🐛 [Bug]: Memory data disorder

[qiannianshaonian]

Bug Description

my request method is "GET" or "POST",
but when i write route info in my sqlDB,
i found the method is changed "POS"

How to Reproduce

Steps to reproduce the behavior:

1. start httpServer by debug
2. start httpClient
3. you can find this bug

Expected Behavior

Reproduction steps：

1. start httpServer by debug
2. start httpClient
3. you can find this bug

//code in attachs
code.zip

Fiber Version

github.com/gofiber/fiber/v2 v2.49.0

Code Snippet (optional)

package main

import (
	"fmt"
	"log"
	"strings"

	"github.com/gofiber/fiber/v2"
)

func main() {
	app := fiber.New(
		fiber.Config{
			RequestMethods: []string{"POST", "GET", "PUT", "HEAD"},
			// 进行各个参数设置
			ServerHeader: "test",
			// 设置请求body大小限制
			BodyLimit: 10 * 1024 * 1024 * 1024,
			// 设置请求并发限制
			Concurrency:          1024 * 1024 * 1024,
			ReadBufferSize:       128 * 1024,
			WriteBufferSize:      128 * 1024,
			CompressedFileSuffix: ".gz",
			ReduceMemoryUsage:    false,
			DisableKeepalive:     true,
			// 禁用启动时的信息展示
			DisableStartupMessage: true,
		},
	)
	app.All("*", microservice)
	log.Fatal(app.Listen(":8000"))
}

func microservice(c *fiber.Ctx) error {
	method := strings.ToUpper(c.Method())
	path := c.Path()
	doTracing(path, method)
	msg := fmt.Sprintf("1111 %s", c.Params("*"))
	return c.SendString(msg)
}

func doTracing(path, method string) {
	t := GatewayRouterForm{
		Method: method,
		ReqURL: path + method,
	}
	if t.Method == "POS" {
		fmt.Println(".....")
	}
	fmt.Printf("....1111   %p %s %v \n", &t, t.ReqURL, t)
	go next(t)
}
func next(t GatewayRouterForm) {
	fmt.Printf("....222222   %p %s %v \n", &t, t.ReqURL, t)
	if t.Method == "POS" {
		fmt.Printf("....3333   %p %s %v \n", &t, t.ReqURL, t)
	}
}

type GatewayRouterForm struct {
	// 请求Method
	Method string
	// 请求的全url
	ReqURL string
}

Checklist:

• I agree to follow Fiber's Code of Conduct.
• I have checked for existing issues that describe my problem prior to opening this one.
• I understand that improperly formatted bug reports may be closed without explanation.

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[ReneWerner87]

this is why fiber and fasthttp is so fast

we reuse the requests and responses for subsequent requests

read this
https://docs.gofiber.io/#zero-allocation

the solution is to simply make a copy of the data for everything that breaks out of this context, such as a go routine that runs alongside it or other processes that want to get the data afterwards, so that it is not overwritten by the replacement in the next request response process.

[qiannianshaonian]

thank you
This is a great technique, and I will learn to master it