Request.URL.String()
	fmt.Println("Redirected URL:", redirectedURL)
}



How to get the final destination URL after redirection in Golang?

To get the final destination URL after redirection in Golang, you can use the following code snippet using the net/http package:

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package main

import (
	"fmt"
	"net/http"
)

func getFinalRedirectURL(initialURL string) (string, error) {
	resp, err := http.Get(initialURL)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()

	finalURL := resp.Request.URL.String()

	return finalURL, nil
}

func main() {
	initialURL := "https://example.com/redirect"
	finalURL, err := getFinalRedirectURL(initialURL)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}

	fmt.Println("Final URL:", finalURL)
}


Replace the initialURL variable with the URL you want to get the final destination URL for. The getFinalRedirectURL function makes an HTTP request to the initial URL and returns the final URL after following any redirections.


When you run the code, the final URL after the redirection will be printed to the console.


How to decode a URL after redirection in Golang?

In order to decode a URL after redirection in Golang, you can use the url package to parse and decode the URL. Here's an example code snippet to decode a redirected URL:

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package main

import (
    "fmt"
    "net/url"
)

func main() {
    // Original redirected URL string
    redirectedURL := "http://example.com/redirect?url=http%3A%2F%2Fredirectedurl.com%2Fpage"

    // Parse the redirected URL
    parsedURL, err := url.Parse(redirectedURL)
    if err != nil {
        fmt.Println("Error parsing URL:", err)
        return
    }

    // Decode the query parameters in the URL
    queryValues, err := url.ParseQuery(parsedURL.RawQuery)
    if err != nil {
        fmt.Println("Error parsing query parameters:", err)
        return
    }

    // Get the decoded URL from the query parameters
    decodedURL := queryValues.Get("url")

    fmt.Println("Decoded URL:", decodedURL)
}


This code snippet parses the redirected URL, decodes the query parameters, and retrieves the decoded URL from the query parameters. It then prints out the decoded URL.


How to extract the target URL from a redirected URL in Golang?

You can extract the target URL from a redirected URL in Golang by following these steps:

  1. Use the net/http package to make a request to the redirected URL.
  2. Check the response for any redirect status codes (e.g. 301, 302, 303).
  3. If the response contains a redirect status code, check the Location header to get the target URL.


Here's an example code snippet to illustrate this:

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package main

import (
	"fmt"
	"net/http"
)

func getTargetURL(url string) (string, error) {
	resp, err := http.Get(url)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()

	if resp.StatusCode >= 300 && resp.StatusCode <= 399 {
		targetURL := resp.Header.Get("Location")
		return targetURL, nil
	}

	return "", fmt.Errorf("URL %s did not redirect", url)
}

func main() {
	redirectedURL := "http://example.com" // Enter the redirected URL here
	targetURL, err := getTargetURL(redirectedURL)
	if err != nil {
		fmt.Println("Error getting target URL:", err)
		return
	}

	fmt.Println("Target URL:", targetURL)
}


Replace http://example.com with the redirected URL you want to extract the target URL from. This code snippet will make a request to the redirected URL and extract the target URL if there is any redirection.


How to retrieve the original URL after redirection in Golang?

To retrieve the original URL after redirection in Golang, you can make use of the Request object's Header property. Here is an example code snippet to demonstrate how to achieve this:

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package main

import (
	"fmt"
	"net/http"
)

func main() {
	redirectURL := "http://example.com/redirect"
	
	client := &http.Client{
		CheckRedirect: func(req *http.Request, via []*http.Request) error {
			return http.ErrUseLastResponse
		},
	}
	
	resp, err := client.Get(redirectURL)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	
	originalURL := resp.Request.URL.String()
	fmt.Println("Original URL:", originalURL)
}


In this code snippet, we are making a GET request to a redirect URL using an http.Client with CheckRedirect function that returns http.ErrUseLastResponse to prevent automatic redirection. Then, we retrieve the original URL from the Request object of the response and print it out.


Please note that this code snippet assumes a simple case where there is only one level of redirection. If there are multiple levels of redirection, you may need to modify the code to handle that.


How to extract the redirected URL path in Golang?

You can extract the redirected URL path in Golang by using the net/http package and the Client and Request structs.


Here's an example code snippet to demonstrate how to extract the redirected URL path in Golang:

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package main

import (
	"fmt"
	"net/http"
)

func main() {
	client := &http.Client{}

	req, err := http.NewRequest("GET", "http://example.com/redirect", nil)
	if err != nil {
		fmt.Println("Error creating request:", err)
		return
	}

	resp, err := client.Do(req)
	if err != nil {
		fmt.Println("Error making request:", err)
		return
	}

	defer resp.Body.Close()

	redirectedURLPath := resp.Request.URL.Path
	fmt.Println("Redirected URL path:", redirectedURLPath)
}


In this code snippet, we create a new HTTP client and a new HTTP request to a URL that redirects to another URL. We then make the request using the client and extract the redirected URL path from the resp.Request.URL.Path field. Finally, we print out the redirected URL path.


You can modify the URL in the http.NewRequest function to test with different URLs that may redirect to other URLs.


What is the way to extract the original URL after redirection in Golang?

To extract the original URL after redirection in Golang, you can use the net/http package to make a request to the initial URL and then inspect the Response object to see the final URL after any redirects. Here's an example code snippet:

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package main

import (
	"fmt"
	"net/http"
)

func main() {
	initialURL := "http://example.com/redirect"

	resp, err := http.Get(initialURL)
	if err != nil {
		fmt.Println("Error getting URL:", err)
		return
	}
	defer resp.Body.Close()

	finalURL := resp.Request.URL.String()
	fmt.Println("Original URL:", initialURL)
	fmt.Println("Final URL after redirection:", finalURL)
}


In this code, we make a GET request to the initial URL using http.Get(), and then we access the URL attribute of the Request object in the Response to get the final URL after redirection.

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