add beehttp module

+package beehttp
+
+import (
+	"net/http"
+)
+
+type Context struct {
+	Input          *BeegoInput
+	Output         *BeegoOutput
+	Request        *http.Request
+	ResponseWriter http.ResponseWriter
+}
+
+func (ctx *Context) Redirect(status int, localurl string) {
+	ctx.Output.Header("Location", localurl)
+	ctx.Output.SetStatus(status)
+}
+
+func (ctx *Context) WriteString(content string) {
+	ctx.Output.Body([]byte(content))
+}
+
+func (ctx *Context) GetCookie(key string) string {
+	return ctx.Input.Cookie(key)
+}
+
+func (ctx *Context) SetCookie(name string, value string, others ...interface{}) {
+	ctx.Output.Cookie(name, value, others...)
+}

+package beehttp
+
+import (
+	"bytes"
+	"github.com/astaxie/beego/session"
+	"io/ioutil"
+	"net/http"
+	"strconv"
+	"strings"
+)
+
+type BeegoInput struct {
+	CruSession  session.SessionStore
+	Param       map[string]string
+	req         *http.Request
+	RequestBody []byte
+}
+
+func NewInput(req *http.Request) *BeegoInput {
+	return &BeegoInput{
+		Param: make(map[string]string),
+		req:   req,
+	}
+}
+
+func (input *BeegoInput) Protocol() string {
+	return input.req.Proto
+}
+
+func (input *BeegoInput) Uri() string {
+	return input.req.RequestURI
+}
+
+func (input *BeegoInput) Url() string {
+	return input.req.URL.String()
+}
+
+func (input *BeegoInput) Site() string {
+	return input.Scheme() + "://" + input.Domain()
+}
+
+func (input *BeegoInput) Scheme() string {
+	return input.req.URL.Scheme
+}
+
+func (input *BeegoInput) Domain() string {
+	return input.Host()
+}
+
+func (input *BeegoInput) Host() string {
+	if input.req.Host != "" {
+		hostParts := strings.Split(input.req.Host, ":")
+		if len(hostParts) > 0 {
+			return hostParts[0]
+		}
+		return input.req.Host
+	}
+	return "localhost"
+}
+
+func (input *BeegoInput) Method() string {
+	return input.req.Method
+}
+
+func (input *BeegoInput) Is(method string) bool {
+	return input.Method() == method
+}
+
+func (input *BeegoInput) IsAjax() bool {
+	return input.Header("HTTP_X_REQUESTED_WITH") == "XMLHttpRequest"
+}
+
+func (input *BeegoInput) IsSecure() bool {
+	return input.Scheme() == "https"
+}
+
+func (input *BeegoInput) IsUpload() bool {
+	return input.req.MultipartForm != nil
+}
+
+func (input *BeegoInput) IP() string {
+	ips := input.Proxy()
+	if len(ips) > 0 && ips[0] != "" {
+		return ips[0]
+	}
+	ip := strings.Split(input.req.RemoteAddr, ":")
+	if len(ip) > 0 {
+		return ip[0]
+	}
+	return "127.0.0.1"
+}
+
+func (input *BeegoInput) Proxy() []string {
+	if ips := input.Header("HTTP_X_FORWARDED_FOR"); ips != "" {
+		return strings.Split(ips, ",")
+	}
+	return []string{}
+}
+
+func (input *BeegoInput) Refer() string {
+	return input.Header("HTTP_REFERER")
+}
+
+func (input *BeegoInput) SubDomains() string {
+	parts := strings.Split(input.Host(), ".")
+	return strings.Join(parts[len(parts)-2:], ".")
+}
+
+func (input *BeegoInput) Port() int {
+	parts := strings.Split(input.req.Host, ":")
+	if len(parts) == 2 {
+		port, _ := strconv.Atoi(parts[1])
+		return port
+	}
+	return 80
+}
+
+func (input *BeegoInput) UserAgent() string {
+	return input.Header("HTTP_USER_AGENT")
+}
+
+func (input *BeegoInput) Params(key string) string {
+	if v, ok := input.Param[key]; ok {
+		return v
+	}
+	return ""
+}
+
+func (input *BeegoInput) Query(key string) string {
+	return input.req.Form.Get(key)
+}
+
+func (input *BeegoInput) Header(key string) string {
+	return input.req.Header.Get(key)
+}
+
+func (input *BeegoInput) Cookie(key string) string {
+	ck, err := input.req.Cookie(key)
+	if err != nil {
+		return ""
+	}
+	return ck.Value
+}
+
+func (input *BeegoInput) Session(key interface{}) interface{} {
+	return input.CruSession.Get(key)
+}
+
+func (input *BeegoInput) Body() []byte {
+	requestbody, _ := ioutil.ReadAll(input.req.Body)
+	input.req.Body.Close()
+	bf := bytes.NewBuffer(requestbody)
+	input.req.Body = ioutil.NopCloser(bf)
+	return requestbody
+}

+package beehttp
+
+import (
+	"bytes"
+	"compress/flate"
+	"compress/gzip"
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"mime"
+	"net/http"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+type BeegoOutput struct {
+	context    *Context
+	Status     int
+	EnableGzip bool
+	res        http.ResponseWriter
+}
+
+func NewOutput(res http.ResponseWriter) *BeegoOutput {
+	return &BeegoOutput{
+		res: res,
+	}
+}
+
+func (output *BeegoOutput) Header(key, val string) {
+	output.res.Header().Set(key, val)
+}
+
+func (output *BeegoOutput) Body(content []byte) {
+	output_writer := output.res.(io.Writer)
+	if output.EnableGzip == true && output.context.Input.Header("Accept-Encoding") != "" {
+		splitted := strings.SplitN(output.context.Input.Header("Accept-Encoding"), ",", -1)
+		encodings := make([]string, len(splitted))
+
+		for i, val := range splitted {
+			encodings[i] = strings.TrimSpace(val)
+		}
+		for _, val := range encodings {
+			if val == "gzip" {
+				output.Header("Content-Encoding", "gzip")
+				output_writer, _ = gzip.NewWriterLevel(output.res, gzip.BestSpeed)
+
+				break
+			} else if val == "deflate" {
+				output.Header("Content-Encoding", "deflate")
+				output_writer, _ = flate.NewWriter(output.res, flate.BestSpeed)
+				break
+			}
+		}
+	} else {
+		output.Header("Content-Length", strconv.Itoa(len(content)))
+	}
+	output_writer.Write(content)
+	switch output_writer.(type) {
+	case *gzip.Writer:
+		output_writer.(*gzip.Writer).Close()
+	case *flate.Writer:
+		output_writer.(*flate.Writer).Close()
+	case io.WriteCloser:
+		output_writer.(io.WriteCloser).Close()
+	}
+}
+
+func (output *BeegoOutput) Cookie(name string, value string, others ...interface{}) {
+	var b bytes.Buffer
+	fmt.Fprintf(&b, "%s=%s", sanitizeName(name), sanitizeValue(value))
+	if len(others) > 0 {
+		switch others[0].(type) {
+		case int:
+			if others[0].(int) > 0 {
+				fmt.Fprintf(&b, "; Max-Age=%d", others[0].(int))
+			} else if others[0].(int) < 0 {
+				fmt.Fprintf(&b, "; Max-Age=0")
+			}
+		case int64:
+			if others[0].(int64) > 0 {
+				fmt.Fprintf(&b, "; Max-Age=%d", others[0].(int64))
+			} else if others[0].(int64) < 0 {
+				fmt.Fprintf(&b, "; Max-Age=0")
+			}
+		case int32:
+			if others[0].(int32) > 0 {
+				fmt.Fprintf(&b, "; Max-Age=%d", others[0].(int32))
+			} else if others[0].(int32) < 0 {
+				fmt.Fprintf(&b, "; Max-Age=0")
+			}
+		}
+	}
+	if len(others) > 1 {
+		fmt.Fprintf(&b, "; Path=%s", sanitizeValue(others[1].(string)))
+	}
+	if len(others) > 2 {
+		fmt.Fprintf(&b, "; Domain=%s", sanitizeValue(others[2].(string)))
+	}
+	if len(others) > 3 {
+		fmt.Fprintf(&b, "; Secure")
+	}
+	if len(others) > 4 {
+		fmt.Fprintf(&b, "; HttpOnly")
+	}
+	output.res.Header().Add("Set-Cookie", b.String())
+}
+
+var cookieNameSanitizer = strings.NewReplacer("\n", "-", "\r", "-")
+
+func sanitizeName(n string) string {
+	return cookieNameSanitizer.Replace(n)
+}
+
+var cookieValueSanitizer = strings.NewReplacer("\n", " ", "\r", " ", ";", " ")
+
+func sanitizeValue(v string) string {
+	return cookieValueSanitizer.Replace(v)
+}
+
+func (output *BeegoOutput) Json(data string) error {
+	output.Header("Content-Type", "application/json;charset=UTF-8")
+	content, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+	output.Body(content)
+	return nil
+}
+
+func (output *BeegoOutput) Jsonp(data string) error {
+	output.Header("Content-Type", "application/javascript;charset=UTF-8")
+	content, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+	callback := output.context.Input.Query("callback")
+	if callback == "" {
+		return errors.New(`"callback" parameter required`)
+	}
+	callback_content := bytes.NewBufferString(callback)
+	callback_content.WriteString("(")
+	callback_content.Write(content)
+	callback_content.WriteString(");\r\n")
+	output.Body(callback_content.Bytes())
+	return nil
+}
+
+func (output *BeegoOutput) Xml(data string) error {
+	output.Header("Content-Type", "application/xml;charset=UTF-8")
+	content, err := xml.Marshal(data)
+	if err != nil {
+		return err
+	}
+	output.Body(content)
+	return nil
+}
+
+func (output *BeegoOutput) Download(file string) {
+	output.Header("Content-Description", "File Transfer")
+	output.Header("Content-Type", "application/octet-stream")
+	output.Header("Content-Disposition", "attachment; filename="+filepath.Base(file))
+	output.Header("Content-Transfer-Encoding", "binary")
+	output.Header("Expires", "0")
+	output.Header("Cache-Control", "must-revalidate")
+	output.Header("Pragma", "public")
+	http.ServeFile(output.res, output.context.Request, file)
+}
+
+func (output *BeegoOutput) ContentType(ext string) {
+	if !strings.HasPrefix(ext, ".") {
+		ext = "." + ext
+	}
+	ctype := mime.TypeByExtension(ext)
+	if ctype != "" {
+		output.Header("Content-Type", ctype)
+	}
+}
+
+func (output *BeegoOutput) SetStatus(status int) {
+	output.res.WriteHeader(status)
+	output.Status = status
+}
+
+func (output *BeegoOutput) IsCachable(status int) bool {
+	return output.Status >= 200 && output.Status < 300 || output.Status == 304
+}
+
+func (output *BeegoOutput) IsEmpty(status int) bool {
+	return output.Status == 201 || output.Status == 204 || output.Status == 304
+}
+
+func (output *BeegoOutput) IsOk(status int) bool {
+	return output.Status == 200
+}
+
+func (output *BeegoOutput) IsSuccessful(status int) bool {
+	return output.Status >= 200 && output.Status < 300
+}
+
+func (output *BeegoOutput) IsRedirect(status int) bool {
+	return output.Status == 301 || output.Status == 302 || output.Status == 303 || output.Status == 307
+}
+
+func (output *BeegoOutput) IsForbidden(status int) bool {
+	return output.Status == 403
+}
+
+func (output *BeegoOutput) IsNotFound(status int) bool {
+	return output.Status == 404
+}
+
+func (output *BeegoOutput) IsClientError(status int) bool {
+	return output.Status >= 400 && output.Status < 500
+}
+
+func (output *BeegoOutput) IsServerError(status int) bool {
+	return output.Status >= 500 && output.Status < 600
+}