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Controlling Bandwidth of HTTP Requests in Go
Question:
As a novice to Go, how can I restrict bandwidth consumption during an HTTP GET request?
Background:
Analysis:
You have discovered the mxk/go1/flowcontrol library, which provides low-level control over bandwidth usage. However, integrating it with the http.Get() method requires understanding how to access the underlying reader.
Solution:
While convenient wrappers exist in third-party packages, understanding the fundamentals of bandwidth control can be enlightening. Here's a simple implementation that illustrates the approach:
<code class="go">package main import ( "io" "net/http" "os" "time" ) // Set data chunk size (in bytes) and time interval (in seconds) var datachunk int64 = 500 var timelapse time.Duration = 1 func main() { // Initiate HTTP GET request response, _ := http.Get("http://google.com") // Read response in controlled intervals for range time.Tick(timelapse * time.Second) { // Read a chunk of data into stdout _, err := io.CopyN(os.Stdout, response.Body, datachunk) if err != nil { break } } }</code>
Explanation:
This code demonstrates how to manually limit bandwidth consumption while maintaining the core functionality of the http.Get() method.
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