How to Set Headers for HTTP Requests Using `http.Client` and `http.Transport` in Go?

Setting Headers for Requests Using http.Client and http.Transport

To set headers for HTTP requests, one can use http.Client's Do method, which sends an HTTP request and returns an http.Response. Before sending the request, headers can be modified using the Header field of the *http.Request object.

In your case, with a custom setup of http.Transport and http.Dialer to specify the IP address, headers can be set as follows:

<code class="go">// Create a new HTTP client with the custom transport
client := &http.Client{
    Transport: &http.Transport{
        // ...
    },
}

// Create a new HTTP request
req, err := http.NewRequest("GET", "https://www.whatismyip.com/", nil)
if err != nil {
    // handle error
}

// Set the headers
req.Header.Set("name", "value")

// Send the request and handle the response
resp, err := client.Do(req)
if err != nil {
    // handle error
}

// Read and print the response body
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
    // handle error
}
fmt.Println(string(body))</code>

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