add forward from domain

[ryanbekhen]

Description

Add proxy forward from spesific domain. Hope this helps with the subdomain routing problem and balancer problom in https.

Fixes #2295 #2307

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Checklist:

• For new functionalities I follow the inspiration of the express js framework and built them similar in usage
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation - https:/gofiber/docs for https://docs.gofiber.io/
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• If new dependencies exist, I have checked that they are really necessary and agreed with the maintainers/community (we want to have as few dependencies as possible)
• I tried to make my code as fast as possible with as few allocations as possible
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[ryanbekhen]

I also added a feature for issue #2307. In commit add balancer forward.

[ReneWerner87]

check the comments

[ryanbekhen]

I have added a unit test and completed the readme, please check.

[ReneWerner87]

@ryanbekhen can you check my last comment from the review

[ryanbekhen]

@ReneWerner87 I have added a short description to the signature in the readme in last commit.

[ReneWerner87]

@ryanbekhen can you do this for all the methods listed so you have a good overview and know where they differ

[ryanbekhen]

@ReneWerner87 Is it like this?

// Balancer create a load balancer among multiple upstrem servers.
func Balancer(config Config) fiber.Handler
// Forward performs the given http request and fills the given http response.
func Forward(addr string, clients ...*fasthttp.Client) fiber.Handler
// Do performs the given http request and fills the given http response.
func Do(c *fiber.Ctx, addr string, clients ...*fasthttp.Client) error
// DomainForward the given http request based on the given domain and fills the given http response
func DomainForward(hostname string, addr string, clients ...*fasthttp.Client) fiber.Handler
// BalancerForward performs the given http request based round robin balancer and fills the given http response
func BalancerForward(servers []string, clients ...*fasthttp.Client) fiber.Handler

[ReneWerner87]

yes

[ryanbekhen]

@ReneWerner87 please check again

[ReneWerner87]

@ryanbekhen pls fix the golangci-lint hints

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