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httpc.go
134 lines (126 loc) · 2.7 KB
/
httpc.go
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package httpc
import (
"bytes"
"code.google.com/p/go.net/html"
"code.google.com/p/go.net/proxy"
"github.com/reusee/goquery"
"io"
"net"
"net/http"
"net/http/cookiejar"
"time"
)
type Client struct {
Socks5Proxy string
Encoding string
DialTimeout time.Duration
ReadTimeout time.Duration
Retry int
Client *http.Client
}
func NewClient(client *Client) (*Client, error) {
if client == nil {
client = new(Client)
}
if client.DialTimeout == 0 {
client.DialTimeout = time.Second * 10
}
if client.ReadTimeout == 0 {
client.ReadTimeout = time.Second * 10
}
if client.Encoding == "" {
client.Encoding = "utf-8"
}
if client.Retry == 0 {
client.Retry = 3
}
transport := &http.Transport{
Dial: func(network, addr string) (net.Conn, error) {
return net.DialTimeout(network, addr, client.DialTimeout)
},
Proxy: http.ProxyFromEnvironment,
ResponseHeaderTimeout: client.ReadTimeout,
}
if client.Socks5Proxy != "" {
p, err := proxy.SOCKS5("tcp", client.Socks5Proxy, nil, proxy.Direct)
if err != nil {
return nil, err
}
transport.Dial = p.Dial
}
jar, err := cookiejar.New(nil)
if err != nil {
return nil, err
}
client.Client = &http.Client{
Transport: transport,
Jar: jar,
}
return client, nil
}
func (self *Client) Get(url string) (*http.Response, error) {
retry := self.Retry
for {
resp, err := self.Client.Get(url)
if err != nil {
if retry == 0 {
return nil, err
}
retry -= 1
continue
}
return resp, nil
}
}
func (self *Client) GetBytes(url string) ([]byte, error) {
resp, err := self.Get(url)
if err != nil {
return nil, err
}
var reader io.Reader = resp.Body
if self.Encoding != "utf-8" {
buf := new(bytes.Buffer)
io.Copy(buf, resp.Body)
runes, err := From(self.Encoding, buf.Bytes())
if err != nil {
return nil, err
}
reader = bytes.NewReader([]byte(string(runes)))
}
buf := new(bytes.Buffer)
_, err = io.Copy(buf, reader)
if err != nil {
return nil, err
}
resp.Body.Close()
return buf.Bytes(), nil
}
func (self *Client) GetDoc(url string) (*goquery.Document, error) {
resp, err := self.Get(url)
if err != nil {
return nil, err
}
var reader io.Reader = resp.Body
if self.Encoding != "utf-8" {
buf := new(bytes.Buffer)
io.Copy(buf, resp.Body)
runes, err := From(self.Encoding, buf.Bytes())
if err != nil {
return nil, err
}
reader = bytes.NewReader([]byte(string(runes)))
}
node, err := html.Parse(reader)
if err != nil {
return nil, err
}
resp.Body.Close()
return goquery.NewDocumentFromNode(node), nil
}
func (self *Client) GetFind(url string, selector string) (*goquery.Selection, error) {
doc, err := self.GetDoc(url)
if err != nil {
return nil, err
}
return doc.Find(selector), nil
}