text: package request
  
  import (
  	"github.com/dgrijalva/jwt-go"
  	"net/http"
  )
  
  // Extract and parse a JWT token from an HTTP request.
  // This behaves the same as Parse, but accepts a request and an extractor
  // instead of a token string.  The Extractor interface allows you to define
  // the logic for extracting a token.  Several useful implementations are provided.
  func ParseFromRequest(req *http.Request, extractor Extractor, keyFunc jwt.Keyfunc) (token *jwt.Token, err error) {
  	return ParseFromRequestWithClaims(req, extractor, jwt.MapClaims{}, keyFunc)
  }
  
  // ParseFromRequest but with custom Claims type
  func ParseFromRequestWithClaims(req *http.Request, extractor Extractor, claims jwt.Claims, keyFunc jwt.Keyfunc) (token *jwt.Token, err error) {
  	// Extract token from request
  	if tokStr, err := extractor.ExtractToken(req); err == nil {
  		return jwt.ParseWithClaims(tokStr, claims, keyFunc)
  	} else {
  		return nil, err
  	}
  }
  