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53c6040388
With the old process selector service implementation, non-cached loads
would skip the call into the process selector.
This implementation piggybacks atop the existing 'redirectTo' mechanism.
This is unfortunately not the perfect system for catching these loads,
as it doesn't provide an opportunity for performing a final process
switch before redirecting to a non-http channel. In addition, it doesn't
provide indication that a redirect is going to happen, causing
potentially unnecessary process switches.
Not all places where 'redirectTo' is supported use this mechanism. This
process switching mechanism is only checked in situations after
http-on-examine-response.
Potential future changes include:
1. Moving these checks closer to the real 'OnStartRequest' call (e.g.
in ContinueProcessNormal + ContinueOnStartRequest3). This would mean
that loads other than the final load will not cause process swaps.
2. Adding a callback before a redirect is performed, passing in the new
channel, and allowing modifications to be made. This would allow
performing a process swap before redirecting to a non-http(s)
channel.
Depends on D15609
Differential Revision: https://phabricator.services.mozilla.com/D15610
--HG--
extra : moz-landing-system : lando
567 lines
22 KiB
Plaintext
567 lines
22 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIChannel.idl"
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interface nsIHttpHeaderVisitor;
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/**
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* nsIHttpChannel
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*
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* This interface allows for the modification of HTTP request parameters and
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* the inspection of the resulting HTTP response status and headers when they
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* become available.
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*/
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[builtinclass, scriptable, uuid(c5a4a073-4539-49c7-a3f2-cec3f0619c6c)]
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interface nsIHttpChannel : nsIChannel
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{
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/**************************************************************************
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* REQUEST CONFIGURATION
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*
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* Modifying request parameters after asyncOpen has been called is an error.
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*/
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/**
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* Set/get the HTTP request method (default is "GET"). Both setter and
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* getter are case sensitive.
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*
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* This attribute may only be set before the channel is opened.
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*
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* NOTE: The data for a "POST" or "PUT" request can be configured via
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* nsIUploadChannel; however, after setting the upload data, it may be
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* necessary to set the request method explicitly. The documentation
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* for nsIUploadChannel has further details.
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*
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* @throws NS_ERROR_IN_PROGRESS if set after the channel has been opened.
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*/
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[must_use] attribute ACString requestMethod;
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/**
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* Get/set the HTTP referrer URI. This is the address (URI) of the
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* resource from which this channel's URI was obtained (see RFC2616 section
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* 14.36).
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*
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* This attribute may only be set before the channel is opened.
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*
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* NOTE: The channel may silently refuse to set the Referer header if the
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* URI does not pass certain security checks (e.g., a "https://" URL will
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* never be sent as the referrer for a plaintext HTTP request). The
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* implementation is not required to throw an exception when the referrer
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* URI is rejected.
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*
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* @throws NS_ERROR_IN_PROGRESS if set after the channel has been opened.
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* @throws NS_ERROR_FAILURE if used for setting referrer during
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* visitRequestHeaders. Getting the value will not throw.
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*/
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[must_use] attribute nsIURI referrer;
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/**
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* Referrer policies. See ReferrerPolicy.h for more details.
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*/
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/* The undefined state, or no referrer policy, usually causing a fallback
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to a referrer policy definded elsewhere */
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const unsigned long REFERRER_POLICY_UNSET = 0;
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/* default state, doesn't send referrer from https->http */
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const unsigned long REFERRER_POLICY_NO_REFERRER_WHEN_DOWNGRADE = 1;
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/* sends no referrer */
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const unsigned long REFERRER_POLICY_NO_REFERRER = 2;
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/* only sends the origin of the referring URL */
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const unsigned long REFERRER_POLICY_ORIGIN = 3;
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/* same as default, but reduced to ORIGIN when cross-origin. */
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const unsigned long REFERRER_POLICY_ORIGIN_WHEN_XORIGIN = 4;
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/* always sends the referrer, even on downgrade. */
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const unsigned long REFERRER_POLICY_UNSAFE_URL = 5;
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/* send referrer when same-origin, no referrer when cross-origin */
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const unsigned long REFERRER_POLICY_SAME_ORIGIN = 6;
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/* send origin when request from https->https or http->http(s)
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No referrer when request from https->http. */
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const unsigned long REFERRER_POLICY_STRICT_ORIGIN = 7;
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/* send referrer when same-origin,
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Send origin when cross-origin from https->https or http->http(s)
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No referrer when request from https->http. */
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const unsigned long REFERRER_POLICY_STRICT_ORIGIN_WHEN_XORIGIN = 8;
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/**
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* Get the HTTP referrer policy. The policy is retrieved from the meta
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* referrer tag, which can be one of many values (see ReferrerPolicy.h for
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* more details).
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*/
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[must_use] readonly attribute unsigned long referrerPolicy;
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/**
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* Set the HTTP referrer URI with a referrer policy.
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* @throws NS_ERROR_FAILURE if called during visitRequestHeaders.
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*/
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[must_use]
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void setReferrerWithPolicy(in nsIURI referrer, in unsigned long referrerPolicy);
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/**
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* Returns the network protocol used to fetch the resource as identified
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* by the ALPN Protocol ID.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] readonly attribute ACString protocolVersion;
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/**
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* size consumed by the response header fields and the response payload body
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*/
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[must_use] readonly attribute uint64_t transferSize;
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/**
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* The size of the message body received by the client,
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* after removing any applied content-codings
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*/
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[must_use] readonly attribute uint64_t decodedBodySize;
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/**
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* The size in octets of the payload body, prior to removing content-codings
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*/
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[must_use] readonly attribute uint64_t encodedBodySize;
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/**
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* Get the value of a particular request header.
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*
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* @param aHeader
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* The case-insensitive name of the request header to query (e.g.,
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* "Cache-Control").
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*
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* @return the value of the request header.
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* @throws NS_ERROR_NOT_AVAILABLE if the header is not set.
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*/
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[must_use] ACString getRequestHeader(in ACString aHeader);
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/**
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* Set the value of a particular request header.
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*
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* This method allows, for example, the cookies module to add "Cookie"
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* headers to the outgoing HTTP request.
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*
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* This method may only be called before the channel is opened.
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*
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* @param aHeader
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* The case-insensitive name of the request header to set (e.g.,
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* "Cookie").
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* @param aValue
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* The request header value to set (e.g., "X=1").
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* @param aMerge
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* If true, the new header value will be merged with any existing
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* values for the specified header. This flag is ignored if the
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* specified header does not support merging (e.g., the "Content-
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* Type" header can only have one value). The list of headers for
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* which this flag is ignored is an implementation detail. If this
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* flag is false, then the header value will be replaced with the
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* contents of |aValue|.
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*
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* If aValue is empty and aMerge is false, the header will be cleared.
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*
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* @throws NS_ERROR_IN_PROGRESS if called after the channel has been
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* opened.
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* @throws NS_ERROR_FAILURE if called during visitRequestHeaders.
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*/
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[must_use] void setRequestHeader(in ACString aHeader,
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in ACString aValue,
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in boolean aMerge);
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/**
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* Set a request header with empty value.
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*
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* This should be used with caution in the cases where the behavior of
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* setRequestHeader ignoring empty header values is undesirable.
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*
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* This method may only be called before the channel is opened.
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*
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* @param aHeader
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* The case-insensitive name of the request header to set (e.g.,
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* "Cookie").
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*
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* @throws NS_ERROR_IN_PROGRESS if called after the channel has been
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* opened.
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* @throws NS_ERROR_FAILURE if called during visitRequestHeaders.
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*/
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[must_use] void setEmptyRequestHeader(in ACString aHeader);
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/**
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* Call this method to visit all request headers. Calling setRequestHeader
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* while visiting request headers has undefined behavior. Don't do it!
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*
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* @param aVisitor
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* the header visitor instance.
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*/
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[must_use] void visitRequestHeaders(in nsIHttpHeaderVisitor aVisitor);
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/**
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* Call this method to visit all non-default (UA-provided) request headers.
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* Calling setRequestHeader while visiting request headers has undefined
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* behavior. Don't do it!
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*
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* @param aVisitor
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* the header visitor instance.
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*/
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[must_use]
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void visitNonDefaultRequestHeaders(in nsIHttpHeaderVisitor aVisitor);
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/**
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* This attribute no longer has any effect, it remains for backwards compat
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*
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* @throws NS_ERROR_FAILURE if set after the channel has been opened.
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*/
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[must_use] attribute boolean allowPipelining;
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/**
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* This attribute of the channel indicates whether or not
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* the underlying HTTP transaction should be honor stored Strict Transport
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* Security directives for its principal. It defaults to true. Using
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* OCSP to bootstrap the HTTPs is the likely use case for setting it to
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* false.
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*
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* This attribute may only be set before the channel is opened.
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*
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* @throws NS_ERROR_IN_PROGRESS or NS_ERROR_ALREADY_OPENED
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* if called after the channel has been opened.
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*/
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[must_use] attribute boolean allowSTS;
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/**
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* This attribute specifies the number of redirects this channel is allowed
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* to make. If zero, the channel will fail to redirect and will generate
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* a NS_ERROR_REDIRECT_LOOP failure status.
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*
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* NOTE: An HTTP redirect results in a new channel being created. If the
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* new channel supports nsIHttpChannel, then it will be assigned a value
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* to its |redirectionLimit| attribute one less than the value of the
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* redirected channel's |redirectionLimit| attribute. The initial value
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* for this attribute may be a configurable preference (depending on the
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* implementation).
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*/
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[must_use] attribute unsigned long redirectionLimit;
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/**************************************************************************
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* RESPONSE INFO
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*
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* Accessing response info before the onStartRequest event is an error.
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*/
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/**
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* Get the HTTP response code (e.g., 200).
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] readonly attribute unsigned long responseStatus;
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/**
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* Get the HTTP response status text (e.g., "OK").
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*
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* NOTE: This returns the raw (possibly 8-bit) text from the server. There
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* are no assumptions made about the charset of the returned text. You
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* have been warned!
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] readonly attribute ACString responseStatusText;
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/**
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* Returns true if the HTTP response code indicates success. The value of
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* nsIRequest::status will be NS_OK even when processing a 404 response
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* because a 404 response may include a message body that (in some cases)
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* should be shown to the user.
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*
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* Use this attribute to distinguish server error pages from normal pages,
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* instead of comparing the response status manually against the set of
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* valid response codes, if that is required by your application.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] readonly attribute boolean requestSucceeded;
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/** Indicates whether channel should be treated as the main one for the
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* current document. If manually set to true, will always remain true. Otherwise,
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* will be true if LOAD_DOCUMENT_URI is set in the channel's loadflags.
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*/
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[must_use] attribute boolean isMainDocumentChannel;
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/**
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* Get the value of a particular response header.
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*
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* @param aHeader
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* The case-insensitive name of the response header to query (e.g.,
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* "Set-Cookie").
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*
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* @return the value of the response header.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest) or if the header is
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* not set in the response.
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*/
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[must_use] ACString getResponseHeader(in ACString header);
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/**
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* Set the value of a particular response header.
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*
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* This method allows, for example, the HTML content sink to inform the HTTP
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* channel about HTTP-EQUIV headers found in HTML <META> tags.
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*
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* @param aHeader
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* The case-insensitive name of the response header to set (e.g.,
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* "Cache-control").
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* @param aValue
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* The response header value to set (e.g., "no-cache").
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* @param aMerge
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* If true, the new header value will be merged with any existing
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* values for the specified header. This flag is ignored if the
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* specified header does not support merging (e.g., the "Content-
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* Type" header can only have one value). The list of headers for
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* which this flag is ignored is an implementation detail. If this
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* flag is false, then the header value will be replaced with the
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* contents of |aValue|.
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*
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* If aValue is empty and aMerge is false, the header will be cleared.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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* @throws NS_ERROR_ILLEGAL_VALUE if changing the value of this response
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* header is not allowed.
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* @throws NS_ERROR_FAILURE if called during visitResponseHeaders,
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* VisitOriginalResponseHeaders or getOriginalResponseHeader.
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*/
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[must_use] void setResponseHeader(in ACString header,
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in ACString value,
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in boolean merge);
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/**
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* Call this method to visit all response headers. Calling
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* setResponseHeader while visiting response headers has undefined
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* behavior. Don't do it!
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*
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* @param aVisitor
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* the header visitor instance.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] void visitResponseHeaders(in nsIHttpHeaderVisitor aVisitor);
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/**
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* Get the value(s) of a particular response header in the form and order
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* it has been received from the remote peer. There can be multiple headers
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* with the same name.
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*
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* @param aHeader
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* The case-insensitive name of the response header to query (e.g.,
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* "Set-Cookie").
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*
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* @param aVisitor
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* the header visitor instance.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest) or if the header is
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* not set in the response.
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*/
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[must_use] void getOriginalResponseHeader(in ACString aHeader,
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in nsIHttpHeaderVisitor aVisitor);
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/**
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* Call this method to visit all response headers in the form and order as
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* they have been received from the remote peer.
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* Calling setResponseHeader while visiting response headers has undefined
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* behavior. Don't do it!
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*
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* @param aVisitor
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* the header visitor instance.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use]
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void visitOriginalResponseHeaders(in nsIHttpHeaderVisitor aVisitor);
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/**
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* Returns true if the server sent a "Cache-Control: no-store" response
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* header.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] boolean isNoStoreResponse();
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/**
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* Returns true if the server sent the equivalent of a "Cache-control:
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* no-cache" response header. Equivalent response headers include:
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* "Pragma: no-cache", "Expires: 0", and "Expires" with a date value
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* in the past relative to the value of the "Date" header.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] boolean isNoCacheResponse();
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/**
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* Returns true if the server sent a "Cache-Control: private" response
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* header.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called before the response
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* has been received (before onStartRequest).
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*/
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[must_use] boolean isPrivateResponse();
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/**
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* Instructs the channel to immediately redirect to a new destination.
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* Can only be called on channels that have not yet called their
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* listener's OnStartRequest(). Generally that means the latest time
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* this can be used is one of:
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* "http-on-examine-response"
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* "http-on-examine-merged-response"
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* "http-on-examine-cached-response"
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*
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* When non-null URL is set before AsyncOpen:
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* we attempt to redirect to the targetURI before we even start building
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* and sending the request to the cache or the origin server.
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* If the redirect is vetoed, we fail the channel.
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*
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* When set between AsyncOpen and first call to OnStartRequest being called:
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* we attempt to redirect before we start delivery of network or cached
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* response to the listener. If vetoed, we continue with delivery of
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* the original content to the channel listener.
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*
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* When passed aTargetURI is null the channel behaves normally (can be
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* rewritten).
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*
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* This method provides no explicit conflict resolution. The last
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* caller to call it wins.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called after the channel has already
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* started to deliver the content to its listener.
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*/
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[must_use] void redirectTo(in nsIURI aTargetURI);
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/**
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* Instructs the channel to be loaded in a new process. Like 'redirectTo'
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* this can only be used on channels that have not yet called their
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* listener's OnStartRequest().
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*
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* @param aTabPromise a promise which resolves to a nsITabParent object
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* which the load will proceed in.
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* @param aIdentifier a 64-bit ID which will be provided to the
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* ChildProcessChannelListener.
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*/
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[must_use] void switchProcessTo(in Promise aTabPromise,
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in unsigned long long aIdentifier);
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/**
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* Flags a channel to be upgraded to HTTPS.
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*
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* Upgrading to a secure channel must happen before or during
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* "http-on-modify-request". If redirectTo is called early as well, it
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* will win and upgradeToSecure will be a no-op.
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*
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* @throws NS_ERROR_NOT_AVAILABLE if called after the channel has already
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* started to deliver the content to its listener.
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*/
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[must_use] void upgradeToSecure();
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/**
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* Identifies the request context for this load.
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*/
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[noscript, must_use] attribute uint64_t requestContextID;
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/**
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* Unique ID of the channel, shared between parent and child. Needed if
|
|
* the channel activity needs to be monitored across process boundaries,
|
|
* like in devtools net monitor. See bug 1274556.
|
|
*/
|
|
[must_use] attribute uint64_t channelId;
|
|
|
|
/**
|
|
* ID of the top-level document's inner window. Identifies the content
|
|
* this channels is being load in.
|
|
*/
|
|
[must_use] attribute uint64_t topLevelContentWindowId;
|
|
|
|
/**
|
|
* Returns true if the channel has loaded a resource that is on the tracking
|
|
* protection list. This is only available if the
|
|
* privacy.trackingprotection.annotate_channels pref is set and its value
|
|
* should only be relied on after the channel has established a connection.
|
|
*
|
|
* Note that top-level channels could be marked as tracking
|
|
* resource. In order to identify third-party tracking resources
|
|
* specifically, use isThirdPartyTrackingResource.
|
|
*/
|
|
[infallible] readonly attribute boolean isTrackingResource;
|
|
|
|
/**
|
|
* Returns true if the channel has loaded a resource that is on the tracking
|
|
* protection list and is considered third-party with the top window URI.
|
|
* This is only available if the privacy.trackingprotection.annotate_channels
|
|
* pref is set and its value should only be relied on after the channel has
|
|
* established a connection.
|
|
*/
|
|
[infallible] readonly attribute boolean isThirdPartyTrackingResource;
|
|
|
|
/**
|
|
* Returns the allowing status for flash plugin for this channel.
|
|
*/
|
|
cenum FlashPluginState : 8 {
|
|
FlashPluginUnknown = 0,
|
|
FlashPluginAllowed = 1,
|
|
FlashPluginDenied = 2,
|
|
FlashPluginDeniedInSubdocuments = 3,
|
|
|
|
// Keep this equal to the last value.
|
|
FlashPluginLastValue = 3,
|
|
};
|
|
[infallible] readonly attribute nsIHttpChannel_FlashPluginState flashPluginState;
|
|
|
|
/**
|
|
* This method is used by the document.cookie call site in order
|
|
* to override the tracking status of an HTTP channel. This should
|
|
* only be called by Gecko under certain circumstances when Gecko
|
|
* can guarantee that the channel classifier service will not be
|
|
* determining the tracking status of the channel.
|
|
*
|
|
* @param aDocumentChannel
|
|
* The document channel from which to copy the tracking flags
|
|
*
|
|
* Please avoid calling this API if you're unsure whether you
|
|
* should be using it.
|
|
*/
|
|
[noscript] void overrideTrackingFlagsForDocumentCookieAccessor(in nsIHttpChannel aDocumentChannel);
|
|
|
|
/**
|
|
* ID of the top-level outer content window. Identifies this channel's
|
|
* top-level window it comes from.
|
|
*
|
|
* NOTE: The setter of this attribute is currently for xpcshell test only.
|
|
* Don't alter it otherwise.
|
|
*/
|
|
[must_use] attribute uint64_t topLevelOuterContentWindowId;
|
|
|
|
/**
|
|
* In e10s, the information that the CORS response blocks the load is in the
|
|
* parent, which doesn't know the true window id of the request, so we may
|
|
* need to proxy the request to the child.
|
|
*
|
|
* @param aMessage
|
|
* The message to print in the console.
|
|
*
|
|
* @param aCategory
|
|
* The category under which the message should be displayed.
|
|
*/
|
|
void logBlockedCORSRequest(in AString aMessage, in ACString aCategory);
|
|
|
|
void logMimeTypeMismatch(in ACString aMessageName,
|
|
in boolean aWarning,
|
|
in AString aURL,
|
|
in AString aContentType);
|
|
};
|