Home  >  Article  >  Backend Development  >  How to Limit Bandwidth Usage During an HTTP GET Request in Go?

How to Limit Bandwidth Usage During an HTTP GET Request in Go?

Susan Sarandon
Susan SarandonOriginal
2024-11-01 12:12:30488browse

How to Limit Bandwidth Usage During an HTTP GET Request in Go?

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:

  • __io.CopyN()__: Reads a specified number of bytes (datachunk) from the response body at controlled intervals (timelapse).
  • __os.Stdout__: Represents the standard output, where the chunks are printed.

This code demonstrates how to manually limit bandwidth consumption while maintaining the core functionality of the http.Get() method.

The above is the detailed content of How to Limit Bandwidth Usage During an HTTP GET Request in Go?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn