Golang Request.Trailer方法代码示例

func makeRequest(params map[string]string) (*http.Request, error) {
	r := new(http.Request)
	r.Method = params["METHOD"]
	if r.Method == "" {
		return nil, errors.New("mongrel2: no METHOD")
	}

	r.Proto = params["VERSION"]
	var ok bool
	r.ProtoMajor, r.ProtoMinor, ok = http.ParseHTTPVersion(r.Proto)
	if !ok {
		return nil, errors.New("mongrel2: invalid protocol version")
	}

	r.Trailer = http.Header{}
	r.Header = http.Header{}

	r.Host = params["Host"]
	r.Header.Set("Referer", params["Referer"])
	r.Header.Set("User-Agent", params["User-Agent"])

	if lenstr := params["Content-Length"]; lenstr != "" {
		clen, err := strconv.ParseInt(lenstr, 10, 64)
		if err != nil {
			return nil, errors.New("mongrel2: bad Content-Length")
		}
		r.ContentLength = clen
	}

	for k, v := range params {
		if !skipHeader[k] {
			r.Header.Add(k, v)
		}
	}

	// TODO: cookies

	if r.Host != "" {
		url_, err := url.Parse("http://" + r.Host + params["URI"])
		if err != nil {
			return nil, errors.New("mongrel2: failed to parse host and URI into a URL")
		}
		r.URL = url_
	}
	if r.URL == nil {
		url_, err := url.Parse(params["URI"])
		if err != nil {
			return nil, errors.New("mongrel2: failed to parse URI into a URL")
		}
		r.URL = url_
	}

	// TODO: how do we know if we're using HTTPS?
	// TODO: fill in r.RemoteAddr

	return r, nil
}

func  RequestFromMap(params  map[string]string) (*http.Request, error) {
	
	r:= new (http.Request)
	r.Method =params["REQUEST_METHOD"]
	if r.Method ==""{
		return nil ,errors.New("cgi:no REQUEST_METHOD in enviroment")
	}

	r.Proto = params["SERVER_PROTOCOL"]

	var ok bool
	r.ProtoMajor, r.ProtoMinor ,ok = http.ParseHTTPVersion(r.Proto)

    if  !ok {
    	return nil,errors.New("cgi:invalid SERVER_PROTOCOL version")
    }

    r.Close = true
    r.Trailer = http.Header{}
    r.Header = http.Header{}
    r.Host = params["HTTP_HOST"]

    if lenstr := params["CONTENT_LENGTH"]; lenstr != "" {
    	clen ,err := strconv.ParseInt(lenstr, 10, 64)
    	if  err !=nil {
    		return nil ,errors.New("cgi:bad CONTENT_LENTH in environment :"+ lenstr)
    	}
    	r.ContentLength = clen 
    }
    if ct := params["CONTENT_TYPE"];ct != ""{
    	r.Header.Set("Content-Type", ct)
    }

    for k,v:=range params {
    	if !strings.HasPrefix(k, "HTTP_"|| K == "HTTP_HOST"){
    		continue
    	}
    	r.Header.Add(strings.Replace(k[5:],"_","-", -1), v)
    }
    uriStr = params["SCRIPT_NAME"] +params["PATH_INFO"]
    s:=params["QUERY_STRING"]
    if s!=""{
    	uriStr +="?"+s
    }


}

// RequestFromMap creates an http.Request from CGI variables.
// The returned Request's Body field is not populated.
func RequestFromMap(params map[string]string) (*http.Request, error) {
	r := new(http.Request)
	r.Method = params["REQUEST_METHOD"]
	if r.Method == "" {
		return nil, errors.New("cgi: no REQUEST_METHOD in environment")
	}

	r.Proto = params["SERVER_PROTOCOL"]
	var ok bool
	r.ProtoMajor, r.ProtoMinor, ok = http.ParseHTTPVersion(r.Proto)
	if !ok {
		return nil, errors.New("cgi: invalid SERVER_PROTOCOL version")
	}

	r.Close = true
	r.Trailer = http.Header{}
	r.Header = http.Header{}

	r.Host = params["HTTP_HOST"]

	if lenstr := params["CONTENT_LENGTH"]; lenstr != "" {
		clen, err := strconv.ParseInt(lenstr, 10, 64)
		if err != nil {
			return nil, errors.New("cgi: bad CONTENT_LENGTH in environment: " + lenstr)
		}
		r.ContentLength = clen
	}

	if ct := params["CONTENT_TYPE"]; ct != "" {
		r.Header.Set("Content-Type", ct)
	}

	// Copy "HTTP_FOO_BAR" variables to "Foo-Bar" Headers
	for k, v := range params {
		if !strings.HasPrefix(k, "HTTP_") || k == "HTTP_HOST" {
			continue
		}
		r.Header.Add(strings.Replace(k[5:], "_", "-", -1), v)
	}

	// TODO: cookies.  parsing them isn't exported, though.

	if r.Host != "" {
		// Hostname is provided, so we can reasonably construct a URL,
		// even if we have to assume 'http' for the scheme.
		rawurl := "http://" + r.Host + params["REQUEST_URI"]
		url, err := url.Parse(rawurl)
		if err != nil {
			return nil, errors.New("cgi: failed to parse host and REQUEST_URI into a URL: " + rawurl)
		}
		r.URL = url
	}
	// Fallback logic if we don't have a Host header or the URL
	// failed to parse
	if r.URL == nil {
		uriStr := params["REQUEST_URI"]
		url, err := url.Parse(uriStr)
		if err != nil {
			return nil, errors.New("cgi: failed to parse REQUEST_URI into a URL: " + uriStr)
		}
		r.URL = url
	}

	// There's apparently a de-facto standard for this.
	// http://docstore.mik.ua/orelly/linux/cgi/ch03_02.htm#ch03-35636
	if s := params["HTTPS"]; s == "on" || s == "ON" || s == "1" {
		r.TLS = &tls.ConnectionState{HandshakeComplete: true}
	}

	// Request.RemoteAddr has its port set by Go's standard http
	// server, so we do here too. We don't have one, though, so we
	// use a dummy one.
	r.RemoteAddr = net.JoinHostPort(params["REMOTE_ADDR"], "0")

	return r, nil
}