httputil.go

     1  // Copyright 2014 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Package httputil provides HTTP utility functions, complementing the
     6  // more common ones in the net/http package.
     7  package httputil
     8  
     9  import (
    10  	"io"
    11  	"net/http/internal"
    12  )
    13  
    14  // NewChunkedReader returns a new chunkedReader that translates the data read from r
    15  // out of HTTP "chunked" format before returning it.
    16  // The chunkedReader returns io.EOF when the final 0-length chunk is read.
    17  //
    18  // NewChunkedReader is not needed by normal applications. The http package
    19  // automatically decodes chunking when reading response bodies.
    20  func NewChunkedReader(r io.Reader) io.Reader {
    21  	return internal.NewChunkedReader(r)
    22  }
    23  
    24  // NewChunkedWriter returns a new chunkedWriter that translates writes into HTTP
    25  // "chunked" format before writing them to w. Closing the returned chunkedWriter
    26  // sends the final 0-length chunk that marks the end of the stream but does
    27  // not send the final CRLF that appears after trailers; trailers and the last
    28  // CRLF must be written separately.
    29  //
    30  // NewChunkedWriter is not needed by normal applications. The http
    31  // package adds chunking automatically if handlers don't set a
    32  // Content-Length header. Using NewChunkedWriter inside a handler
    33  // would result in double chunking or chunking with a Content-Length
    34  // length, both of which are wrong.
    35  func NewChunkedWriter(w io.Writer) io.WriteCloser {
    36  	return internal.NewChunkedWriter(w)
    37  }
    38  
    39  // ErrLineTooLong is returned when reading malformed chunked data
    40  // with lines that are too long.
    41  var ErrLineTooLong = internal.ErrLineTooLong
    42
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