mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
651 lines
19 KiB
C++
651 lines
19 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* vim:set ts=4 sw=4 sts=4 et cin: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include <stdlib.h>
|
|
#include "nsHttpResponseHead.h"
|
|
#include "nsPrintfCString.h"
|
|
#include "prprf.h"
|
|
#include "prtime.h"
|
|
#include "nsCRT.h"
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsHttpResponseHead <public>
|
|
//-----------------------------------------------------------------------------
|
|
|
|
nsresult
|
|
nsHttpResponseHead::SetHeader(nsHttpAtom hdr,
|
|
const nsACString &val,
|
|
bool merge)
|
|
{
|
|
nsresult rv = mHeaders.SetHeader(hdr, val, merge);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
// respond to changes in these headers. we need to reparse the entire
|
|
// header since the change may have merged in additional values.
|
|
if (hdr == nsHttp::Cache_Control)
|
|
ParseCacheControl(mHeaders.PeekHeader(hdr));
|
|
else if (hdr == nsHttp::Pragma)
|
|
ParsePragma(mHeaders.PeekHeader(hdr));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsHttpResponseHead::SetContentLength(PRInt64 len)
|
|
{
|
|
mContentLength = len;
|
|
if (!LL_GE_ZERO(len)) // < 0
|
|
mHeaders.ClearHeader(nsHttp::Content_Length);
|
|
else
|
|
mHeaders.SetHeader(nsHttp::Content_Length, nsPrintfCString("%lld", len));
|
|
}
|
|
|
|
void
|
|
nsHttpResponseHead::Flatten(nsACString &buf, bool pruneTransients)
|
|
{
|
|
if (mVersion == NS_HTTP_VERSION_0_9)
|
|
return;
|
|
|
|
buf.AppendLiteral("HTTP/");
|
|
if (mVersion == NS_HTTP_VERSION_1_1)
|
|
buf.AppendLiteral("1.1 ");
|
|
else
|
|
buf.AppendLiteral("1.0 ");
|
|
|
|
buf.Append(nsPrintfCString("%u", PRUintn(mStatus)) +
|
|
NS_LITERAL_CSTRING(" ") +
|
|
mStatusText +
|
|
NS_LITERAL_CSTRING("\r\n"));
|
|
|
|
if (!pruneTransients) {
|
|
mHeaders.Flatten(buf, false);
|
|
return;
|
|
}
|
|
|
|
// otherwise, we need to iterate over the headers and only flatten
|
|
// those that are appropriate.
|
|
PRUint32 i, count = mHeaders.Count();
|
|
for (i=0; i<count; ++i) {
|
|
nsHttpAtom header;
|
|
const char *value = mHeaders.PeekHeaderAt(i, header);
|
|
|
|
if (!value || header == nsHttp::Connection
|
|
|| header == nsHttp::Proxy_Connection
|
|
|| header == nsHttp::Keep_Alive
|
|
|| header == nsHttp::WWW_Authenticate
|
|
|| header == nsHttp::Proxy_Authenticate
|
|
|| header == nsHttp::Trailer
|
|
|| header == nsHttp::Transfer_Encoding
|
|
|| header == nsHttp::Upgrade
|
|
// XXX this will cause problems when we start honoring
|
|
// Cache-Control: no-cache="set-cookie", what to do?
|
|
|| header == nsHttp::Set_Cookie)
|
|
continue;
|
|
|
|
// otherwise, write out the "header: value\r\n" line
|
|
buf.Append(nsDependentCString(header.get()) +
|
|
NS_LITERAL_CSTRING(": ") +
|
|
nsDependentCString(value) +
|
|
NS_LITERAL_CSTRING("\r\n"));
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsHttpResponseHead::Parse(char *block)
|
|
{
|
|
|
|
LOG(("nsHttpResponseHead::Parse [this=%x]\n", this));
|
|
|
|
// this command works on a buffer as prepared by Flatten, as such it is
|
|
// not very forgiving ;-)
|
|
|
|
char *p = PL_strstr(block, "\r\n");
|
|
if (!p)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
*p = 0;
|
|
ParseStatusLine(block);
|
|
|
|
do {
|
|
block = p + 2;
|
|
|
|
if (*block == 0)
|
|
break;
|
|
|
|
p = PL_strstr(block, "\r\n");
|
|
if (!p)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
*p = 0;
|
|
ParseHeaderLine(block);
|
|
|
|
} while (1);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsHttpResponseHead::ParseStatusLine(const char *line)
|
|
{
|
|
//
|
|
// Parse Status-Line:: HTTP-Version SP Status-Code SP Reason-Phrase CRLF
|
|
//
|
|
|
|
// HTTP-Version
|
|
ParseVersion(line);
|
|
|
|
if ((mVersion == NS_HTTP_VERSION_0_9) || !(line = PL_strchr(line, ' '))) {
|
|
mStatus = 200;
|
|
mStatusText.AssignLiteral("OK");
|
|
}
|
|
else {
|
|
// Status-Code
|
|
mStatus = (PRUint16) atoi(++line);
|
|
if (mStatus == 0) {
|
|
LOG(("mal-formed response status; assuming status = 200\n"));
|
|
mStatus = 200;
|
|
}
|
|
|
|
// Reason-Phrase is whatever is remaining of the line
|
|
if (!(line = PL_strchr(line, ' '))) {
|
|
LOG(("mal-formed response status line; assuming statusText = 'OK'\n"));
|
|
mStatusText.AssignLiteral("OK");
|
|
}
|
|
else
|
|
mStatusText = nsDependentCString(++line);
|
|
}
|
|
|
|
LOG(("Have status line [version=%u status=%u statusText=%s]\n",
|
|
PRUintn(mVersion), PRUintn(mStatus), mStatusText.get()));
|
|
}
|
|
|
|
nsresult
|
|
nsHttpResponseHead::ParseHeaderLine(const char *line)
|
|
{
|
|
nsHttpAtom hdr = {0};
|
|
char *val;
|
|
nsresult rv;
|
|
|
|
rv = mHeaders.ParseHeaderLine(line, &hdr, &val);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// leading and trailing LWS has been removed from |val|
|
|
|
|
// handle some special case headers...
|
|
if (hdr == nsHttp::Content_Length) {
|
|
PRInt64 len;
|
|
const char *ignored;
|
|
// permit only a single value here.
|
|
if (nsHttp::ParseInt64(val, &ignored, &len)) {
|
|
mContentLength = len;
|
|
}
|
|
else {
|
|
// If this is a negative content length then just ignore it
|
|
LOG(("invalid content-length! %s\n", val));
|
|
}
|
|
}
|
|
else if (hdr == nsHttp::Content_Type) {
|
|
LOG(("ParseContentType [type=%s]\n", val));
|
|
bool dummy;
|
|
net_ParseContentType(nsDependentCString(val),
|
|
mContentType, mContentCharset, &dummy);
|
|
}
|
|
else if (hdr == nsHttp::Cache_Control)
|
|
ParseCacheControl(val);
|
|
else if (hdr == nsHttp::Pragma)
|
|
ParsePragma(val);
|
|
return NS_OK;
|
|
}
|
|
|
|
// From section 13.2.3 of RFC2616, we compute the current age of a cached
|
|
// response as follows:
|
|
//
|
|
// currentAge = max(max(0, responseTime - dateValue), ageValue)
|
|
// + now - requestTime
|
|
//
|
|
// where responseTime == now
|
|
//
|
|
// This is typically a very small number.
|
|
//
|
|
nsresult
|
|
nsHttpResponseHead::ComputeCurrentAge(PRUint32 now,
|
|
PRUint32 requestTime,
|
|
PRUint32 *result) const
|
|
{
|
|
PRUint32 dateValue;
|
|
PRUint32 ageValue;
|
|
|
|
*result = 0;
|
|
|
|
if (NS_FAILED(GetDateValue(&dateValue))) {
|
|
LOG(("nsHttpResponseHead::ComputeCurrentAge [this=%x] "
|
|
"Date response header not set!\n", this));
|
|
// Assume we have a fast connection and that our clock
|
|
// is in sync with the server.
|
|
dateValue = now;
|
|
}
|
|
|
|
// Compute apparent age
|
|
if (now > dateValue)
|
|
*result = now - dateValue;
|
|
|
|
// Compute corrected received age
|
|
if (NS_SUCCEEDED(GetAgeValue(&ageValue)))
|
|
*result = NS_MAX(*result, ageValue);
|
|
|
|
NS_ASSERTION(now >= requestTime, "bogus request time");
|
|
|
|
// Compute current age
|
|
*result += (now - requestTime);
|
|
return NS_OK;
|
|
}
|
|
|
|
// From section 13.2.4 of RFC2616, we compute the freshness lifetime of a cached
|
|
// response as follows:
|
|
//
|
|
// freshnessLifetime = max_age_value
|
|
// <or>
|
|
// freshnessLifetime = expires_value - date_value
|
|
// <or>
|
|
// freshnessLifetime = (date_value - last_modified_value) * 0.10
|
|
// <or>
|
|
// freshnessLifetime = 0
|
|
//
|
|
nsresult
|
|
nsHttpResponseHead::ComputeFreshnessLifetime(PRUint32 *result) const
|
|
{
|
|
*result = 0;
|
|
|
|
// Try HTTP/1.1 style max-age directive...
|
|
if (NS_SUCCEEDED(GetMaxAgeValue(result)))
|
|
return NS_OK;
|
|
|
|
*result = 0;
|
|
|
|
PRUint32 date = 0, date2 = 0;
|
|
if (NS_FAILED(GetDateValue(&date)))
|
|
date = NowInSeconds(); // synthesize a date header if none exists
|
|
|
|
// Try HTTP/1.0 style expires header...
|
|
if (NS_SUCCEEDED(GetExpiresValue(&date2))) {
|
|
if (date2 > date)
|
|
*result = date2 - date;
|
|
// the Expires header can specify a date in the past.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Fallback on heuristic using last modified header...
|
|
if (NS_SUCCEEDED(GetLastModifiedValue(&date2))) {
|
|
LOG(("using last-modified to determine freshness-lifetime\n"));
|
|
LOG(("last-modified = %u, date = %u\n", date2, date));
|
|
if (date2 <= date) {
|
|
// this only makes sense if last-modified is actually in the past
|
|
*result = (date - date2) / 10;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// These responses can be cached indefinitely.
|
|
if ((mStatus == 300) || (mStatus == 301)) {
|
|
*result = PRUint32(-1);
|
|
return NS_OK;
|
|
}
|
|
|
|
LOG(("nsHttpResponseHead::ComputeFreshnessLifetime [this = %x] "
|
|
"Insufficient information to compute a non-zero freshness "
|
|
"lifetime!\n", this));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
nsHttpResponseHead::MustValidate() const
|
|
{
|
|
LOG(("nsHttpResponseHead::MustValidate ??\n"));
|
|
|
|
// Some response codes are cacheable, but the rest are not. This switch
|
|
// should stay in sync with the list in nsHttpChannel::ProcessResponse
|
|
switch (mStatus) {
|
|
// Success codes
|
|
case 200:
|
|
case 203:
|
|
case 206:
|
|
// Cacheable redirects
|
|
case 300:
|
|
case 301:
|
|
case 302:
|
|
case 304:
|
|
case 307:
|
|
case 308:
|
|
break;
|
|
// Uncacheable redirects
|
|
case 303:
|
|
case 305:
|
|
// Other known errors
|
|
case 401:
|
|
case 407:
|
|
case 412:
|
|
case 416:
|
|
default: // revalidate unknown error pages
|
|
LOG(("Must validate since response is an uncacheable error page\n"));
|
|
return true;
|
|
}
|
|
|
|
// The no-cache response header indicates that we must validate this
|
|
// cached response before reusing.
|
|
if (NoCache()) {
|
|
LOG(("Must validate since response contains 'no-cache' header\n"));
|
|
return true;
|
|
}
|
|
|
|
// Likewise, if the response is no-store, then we must validate this
|
|
// cached response before reusing. NOTE: it may seem odd that a no-store
|
|
// response may be cached, but indeed all responses are cached in order
|
|
// to support File->SaveAs, View->PageSource, and other browser features.
|
|
if (NoStore()) {
|
|
LOG(("Must validate since response contains 'no-store' header\n"));
|
|
return true;
|
|
}
|
|
|
|
// Compare the Expires header to the Date header. If the server sent an
|
|
// Expires header with a timestamp in the past, then we must validate this
|
|
// cached response before reusing.
|
|
if (ExpiresInPast()) {
|
|
LOG(("Must validate since Expires < Date\n"));
|
|
return true;
|
|
}
|
|
|
|
LOG(("no mandatory validation requirement\n"));
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsHttpResponseHead::MustValidateIfExpired() const
|
|
{
|
|
// according to RFC2616, section 14.9.4:
|
|
//
|
|
// When the must-revalidate directive is present in a response received by a
|
|
// cache, that cache MUST NOT use the entry after it becomes stale to respond to
|
|
// a subsequent request without first revalidating it with the origin server.
|
|
//
|
|
return HasHeaderValue(nsHttp::Cache_Control, "must-revalidate");
|
|
}
|
|
|
|
bool
|
|
nsHttpResponseHead::IsResumable() const
|
|
{
|
|
// even though some HTTP/1.0 servers may support byte range requests, we're not
|
|
// going to bother with them, since those servers wouldn't understand If-Range.
|
|
// Also, while in theory it may be possible to resume when the status code
|
|
// is not 200, it is unlikely to be worth the trouble, especially for
|
|
// non-2xx responses.
|
|
return mStatus == 200 &&
|
|
mVersion >= NS_HTTP_VERSION_1_1 &&
|
|
PeekHeader(nsHttp::Content_Length) &&
|
|
(PeekHeader(nsHttp::ETag) || PeekHeader(nsHttp::Last_Modified)) &&
|
|
HasHeaderValue(nsHttp::Accept_Ranges, "bytes");
|
|
}
|
|
|
|
bool
|
|
nsHttpResponseHead::ExpiresInPast() const
|
|
{
|
|
PRUint32 maxAgeVal, expiresVal, dateVal;
|
|
|
|
// Bug #203271. Ensure max-age directive takes precedence over Expires
|
|
if (NS_SUCCEEDED(GetMaxAgeValue(&maxAgeVal))) {
|
|
return false;
|
|
}
|
|
|
|
return NS_SUCCEEDED(GetExpiresValue(&expiresVal)) &&
|
|
NS_SUCCEEDED(GetDateValue(&dateVal)) &&
|
|
expiresVal < dateVal;
|
|
}
|
|
|
|
nsresult
|
|
nsHttpResponseHead::UpdateHeaders(const nsHttpHeaderArray &headers)
|
|
{
|
|
LOG(("nsHttpResponseHead::UpdateHeaders [this=%x]\n", this));
|
|
|
|
PRUint32 i, count = headers.Count();
|
|
for (i=0; i<count; ++i) {
|
|
nsHttpAtom header;
|
|
const char *val = headers.PeekHeaderAt(i, header);
|
|
|
|
if (!val) {
|
|
continue;
|
|
}
|
|
|
|
// Ignore any hop-by-hop headers...
|
|
if (header == nsHttp::Connection ||
|
|
header == nsHttp::Proxy_Connection ||
|
|
header == nsHttp::Keep_Alive ||
|
|
header == nsHttp::Proxy_Authenticate ||
|
|
header == nsHttp::Proxy_Authorization || // not a response header!
|
|
header == nsHttp::TE ||
|
|
header == nsHttp::Trailer ||
|
|
header == nsHttp::Transfer_Encoding ||
|
|
header == nsHttp::Upgrade ||
|
|
// Ignore any non-modifiable headers...
|
|
header == nsHttp::Content_Location ||
|
|
header == nsHttp::Content_MD5 ||
|
|
header == nsHttp::ETag ||
|
|
// Assume Cache-Control: "no-transform"
|
|
header == nsHttp::Content_Encoding ||
|
|
header == nsHttp::Content_Range ||
|
|
header == nsHttp::Content_Type ||
|
|
// Ignore wacky headers too...
|
|
// this one is for MS servers that send "Content-Length: 0"
|
|
// on 304 responses
|
|
header == nsHttp::Content_Length) {
|
|
LOG(("ignoring response header [%s: %s]\n", header.get(), val));
|
|
}
|
|
else {
|
|
LOG(("new response header [%s: %s]\n", header.get(), val));
|
|
|
|
// overwrite the current header value with the new value...
|
|
SetHeader(header, nsDependentCString(val));
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsHttpResponseHead::Reset()
|
|
{
|
|
LOG(("nsHttpResponseHead::Reset\n"));
|
|
|
|
ClearHeaders();
|
|
|
|
mVersion = NS_HTTP_VERSION_1_1;
|
|
mStatus = 200;
|
|
mContentLength = LL_MAXUINT;
|
|
mCacheControlNoStore = false;
|
|
mCacheControlNoCache = false;
|
|
mPragmaNoCache = false;
|
|
mStatusText.Truncate();
|
|
mContentType.Truncate();
|
|
mContentCharset.Truncate();
|
|
}
|
|
|
|
nsresult
|
|
nsHttpResponseHead::ParseDateHeader(nsHttpAtom header, PRUint32 *result) const
|
|
{
|
|
const char *val = PeekHeader(header);
|
|
if (!val)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
PRTime time;
|
|
PRStatus st = PR_ParseTimeString(val, true, &time);
|
|
if (st != PR_SUCCESS)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
*result = PRTimeToSeconds(time);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsHttpResponseHead::GetAgeValue(PRUint32 *result) const
|
|
{
|
|
const char *val = PeekHeader(nsHttp::Age);
|
|
if (!val)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
*result = (PRUint32) atoi(val);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Return the value of the (HTTP 1.1) max-age directive, which itself is a
|
|
// component of the Cache-Control response header
|
|
nsresult
|
|
nsHttpResponseHead::GetMaxAgeValue(PRUint32 *result) const
|
|
{
|
|
const char *val = PeekHeader(nsHttp::Cache_Control);
|
|
if (!val)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
const char *p = PL_strcasestr(val, "max-age=");
|
|
if (!p)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
int maxAgeValue = atoi(p + 8);
|
|
if (maxAgeValue < 0)
|
|
maxAgeValue = 0;
|
|
*result = PRUint32(maxAgeValue);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsHttpResponseHead::GetExpiresValue(PRUint32 *result) const
|
|
{
|
|
const char *val = PeekHeader(nsHttp::Expires);
|
|
if (!val)
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
PRTime time;
|
|
PRStatus st = PR_ParseTimeString(val, true, &time);
|
|
if (st != PR_SUCCESS) {
|
|
// parsing failed... RFC 2616 section 14.21 says we should treat this
|
|
// as an expiration time in the past.
|
|
*result = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (LL_CMP(time, <, LL_Zero()))
|
|
*result = 0;
|
|
else
|
|
*result = PRTimeToSeconds(time);
|
|
return NS_OK;
|
|
}
|
|
|
|
PRInt64
|
|
nsHttpResponseHead::TotalEntitySize() const
|
|
{
|
|
const char* contentRange = PeekHeader(nsHttp::Content_Range);
|
|
if (!contentRange)
|
|
return ContentLength();
|
|
|
|
// Total length is after a slash
|
|
const char* slash = strrchr(contentRange, '/');
|
|
if (!slash)
|
|
return -1; // No idea what the length is
|
|
|
|
slash++;
|
|
if (*slash == '*') // Server doesn't know the length
|
|
return -1;
|
|
|
|
PRInt64 size;
|
|
if (!nsHttp::ParseInt64(slash, &size))
|
|
size = LL_MAXUINT;
|
|
return size;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsHttpResponseHead <private>
|
|
//-----------------------------------------------------------------------------
|
|
|
|
void
|
|
nsHttpResponseHead::ParseVersion(const char *str)
|
|
{
|
|
// Parse HTTP-Version:: "HTTP" "/" 1*DIGIT "." 1*DIGIT
|
|
|
|
LOG(("nsHttpResponseHead::ParseVersion [version=%s]\n", str));
|
|
|
|
// make sure we have HTTP at the beginning
|
|
if (PL_strncasecmp(str, "HTTP", 4) != 0) {
|
|
LOG(("looks like a HTTP/0.9 response\n"));
|
|
mVersion = NS_HTTP_VERSION_0_9;
|
|
return;
|
|
}
|
|
str += 4;
|
|
|
|
if (*str != '/') {
|
|
LOG(("server did not send a version number; assuming HTTP/1.0\n"));
|
|
// NCSA/1.5.2 has a bug in which it fails to send a version number
|
|
// if the request version is HTTP/1.1, so we fall back on HTTP/1.0
|
|
mVersion = NS_HTTP_VERSION_1_0;
|
|
return;
|
|
}
|
|
|
|
char *p = PL_strchr(str, '.');
|
|
if (p == nsnull) {
|
|
LOG(("mal-formed server version; assuming HTTP/1.0\n"));
|
|
mVersion = NS_HTTP_VERSION_1_0;
|
|
return;
|
|
}
|
|
|
|
++p; // let b point to the minor version
|
|
|
|
int major = atoi(str + 1);
|
|
int minor = atoi(p);
|
|
|
|
if ((major > 1) || ((major == 1) && (minor >= 1)))
|
|
// at least HTTP/1.1
|
|
mVersion = NS_HTTP_VERSION_1_1;
|
|
else
|
|
// treat anything else as version 1.0
|
|
mVersion = NS_HTTP_VERSION_1_0;
|
|
}
|
|
|
|
void
|
|
nsHttpResponseHead::ParseCacheControl(const char *val)
|
|
{
|
|
if (!(val && *val)) {
|
|
// clear flags
|
|
mCacheControlNoCache = false;
|
|
mCacheControlNoStore = false;
|
|
return;
|
|
}
|
|
|
|
// search header value for occurrence(s) of "no-cache" but ignore
|
|
// occurrence(s) of "no-cache=blah"
|
|
if (nsHttp::FindToken(val, "no-cache", HTTP_HEADER_VALUE_SEPS))
|
|
mCacheControlNoCache = true;
|
|
|
|
// search header value for occurrence of "no-store"
|
|
if (nsHttp::FindToken(val, "no-store", HTTP_HEADER_VALUE_SEPS))
|
|
mCacheControlNoStore = true;
|
|
}
|
|
|
|
void
|
|
nsHttpResponseHead::ParsePragma(const char *val)
|
|
{
|
|
LOG(("nsHttpResponseHead::ParsePragma [val=%s]\n", val));
|
|
|
|
if (!(val && *val)) {
|
|
// clear no-cache flag
|
|
mPragmaNoCache = false;
|
|
return;
|
|
}
|
|
|
|
// Although 'Pragma: no-cache' is not a standard HTTP response header (it's
|
|
// a request header), caching is inhibited when this header is present so
|
|
// as to match existing Navigator behavior.
|
|
if (nsHttp::FindToken(val, "no-cache", HTTP_HEADER_VALUE_SEPS))
|
|
mPragmaNoCache = true;
|
|
}
|