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fasthttp.go
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fasthttp.go
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package client
import (
"bufio"
"bytes"
rua "github.com/taoxinyi/rua/framework"
"github.com/valyala/fasthttp"
)
// fastHttpClient uses fasthttp.Client for the requests
type fastHttpClient struct {
client *fasthttp.Client
request *fasthttp.Request
}
// NewFastHttpClient returns a new fastHttpClient
// the actual construction is implemented in Init
func NewFastHttpClient() *fastHttpClient {
return &fastHttpClient{}
}
func (c *fastHttpClient) Name() string {
return "fasthttp"
}
// Init creates a client pool and build the request for reuse
func (c *fastHttpClient) Init(config *rua.LgConfig, request *rua.Request) (err error) {
client := &fasthttp.Client{
NoDefaultUserAgentHeader: true,
MaxConnsPerHost: config.Connections,
ReadBufferSize: config.RecvBufSize,
ReadTimeout: config.Timeout,
DisableHeaderNamesNormalizing: true,
}
fastRequest := fasthttp.Request{}
err = fastRequest.Read(bufio.NewReader(bytes.NewBuffer(request.RawBytes)))
if err != nil {
return err
}
c.client = client
c.request = &fastRequest
return nil
}
func (c *fastHttpClient) CreateUser() (rua.User, error) {
request := &fasthttp.Request{}
c.request.CopyTo(request)
return &fastHttpUser{client: c.client, request: request}, nil
}
// a fastHttpUser just grab a connection from the http.Client and send a requests, and wait for a response
type fastHttpUser struct {
client *fasthttp.Client
request *fasthttp.Request
response fasthttp.Response
}
func (u *fastHttpUser) DoStaticRequest(response *rua.Response) (err error) {
err = u.client.Do(u.request, &u.response)
if err != nil {
return err
}
response.StatusCode = u.response.Header.StatusCode()
// not accurate, only calculated body
response.Size = u.response.Header.ContentLength()
return nil
}