libgo: Update to weekly 2011-11-09.

From-SVN: r182073

1 files changed, 0 insertions, 863 deletions

diff --git a/libgo/go/http/request.go b/libgo/go/http/request.go
deleted file mode 100644
index d9a04ef..0000000
--- a/libgo/go/http/request.go
+++ /dev/null
@@ -1,863 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// HTTP Request reading and parsing.
-
-package http
-
-import (
-	"bufio"
-	"bytes"
-	"crypto/tls"
-	"encoding/base64"
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"mime"
-	"mime/multipart"
-	"net/textproto"
-	"strconv"
-	"strings"
-	"url"
-)
-
-const (
-	maxLineLength    = 4096 // assumed <= bufio.defaultBufSize
-	maxValueLength   = 4096
-	maxHeaderLines   = 1024
-	chunkSize        = 4 << 10  // 4 KB chunks
-	defaultMaxMemory = 32 << 20 // 32 MB
-)
-
-// ErrMissingFile is returned by FormFile when the provided file field name
-// is either not present in the request or not a file field.
-var ErrMissingFile = errors.New("http: no such file")
-
-// HTTP request parsing errors.
-type ProtocolError struct {
-	ErrorString string
-}
-
-func (err *ProtocolError) Error() string { return err.ErrorString }
-
-var (
-	ErrLineTooLong          = &ProtocolError{"header line too long"}
-	ErrHeaderTooLong        = &ProtocolError{"header too long"}
-	ErrShortBody            = &ProtocolError{"entity body too short"}
-	ErrNotSupported         = &ProtocolError{"feature not supported"}
-	ErrUnexpectedTrailer    = &ProtocolError{"trailer header without chunked transfer encoding"}
-	ErrMissingContentLength = &ProtocolError{"missing ContentLength in HEAD response"}
-	ErrNotMultipart         = &ProtocolError{"request Content-Type isn't multipart/form-data"}
-	ErrMissingBoundary      = &ProtocolError{"no multipart boundary param Content-Type"}
-)
-
-type badStringError struct {
-	what string
-	str  string
-}
-
-func (e *badStringError) Error() string { return fmt.Sprintf("%s %q", e.what, e.str) }
-
-// Headers that Request.Write handles itself and should be skipped.
-var reqWriteExcludeHeader = map[string]bool{
-	"Host":              true, // not in Header map anyway
-	"User-Agent":        true,
-	"Content-Length":    true,
-	"Transfer-Encoding": true,
-	"Trailer":           true,
-}
-
-var reqWriteExcludeHeaderDump = map[string]bool{
-	"Host":              true, // not in Header map anyway
-	"Content-Length":    true,
-	"Transfer-Encoding": true,
-	"Trailer":           true,
-}
-
-// A Request represents a parsed HTTP request header.
-type Request struct {
-	Method string // GET, POST, PUT, etc.
-	URL    *url.URL
-
-	// The protocol version for incoming requests.
-	// Outgoing requests always use HTTP/1.1.
-	Proto      string // "HTTP/1.0"
-	ProtoMajor int    // 1
-	ProtoMinor int    // 0
-
-	// A header maps request lines to their values.
-	// If the header says
-	//
-	//	accept-encoding: gzip, deflate
-	//	Accept-Language: en-us
-	//	Connection: keep-alive
-	//
-	// then
-	//
-	//	Header = map[string][]string{
-	//		"Accept-Encoding": {"gzip, deflate"},
-	//		"Accept-Language": {"en-us"},
-	//		"Connection": {"keep-alive"},
-	//	}
-	//
-	// HTTP defines that header names are case-insensitive.
-	// The request parser implements this by canonicalizing the
-	// name, making the first character and any characters
-	// following a hyphen uppercase and the rest lowercase.
-	Header Header
-
-	// The message body.
-	Body io.ReadCloser
-
-	// ContentLength records the length of the associated content.
-	// The value -1 indicates that the length is unknown.
-	// Values >= 0 indicate that the given number of bytes may be read from Body.
-	ContentLength int64
-
-	// TransferEncoding lists the transfer encodings from outermost to innermost.
-	// An empty list denotes the "identity" encoding.
-	TransferEncoding []string
-
-	// Whether to close the connection after replying to this request.
-	Close bool
-
-	// The host on which the URL is sought.
-	// Per RFC 2616, this is either the value of the Host: header
-	// or the host name given in the URL itself.
-	Host string
-
-	// The parsed form. Only available after ParseForm is called.
-	Form url.Values
-
-	// The parsed multipart form, including file uploads.
-	// Only available after ParseMultipartForm is called.
-	MultipartForm *multipart.Form
-
-	// Trailer maps trailer keys to values.  Like for Header, if the
-	// response has multiple trailer lines with the same key, they will be
-	// concatenated, delimited by commas.
-	Trailer Header
-
-	// RemoteAddr allows HTTP servers and other software to record
-	// the network address that sent the request, usually for
-	// logging. This field is not filled in by ReadRequest and
-	// has no defined format. The HTTP server in this package
-	// sets RemoteAddr to an "IP:port" address before invoking a
-	// handler.
-	RemoteAddr string
-
-	// TLS allows HTTP servers and other software to record
-	// information about the TLS connection on which the request
-	// was received. This field is not filled in by ReadRequest.
-	// The HTTP server in this package sets the field for
-	// TLS-enabled connections before invoking a handler;
-	// otherwise it leaves the field nil.
-	TLS *tls.ConnectionState
-}
-
-// ProtoAtLeast returns whether the HTTP protocol used
-// in the request is at least major.minor.
-func (r *Request) ProtoAtLeast(major, minor int) bool {
-	return r.ProtoMajor > major ||
-		r.ProtoMajor == major && r.ProtoMinor >= minor
-}
-
-// UserAgent returns the client's User-Agent, if sent in the request.
-func (r *Request) UserAgent() string {
-	return r.Header.Get("User-Agent")
-}
-
-// Cookies parses and returns the HTTP cookies sent with the request.
-func (r *Request) Cookies() []*Cookie {
-	return readCookies(r.Header, "")
-}
-
-var ErrNoCookie = errors.New("http: named cookied not present")
-
-// Cookie returns the named cookie provided in the request or
-// ErrNoCookie if not found.
-func (r *Request) Cookie(name string) (*Cookie, error) {
-	for _, c := range readCookies(r.Header, name) {
-		return c, nil
-	}
-	return nil, ErrNoCookie
-}
-
-// AddCookie adds a cookie to the request.  Per RFC 6265 section 5.4,
-// AddCookie does not attach more than one Cookie header field.  That
-// means all cookies, if any, are written into the same line,
-// separated by semicolon.
-func (r *Request) AddCookie(c *Cookie) {
-	s := fmt.Sprintf("%s=%s", sanitizeName(c.Name), sanitizeValue(c.Value))
-	if c := r.Header.Get("Cookie"); c != "" {
-		r.Header.Set("Cookie", c+"; "+s)
-	} else {
-		r.Header.Set("Cookie", s)
-	}
-}
-
-// Referer returns the referring URL, if sent in the request.
-//
-// Referer is misspelled as in the request itself, a mistake from the
-// earliest days of HTTP.  This value can also be fetched from the
-// Header map as Header["Referer"]; the benefit of making it available
-// as a method is that the compiler can diagnose programs that use the
-// alternate (correct English) spelling req.Referrer() but cannot
-// diagnose programs that use Header["Referrer"].
-func (r *Request) Referer() string {
-	return r.Header.Get("Referer")
-}
-
-// multipartByReader is a sentinel value.
-// Its presence in Request.MultipartForm indicates that parsing of the request
-// body has been handed off to a MultipartReader instead of ParseMultipartFrom.
-var multipartByReader = &multipart.Form{
-	Value: make(map[string][]string),
-	File:  make(map[string][]*multipart.FileHeader),
-}
-
-// MultipartReader returns a MIME multipart reader if this is a
-// multipart/form-data POST request, else returns nil and an error.
-// Use this function instead of ParseMultipartForm to
-// process the request body as a stream.
-func (r *Request) MultipartReader() (*multipart.Reader, error) {
-	if r.MultipartForm == multipartByReader {
-		return nil, errors.New("http: MultipartReader called twice")
-	}
-	if r.MultipartForm != nil {
-		return nil, errors.New("http: multipart handled by ParseMultipartForm")
-	}
-	r.MultipartForm = multipartByReader
-	return r.multipartReader()
-}
-
-func (r *Request) multipartReader() (*multipart.Reader, error) {
-	v := r.Header.Get("Content-Type")
-	if v == "" {
-		return nil, ErrNotMultipart
-	}
-	d, params, err := mime.ParseMediaType(v)
-	if err != nil || d != "multipart/form-data" {
-		return nil, ErrNotMultipart
-	}
-	boundary, ok := params["boundary"]
-	if !ok {
-		return nil, ErrMissingBoundary
-	}
-	return multipart.NewReader(r.Body, boundary), nil
-}
-
-// Return value if nonempty, def otherwise.
-func valueOrDefault(value, def string) string {
-	if value != "" {
-		return value
-	}
-	return def
-}
-
-const defaultUserAgent = "Go http package"
-
-// Write writes an HTTP/1.1 request -- header and body -- in wire format.
-// This method consults the following fields of req:
-//	Host
-//	URL
-//	Method (defaults to "GET")
-//	Header
-//	ContentLength
-//	TransferEncoding
-//	Body
-//
-// If Body is present, Content-Length is <= 0 and TransferEncoding
-// hasn't been set to "identity", Write adds "Transfer-Encoding:
-// chunked" to the header. Body is closed after it is sent.
-func (req *Request) Write(w io.Writer) error {
-	return req.write(w, false, nil)
-}
-
-// WriteProxy is like Write but writes the request in the form
-// expected by an HTTP proxy.  In particular, WriteProxy writes the
-// initial Request-URI line of the request with an absolute URI, per
-// section 5.1.2 of RFC 2616, including the scheme and host. In
-// either case, WriteProxy also writes a Host header, using either
-// req.Host or req.URL.Host.
-func (req *Request) WriteProxy(w io.Writer) error {
-	return req.write(w, true, nil)
-}
-
-func (req *Request) dumpWrite(w io.Writer) error {
-	// TODO(bradfitz): RawPath here?
-	urlStr := valueOrDefault(req.URL.EncodedPath(), "/")
-	if req.URL.RawQuery != "" {
-		urlStr += "?" + req.URL.RawQuery
-	}
-
-	bw := bufio.NewWriter(w)
-	fmt.Fprintf(bw, "%s %s HTTP/%d.%d\r\n", valueOrDefault(req.Method, "GET"), urlStr,
-		req.ProtoMajor, req.ProtoMinor)
-
-	host := req.Host
-	if host == "" && req.URL != nil {
-		host = req.URL.Host
-	}
-	if host != "" {
-		fmt.Fprintf(bw, "Host: %s\r\n", host)
-	}
-
-	// Process Body,ContentLength,Close,Trailer
-	tw, err := newTransferWriter(req)
-	if err != nil {
-		return err
-	}
-	err = tw.WriteHeader(bw)
-	if err != nil {
-		return err
-	}
-
-	err = req.Header.WriteSubset(bw, reqWriteExcludeHeaderDump)
-	if err != nil {
-		return err
-	}
-
-	io.WriteString(bw, "\r\n")
-
-	// Write body and trailer
-	err = tw.WriteBody(bw)
-	if err != nil {
-		return err
-	}
-	bw.Flush()
-	return nil
-}
-
-// extraHeaders may be nil
-func (req *Request) write(w io.Writer, usingProxy bool, extraHeaders Header) error {
-	host := req.Host
-	if host == "" {
-		if req.URL == nil {
-			return errors.New("http: Request.Write on Request with no Host or URL set")
-		}
-		host = req.URL.Host
-	}
-
-	urlStr := req.URL.RawPath
-	if strings.HasPrefix(urlStr, "?") {
-		urlStr = "/" + urlStr // Issue 2344
-	}
-	if urlStr == "" {
-		urlStr = valueOrDefault(req.URL.RawPath, valueOrDefault(req.URL.EncodedPath(), "/"))
-		if req.URL.RawQuery != "" {
-			urlStr += "?" + req.URL.RawQuery
-		}
-		if usingProxy {
-			if urlStr == "" || urlStr[0] != '/' {
-				urlStr = "/" + urlStr
-			}
-			urlStr = req.URL.Scheme + "://" + host + urlStr
-		}
-	}
-	// TODO(bradfitz): escape at least newlines in urlStr?
-
-	bw := bufio.NewWriter(w)
-	fmt.Fprintf(bw, "%s %s HTTP/1.1\r\n", valueOrDefault(req.Method, "GET"), urlStr)
-
-	// Header lines
-	fmt.Fprintf(bw, "Host: %s\r\n", host)
-
-	// Use the defaultUserAgent unless the Header contains one, which
-	// may be blank to not send the header.
-	userAgent := defaultUserAgent
-	if req.Header != nil {
-		if ua := req.Header["User-Agent"]; len(ua) > 0 {
-			userAgent = ua[0]
-		}
-	}
-	if userAgent != "" {
-		fmt.Fprintf(bw, "User-Agent: %s\r\n", userAgent)
-	}
-
-	// Process Body,ContentLength,Close,Trailer
-	tw, err := newTransferWriter(req)
-	if err != nil {
-		return err
-	}
-	err = tw.WriteHeader(bw)
-	if err != nil {
-		return err
-	}
-
-	// TODO: split long values?  (If so, should share code with Conn.Write)
-	err = req.Header.WriteSubset(bw, reqWriteExcludeHeader)
-	if err != nil {
-		return err
-	}
-
-	if extraHeaders != nil {
-		err = extraHeaders.Write(bw)
-		if err != nil {
-			return err
-		}
-	}
-
-	io.WriteString(bw, "\r\n")
-
-	// Write body and trailer
-	err = tw.WriteBody(bw)
-	if err != nil {
-		return err
-	}
-	bw.Flush()
-	return nil
-}
-
-// Read a line of bytes (up to \n) from b.
-// Give up if the line exceeds maxLineLength.
-// The returned bytes are a pointer into storage in
-// the bufio, so they are only valid until the next bufio read.
-func readLineBytes(b *bufio.Reader) (p []byte, err error) {
-	if p, err = b.ReadSlice('\n'); err != nil {
-		// We always know when EOF is coming.
-		// If the caller asked for a line, there should be a line.
-		if err == io.EOF {
-			err = io.ErrUnexpectedEOF
-		} else if err == bufio.ErrBufferFull {
-			err = ErrLineTooLong
-		}
-		return nil, err
-	}
-	if len(p) >= maxLineLength {
-		return nil, ErrLineTooLong
-	}
-
-	// Chop off trailing white space.
-	var i int
-	for i = len(p); i > 0; i-- {
-		if c := p[i-1]; c != ' ' && c != '\r' && c != '\t' && c != '\n' {
-			break
-		}
-	}
-	return p[0:i], nil
-}
-
-// readLineBytes, but convert the bytes into a string.
-func readLine(b *bufio.Reader) (s string, err error) {
-	p, e := readLineBytes(b)
-	if e != nil {
-		return "", e
-	}
-	return string(p), nil
-}
-
-// Convert decimal at s[i:len(s)] to integer,
-// returning value, string position where the digits stopped,
-// and whether there was a valid number (digits, not too big).
-func atoi(s string, i int) (n, i1 int, ok bool) {
-	const Big = 1000000
-	if i >= len(s) || s[i] < '0' || s[i] > '9' {
-		return 0, 0, false
-	}
-	n = 0
-	for ; i < len(s) && '0' <= s[i] && s[i] <= '9'; i++ {
-		n = n*10 + int(s[i]-'0')
-		if n > Big {
-			return 0, 0, false
-		}
-	}
-	return n, i, true
-}
-
-// ParseHTTPVersion parses a HTTP version string.
-// "HTTP/1.0" returns (1, 0, true).
-func ParseHTTPVersion(vers string) (major, minor int, ok bool) {
-	if len(vers) < 5 || vers[0:5] != "HTTP/" {
-		return 0, 0, false
-	}
-	major, i, ok := atoi(vers, 5)
-	if !ok || i >= len(vers) || vers[i] != '.' {
-		return 0, 0, false
-	}
-	minor, i, ok = atoi(vers, i+1)
-	if !ok || i != len(vers) {
-		return 0, 0, false
-	}
-	return major, minor, true
-}
-
-type chunkedReader struct {
-	r   *bufio.Reader
-	n   uint64 // unread bytes in chunk
-	err error
-}
-
-func (cr *chunkedReader) beginChunk() {
-	// chunk-size CRLF
-	var line string
-	line, cr.err = readLine(cr.r)
-	if cr.err != nil {
-		return
-	}
-	cr.n, cr.err = strconv.Btoui64(line, 16)
-	if cr.err != nil {
-		return
-	}
-	if cr.n == 0 {
-		// trailer CRLF
-		for {
-			line, cr.err = readLine(cr.r)
-			if cr.err != nil {
-				return
-			}
-			if line == "" {
-				break
-			}
-		}
-		cr.err = io.EOF
-	}
-}
-
-func (cr *chunkedReader) Read(b []uint8) (n int, err error) {
-	if cr.err != nil {
-		return 0, cr.err
-	}
-	if cr.n == 0 {
-		cr.beginChunk()
-		if cr.err != nil {
-			return 0, cr.err
-		}
-	}
-	if uint64(len(b)) > cr.n {
-		b = b[0:cr.n]
-	}
-	n, cr.err = cr.r.Read(b)
-	cr.n -= uint64(n)
-	if cr.n == 0 && cr.err == nil {
-		// end of chunk (CRLF)
-		b := make([]byte, 2)
-		if _, cr.err = io.ReadFull(cr.r, b); cr.err == nil {
-			if b[0] != '\r' || b[1] != '\n' {
-				cr.err = errors.New("malformed chunked encoding")
-			}
-		}
-	}
-	return n, cr.err
-}
-
-// NewRequest returns a new Request given a method, URL, and optional body.
-func NewRequest(method, urlStr string, body io.Reader) (*Request, error) {
-	u, err := url.Parse(urlStr)
-	if err != nil {
-		return nil, err
-	}
-	rc, ok := body.(io.ReadCloser)
-	if !ok && body != nil {
-		rc = ioutil.NopCloser(body)
-	}
-	req := &Request{
-		Method:     method,
-		URL:        u,
-		Proto:      "HTTP/1.1",
-		ProtoMajor: 1,
-		ProtoMinor: 1,
-		Header:     make(Header),
-		Body:       rc,
-		Host:       u.Host,
-	}
-	if body != nil {
-		switch v := body.(type) {
-		case *strings.Reader:
-			req.ContentLength = int64(v.Len())
-		case *bytes.Buffer:
-			req.ContentLength = int64(v.Len())
-		}
-	}
-
-	return req, nil
-}
-
-// SetBasicAuth sets the request's Authorization header to use HTTP
-// Basic Authentication with the provided username and password.
-//
-// With HTTP Basic Authentication the provided username and password
-// are not encrypted.
-func (r *Request) SetBasicAuth(username, password string) {
-	s := username + ":" + password
-	r.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(s)))
-}
-
-// ReadRequest reads and parses a request from b.
-func ReadRequest(b *bufio.Reader) (req *Request, err error) {
-
-	tp := textproto.NewReader(b)
-	req = new(Request)
-
-	// First line: GET /index.html HTTP/1.0
-	var s string
-	if s, err = tp.ReadLine(); err != nil {
-		if err == io.EOF {
-			err = io.ErrUnexpectedEOF
-		}
-		return nil, err
-	}
-
-	var f []string
-	if f = strings.SplitN(s, " ", 3); len(f) < 3 {
-		return nil, &badStringError{"malformed HTTP request", s}
-	}
-	var rawurl string
-	req.Method, rawurl, req.Proto = f[0], f[1], f[2]
-	var ok bool
-	if req.ProtoMajor, req.ProtoMinor, ok = ParseHTTPVersion(req.Proto); !ok {
-		return nil, &badStringError{"malformed HTTP version", req.Proto}
-	}
-
-	if req.URL, err = url.ParseRequest(rawurl); err != nil {
-		return nil, err
-	}
-
-	// Subsequent lines: Key: value.
-	mimeHeader, err := tp.ReadMIMEHeader()
-	if err != nil {
-		return nil, err
-	}
-	req.Header = Header(mimeHeader)
-
-	// RFC2616: Must treat
-	//	GET /index.html HTTP/1.1
-	//	Host: www.google.com
-	// and
-	//	GET http://www.google.com/index.html HTTP/1.1
-	//	Host: doesntmatter
-	// the same.  In the second case, any Host line is ignored.
-	req.Host = req.URL.Host
-	if req.Host == "" {
-		req.Host = req.Header.Get("Host")
-	}
-	req.Header.Del("Host")
-
-	fixPragmaCacheControl(req.Header)
-
-	// TODO: Parse specific header values:
-	//	Accept
-	//	Accept-Encoding
-	//	Accept-Language
-	//	Authorization
-	//	Cache-Control
-	//	Connection
-	//	Date
-	//	Expect
-	//	From
-	//	If-Match
-	//	If-Modified-Since
-	//	If-None-Match
-	//	If-Range
-	//	If-Unmodified-Since
-	//	Max-Forwards
-	//	Proxy-Authorization
-	//	Referer [sic]
-	//	TE (transfer-codings)
-	//	Trailer
-	//	Transfer-Encoding
-	//	Upgrade
-	//	User-Agent
-	//	Via
-	//	Warning
-
-	err = readTransfer(req, b)
-	if err != nil {
-		return nil, err
-	}
-
-	return req, nil
-}
-
-// MaxBytesReader is similar to io.LimitReader but is intended for
-// limiting the size of incoming request bodies. In contrast to
-// io.LimitReader, MaxBytesReader's result is a ReadCloser, returns a
-// non-EOF error for a Read beyond the limit, and Closes the
-// underlying reader when its Close method is called.
-//
-// MaxBytesReader prevents clients from accidentally or maliciously
-// sending a large request and wasting server resources.
-func MaxBytesReader(w ResponseWriter, r io.ReadCloser, n int64) io.ReadCloser {
-	return &maxBytesReader{w: w, r: r, n: n}
-}
-
-type maxBytesReader struct {
-	w       ResponseWriter
-	r       io.ReadCloser // underlying reader
-	n       int64         // max bytes remaining
-	stopped bool
-}
-
-func (l *maxBytesReader) Read(p []byte) (n int, err error) {
-	if l.n <= 0 {
-		if !l.stopped {
-			l.stopped = true
-			if res, ok := l.w.(*response); ok {
-				res.requestTooLarge()
-			}
-		}
-		return 0, errors.New("http: request body too large")
-	}
-	if int64(len(p)) > l.n {
-		p = p[:l.n]
-	}
-	n, err = l.r.Read(p)
-	l.n -= int64(n)
-	return
-}
-
-func (l *maxBytesReader) Close() error {
-	return l.r.Close()
-}
-
-// ParseForm parses the raw query from the URL.
-//
-// For POST or PUT requests, it also parses the request body as a form.
-// If the request Body's size has not already been limited by MaxBytesReader,
-// the size is capped at 10MB.
-//
-// ParseMultipartForm calls ParseForm automatically.
-// It is idempotent.
-func (r *Request) ParseForm() (err error) {
-	if r.Form != nil {
-		return
-	}
-	if r.URL != nil {
-		r.Form, err = url.ParseQuery(r.URL.RawQuery)
-	}
-	if r.Method == "POST" || r.Method == "PUT" {
-		if r.Body == nil {
-			return errors.New("missing form body")
-		}
-		ct := r.Header.Get("Content-Type")
-		ct, _, err := mime.ParseMediaType(ct)
-		switch {
-		case ct == "text/plain" || ct == "application/x-www-form-urlencoded" || ct == "":
-			var reader io.Reader = r.Body
-			maxFormSize := int64(1<<63 - 1)
-			if _, ok := r.Body.(*maxBytesReader); !ok {
-				maxFormSize = int64(10 << 20) // 10 MB is a lot of text.
-				reader = io.LimitReader(r.Body, maxFormSize+1)
-			}
-			b, e := ioutil.ReadAll(reader)
-			if e != nil {
-				if err == nil {
-					err = e
-				}
-				break
-			}
-			if int64(len(b)) > maxFormSize {
-				return errors.New("http: POST too large")
-			}
-			var newValues url.Values
-			newValues, e = url.ParseQuery(string(b))
-			if err == nil {
-				err = e
-			}
-			if r.Form == nil {
-				r.Form = make(url.Values)
-			}
-			// Copy values into r.Form. TODO: make this smoother.
-			for k, vs := range newValues {
-				for _, value := range vs {
-					r.Form.Add(k, value)
-				}
-			}
-		case ct == "multipart/form-data":
-			// handled by ParseMultipartForm (which is calling us, or should be)
-			// TODO(bradfitz): there are too many possible
-			// orders to call too many functions here.
-			// Clean this up and write more tests.
-			// request_test.go contains the start of this,
-			// in TestRequestMultipartCallOrder.
-		default:
-			return &badStringError{"unknown Content-Type", ct}
-		}
-	}
-	return err
-}
-
-// ParseMultipartForm parses a request body as multipart/form-data.
-// The whole request body is parsed and up to a total of maxMemory bytes of
-// its file parts are stored in memory, with the remainder stored on
-// disk in temporary files.
-// ParseMultipartForm calls ParseForm if necessary.
-// After one call to ParseMultipartForm, subsequent calls have no effect.
-func (r *Request) ParseMultipartForm(maxMemory int64) error {
-	if r.MultipartForm == multipartByReader {
-		return errors.New("http: multipart handled by MultipartReader")
-	}
-	if r.Form == nil {
-		err := r.ParseForm()
-		if err != nil {
-			return err
-		}
-	}
-	if r.MultipartForm != nil {
-		return nil
-	}
-
-	mr, err := r.multipartReader()
-	if err == ErrNotMultipart {
-		return nil
-	} else if err != nil {
-		return err
-	}
-
-	f, err := mr.ReadForm(maxMemory)
-	if err != nil {
-		return err
-	}
-	for k, v := range f.Value {
-		r.Form[k] = append(r.Form[k], v...)
-	}
-	r.MultipartForm = f
-
-	return nil
-}
-
-// FormValue returns the first value for the named component of the query.
-// FormValue calls ParseMultipartForm and ParseForm if necessary.
-func (r *Request) FormValue(key string) string {
-	if r.Form == nil {
-		r.ParseMultipartForm(defaultMaxMemory)
-	}
-	if vs := r.Form[key]; len(vs) > 0 {
-		return vs[0]
-	}
-	return ""
-}
-
-// FormFile returns the first file for the provided form key.
-// FormFile calls ParseMultipartForm and ParseForm if necessary.
-func (r *Request) FormFile(key string) (multipart.File, *multipart.FileHeader, error) {
-	if r.MultipartForm == multipartByReader {
-		return nil, nil, errors.New("http: multipart handled by MultipartReader")
-	}
-	if r.MultipartForm == nil {
-		err := r.ParseMultipartForm(defaultMaxMemory)
-		if err != nil {
-			return nil, nil, err
-		}
-	}
-	if r.MultipartForm != nil && r.MultipartForm.File != nil {
-		if fhs := r.MultipartForm.File[key]; len(fhs) > 0 {
-			f, err := fhs[0].Open()
-			return f, fhs[0], err
-		}
-	}
-	return nil, nil, ErrMissingFile
-}
-
-func (r *Request) expectsContinue() bool {
-	return strings.ToLower(r.Header.Get("Expect")) == "100-continue"
-}
-
-func (r *Request) wantsHttp10KeepAlive() bool {
-	if r.ProtoMajor != 1 || r.ProtoMinor != 0 {
-		return false
-	}
-	return strings.Contains(strings.ToLower(r.Header.Get("Connection")), "keep-alive")
-}