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Resource.js
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Resource.js
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/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
WI.Resource = class Resource extends WI.SourceCode
{
constructor(url, {mimeType, type, loaderIdentifier, targetId, requestIdentifier, requestMethod, requestHeaders, requestData, requestSentTimestamp, requestSentWalltime, referrerPolicy, integrity, initiatorStackTrace, initiatorSourceCodeLocation, initiatorNode} = {})
{
console.assert(url);
console.assert(!initiatorStackTrace || initiatorStackTrace instanceof WI.StackTrace, initiatorStackTrace);
super(url);
if (type in WI.Resource.Type)
type = WI.Resource.Type[type];
else if (type === "Stylesheet") {
// COMPATIBILITY (iOS 13): Page.ResourceType.Stylesheet was renamed to Page.ResourceType.StyleSheet.
type = WI.Resource.Type.StyleSheet;
}
this._mimeType = mimeType;
this._mimeTypeComponents = null;
this._type = Resource.resolvedType(type, mimeType);
this._loaderIdentifier = loaderIdentifier || null;
this._requestIdentifier = requestIdentifier || null;
this._queryStringParameters = undefined;
this._requestFormParameters = undefined;
this._requestMethod = requestMethod || null;
this._requestData = requestData || null;
this._requestHeaders = requestHeaders || {};
this._responseHeaders = {};
this._requestCookies = null;
this._responseCookies = null;
this._serverTimingEntries = null;
this._parentFrame = null;
this._initiatorStackTrace = initiatorStackTrace || null;
this._initiatorSourceCodeLocation = initiatorSourceCodeLocation || null;
this._initiatorNode = initiatorNode || null;
this._initiatedResources = [];
this._requestSentTimestamp = requestSentTimestamp || NaN;
this._requestSentWalltime = requestSentWalltime || NaN;
this._responseReceivedTimestamp = NaN;
this._lastDataReceivedTimestamp = NaN;
this._finishedOrFailedTimestamp = NaN;
this._finishThenRequestContentPromise = null;
this._statusCode = NaN;
this._statusText = null;
this._cached = false;
this._canceled = false;
this._finished = false;
this._failed = false;
this._failureReasonText = null;
this._receivedNetworkLoadMetrics = false;
this._responseSource = WI.Resource.ResponseSource.Unknown;
this._security = null;
this._timingData = new WI.ResourceTimingData(this);
this._protocol = null;
this._priority = WI.Resource.NetworkPriority.Unknown;
this._remoteAddress = null;
this._connectionIdentifier = null;
this._isProxyConnection = false;
this._target = targetId ? WI.targetManager.targetForIdentifier(targetId) : WI.mainTarget;
this._redirects = [];
this._referrerPolicy = referrerPolicy ?? null;
this._integrity = integrity ?? null;
// Exact sizes if loaded over the network or cache.
this._requestHeadersTransferSize = NaN;
this._requestBodyTransferSize = NaN;
this._responseHeadersTransferSize = NaN;
this._responseBodyTransferSize = NaN;
this._responseBodySize = NaN;
this._cachedResponseBodySize = NaN;
// Estimated sizes (if backend does not provide metrics).
this._estimatedSize = NaN;
this._estimatedTransferSize = NaN;
this._estimatedResponseHeadersSize = NaN;
if (this._initiatorSourceCodeLocation && this._initiatorSourceCodeLocation.sourceCode instanceof WI.Resource)
this._initiatorSourceCodeLocation.sourceCode.addInitiatedResource(this);
}
// Static
static resolvedType(type, mimeType)
{
if (type && type !== WI.Resource.Type.Other)
return type;
return Resource.typeFromMIMEType(mimeType);
}
static typeFromMIMEType(mimeType)
{
if (!mimeType)
return WI.Resource.Type.Other;
mimeType = parseMIMEType(mimeType).type;
if (mimeType in WI.Resource._mimeTypeMap)
return WI.Resource._mimeTypeMap[mimeType];
if (mimeType.startsWith("image/"))
return WI.Resource.Type.Image;
if (mimeType.startsWith("font/"))
return WI.Resource.Type.Font;
return WI.Resource.Type.Other;
}
static displayNameForType(type, plural)
{
switch (type) {
case WI.Resource.Type.Document:
if (plural)
return WI.UIString("Documents");
return WI.UIString("Document");
case WI.Resource.Type.StyleSheet:
if (plural)
return WI.UIString("Style Sheets");
return WI.UIString("Style Sheet");
case WI.Resource.Type.Image:
if (plural)
return WI.UIString("Images");
return WI.UIString("Image");
case WI.Resource.Type.Font:
if (plural)
return WI.UIString("Fonts");
return WI.UIString("Font");
case WI.Resource.Type.Script:
if (plural)
return WI.UIString("Scripts");
return WI.UIString("Script");
case WI.Resource.Type.XHR:
if (plural)
return WI.UIString("XHRs");
return WI.UIString("XHR");
case WI.Resource.Type.Fetch:
if (plural)
return WI.UIString("Fetches", "Resources loaded via 'fetch' method");
return WI.repeatedUIString.fetch();
case WI.Resource.Type.Ping:
if (plural)
return WI.UIString("Pings");
return WI.UIString("Ping");
case WI.Resource.Type.Beacon:
if (plural)
return WI.UIString("Beacons");
return WI.UIString("Beacon");
case WI.Resource.Type.WebSocket:
if (plural)
return WI.UIString("Sockets");
return WI.UIString("Socket");
case WI.Resource.Type.EventSource:
if (plural)
return WI.UIString("EventSources", "Display name for the type of network requests sent via EventSource(s) API (https://developer.mozilla.org/en-US/docs/Web/API/EventSource)");
return WI.UIString("EventSource", "Display name for the type of network requests sent via EventSource API (https://developer.mozilla.org/en-US/docs/Web/API/EventSource)");
case WI.Resource.Type.Other:
return WI.UIString("Other");
default:
console.error("Unknown resource type", type);
return null;
}
}
static classNamesForResource(resource)
{
let classes = [];
let localResourceOverride = resource.localResourceOverride || WI.networkManager.localResourceOverridesForURL(resource.url).filter((localResourceOverride) => !localResourceOverride.disabled)[0];
let isOverride = !!resource.localResourceOverride;
let wasOverridden = resource.responseSource === WI.Resource.ResponseSource.InspectorOverride;
let shouldBeOverridden = resource.isLoading() && localResourceOverride;
let shouldBeBlocked = (resource.failed || isOverride) && localResourceOverride?.type === WI.LocalResourceOverride.InterceptType.Block;
if (isOverride || wasOverridden || shouldBeOverridden || shouldBeBlocked) {
classes.push("override");
if (shouldBeBlocked || localResourceOverride?.type === WI.LocalResourceOverride.InterceptType.ResponseSkippingNetwork)
classes.push("skip-network");
}
if (resource.type === WI.Resource.Type.Other) {
if (resource.requestedByteRange)
classes.push("resource-type-range");
} else
classes.push(resource.type);
return classes;
}
static displayNameForProtocol(protocol)
{
switch (protocol) {
case "h2":
return "HTTP/2";
case "http/1.0":
return "HTTP/1.0";
case "http/1.1":
return "HTTP/1.1";
case "spdy/2":
return "SPDY/2";
case "spdy/3":
return "SPDY/3";
case "spdy/3.1":
return "SPDY/3.1";
default:
return null;
}
}
static comparePriority(a, b)
{
console.assert(typeof a === "symbol");
console.assert(typeof b === "symbol");
const map = {
[WI.Resource.NetworkPriority.Unknown]: 0,
[WI.Resource.NetworkPriority.Low]: 1,
[WI.Resource.NetworkPriority.Medium]: 2,
[WI.Resource.NetworkPriority.High]: 3,
};
let aNum = map[a] || 0;
let bNum = map[b] || 0;
return aNum - bNum;
}
static displayNameForPriority(priority)
{
switch (priority) {
case WI.Resource.NetworkPriority.Low:
return WI.UIString("Low", "Low @ Network Priority", "Low network request priority");
case WI.Resource.NetworkPriority.Medium:
return WI.UIString("Medium", "Medium @ Network Priority", "Medium network request priority");
case WI.Resource.NetworkPriority.High:
return WI.UIString("High", "High @ Network Priority", "High network request priority");
default:
return null;
}
}
static responseSourceFromPayload(source)
{
if (!source)
return WI.Resource.ResponseSource.Unknown;
switch (source) {
case InspectorBackend.Enum.Network.ResponseSource.Unknown:
return WI.Resource.ResponseSource.Unknown;
case InspectorBackend.Enum.Network.ResponseSource.Network:
return WI.Resource.ResponseSource.Network;
case InspectorBackend.Enum.Network.ResponseSource.MemoryCache:
return WI.Resource.ResponseSource.MemoryCache;
case InspectorBackend.Enum.Network.ResponseSource.DiskCache:
return WI.Resource.ResponseSource.DiskCache;
case InspectorBackend.Enum.Network.ResponseSource.ServiceWorker:
return WI.Resource.ResponseSource.ServiceWorker;
case InspectorBackend.Enum.Network.ResponseSource.InspectorOverride:
return WI.Resource.ResponseSource.InspectorOverride;
default:
console.error("Unknown response source type", source);
return WI.Resource.ResponseSource.Unknown;
}
}
static networkPriorityFromPayload(priority)
{
switch (priority) {
case InspectorBackend.Enum.Network.MetricsPriority.Low:
return WI.Resource.NetworkPriority.Low;
case InspectorBackend.Enum.Network.MetricsPriority.Medium:
return WI.Resource.NetworkPriority.Medium;
case InspectorBackend.Enum.Network.MetricsPriority.High:
return WI.Resource.NetworkPriority.High;
default:
console.error("Unknown metrics priority", priority);
return WI.Resource.NetworkPriority.Unknown;
}
}
static connectionIdentifierFromPayload(connectionIdentifier)
{
// Map backend connection identifiers to an easier to read number.
if (!WI.Resource.connectionIdentifierMap) {
WI.Resource.connectionIdentifierMap = new Map;
WI.Resource.nextConnectionIdentifier = 1;
}
let id = WI.Resource.connectionIdentifierMap.get(connectionIdentifier);
if (id)
return id;
id = WI.Resource.nextConnectionIdentifier++;
WI.Resource.connectionIdentifierMap.set(connectionIdentifier, id);
return id;
}
// Public
get mimeType() { return this._mimeType; }
get target() { return this._target; }
get type() { return this._type; }
get loaderIdentifier() { return this._loaderIdentifier; }
get requestIdentifier() { return this._requestIdentifier; }
get requestMethod() { return this._requestMethod; }
get requestData() { return this._requestData; }
get initiatorStackTrace() { return this._initiatorStackTrace; }
get initiatorSourceCodeLocation() { return this._initiatorSourceCodeLocation; }
get initiatorNode() { return this._initiatorNode; }
get initiatedResources() { return this._initiatedResources; }
get statusCode() { return this._statusCode; }
get statusText() { return this._statusText; }
get responseSource() { return this._responseSource; }
get security() { return this._security; }
get timingData() { return this._timingData; }
get protocol() { return this._protocol; }
get priority() { return this._priority; }
get remoteAddress() { return this._remoteAddress; }
get connectionIdentifier() { return this._connectionIdentifier; }
get parentFrame() { return this._parentFrame; }
get finished() { return this._finished; }
get failed() { return this._failed; }
get canceled() { return this._canceled; }
get failureReasonText() { return this._failureReasonText; }
get requestHeaders() { return this._requestHeaders; }
get responseHeaders() { return this._responseHeaders; }
get requestSentTimestamp() { return this._requestSentTimestamp; }
get requestSentWalltime() { return this._requestSentWalltime; }
get responseReceivedTimestamp() { return this._responseReceivedTimestamp; }
get lastDataReceivedTimestamp() { return this._lastDataReceivedTimestamp; }
get finishedOrFailedTimestamp() { return this._finishedOrFailedTimestamp; }
get cached() { return this._cached; }
get requestHeadersTransferSize() { return this._requestHeadersTransferSize; }
get requestBodyTransferSize() { return this._requestBodyTransferSize; }
get responseHeadersTransferSize() { return this._responseHeadersTransferSize; }
get responseBodyTransferSize() { return this._responseBodyTransferSize; }
get cachedResponseBodySize() { return this._cachedResponseBodySize; }
get redirects() { return this._redirects; }
get referrerPolicy() { return this._referrerPolicy; }
get integrity() { return this._integrity; }
get loadedSecurely()
{
if (this.urlComponents.scheme !== "https" && this.urlComponents.scheme !== "wss" && this.urlComponents.scheme !== "sftp")
return false;
if (isNaN(this._timingData.secureConnectionStart) && !isNaN(this._timingData.connectionStart))
return false;
return true;
}
get isScript()
{
return this._type === Resource.Type.Script;
}
get supportsScriptBlackboxing()
{
if (this.localResourceOverride)
return false;
if (!this.finished || this.failed)
return false;
return super.supportsScriptBlackboxing;
}
get displayName()
{
return WI.displayNameForURL(this._url, this.urlComponents);
}
get displayURL()
{
const isMultiLine = true;
const dataURIMaxSize = 64;
return WI.truncateURL(this._url, isMultiLine, dataURIMaxSize);
}
get displayRemoteAddress()
{
if (this._isProxyConnection)
return WI.UIString("%s (Proxy)", "%s (Proxy) @ Resource Remote Address", "Label for the IP address of a proxy server used to retrieve a network resource.").format(this._remoteAddress);
return this._remoteAddress;
}
get mimeTypeComponents()
{
if (!this._mimeTypeComponents)
this._mimeTypeComponents = parseMIMEType(this._mimeType);
return this._mimeTypeComponents;
}
get syntheticMIMEType()
{
// Resources are often transferred with a MIME-type that doesn't match the purpose the
// resource was loaded for, which is what WI.Resource.Type represents.
// This getter generates a MIME-type, if needed, that matches the resource type.
// If the type matches the Resource.Type of the MIME-type, then return the actual MIME-type.
if (this._type === WI.Resource.typeFromMIMEType(this._mimeType))
return this._mimeType;
// Return the default MIME-types for the Resource.Type, since the current MIME-type
// does not match what is expected for the Resource.Type.
switch (this._type) {
case WI.Resource.Type.StyleSheet:
return "text/css";
case WI.Resource.Type.Script:
return "text/javascript";
}
// Return the actual MIME-type since we don't have a better synthesized one to return.
return this._mimeType;
}
get hasMetadata()
{
// Some metadata is only collected when Web Inspector is open (e.g. resource timing data, HTTP method, request headers, etc.).
// Use `_requestIdentifier` as a general signal since it is always included when metadata is collected.
return !!this._requestIdentifier;
}
createObjectURL()
{
let revision = this.currentRevision;
let blobContent = revision.blobContent;
if (blobContent)
return URL.createObjectURL(blobContent)
// If content is not available, fallback to using original URL.
// The client may try to revoke it, but nothing will happen.
return this._url;
}
isMainResource()
{
return this._parentFrame ? this._parentFrame.mainResource === this : false;
}
addInitiatedResource(resource)
{
if (!(resource instanceof WI.Resource))
return;
this._initiatedResources.push(resource);
this.dispatchEventToListeners(WI.Resource.Event.InitiatedResourcesDidChange);
}
get queryStringParameters()
{
if (this._queryStringParameters === undefined)
this._queryStringParameters = parseQueryString(this.urlComponents.queryString, true);
return this._queryStringParameters;
}
get requestFormParameters()
{
if (this._requestFormParameters === undefined)
this._requestFormParameters = this.hasRequestFormParameters() ? parseQueryString(this.requestData, true) : null;
return this._requestFormParameters;
}
get requestDataContentType()
{
return this._requestHeaders.valueForCaseInsensitiveKey("Content-Type") || null;
}
get requestCookies()
{
if (!this._requestCookies)
this._requestCookies = WI.Cookie.parseCookieRequestHeader(this._requestHeaders.valueForCaseInsensitiveKey("Cookie"));
return this._requestCookies;
}
get responseCookies()
{
if (!this._responseCookies) {
// FIXME: The backend sends multiple "Set-Cookie" headers in one "Set-Cookie" with multiple values
// separated by ", ". This doesn't allow us to safely distinguish between a ", " that separates
// multiple headers or one that may be valid part of a Cookie's value or attribute, such as the
// ", " in the the date format "Expires=Tue, 03-Oct-2017 04:39:21 GMT". To improve heuristics
// we do a negative lookahead for numbers, but we can still fail on cookie values containing ", ".
let rawCombinedHeader = this._responseHeaders.valueForCaseInsensitiveKey("Set-Cookie") || "";
let setCookieHeaders = rawCombinedHeader.split(/, (?![0-9])/);
let cookies = [];
for (let header of setCookieHeaders) {
let cookie = WI.Cookie.parseSetCookieResponseHeader(header);
if (cookie)
cookies.push(cookie);
}
this._responseCookies = cookies;
}
return this._responseCookies;
}
get requestSentDate()
{
return isNaN(this._requestSentWalltime) ? null : new Date(this._requestSentWalltime * 1000);
}
get lastRedirectReceivedTimestamp()
{
return this._redirects.length ? this._redirects.lastValue.timestamp : NaN;
}
get firstTimestamp()
{
return this.timingData.startTime || this.lastRedirectReceivedTimestamp || this.responseReceivedTimestamp || this.lastDataReceivedTimestamp || this.finishedOrFailedTimestamp;
}
get lastTimestamp()
{
return this.timingData.responseEnd || this.lastDataReceivedTimestamp || this.responseReceivedTimestamp || this.lastRedirectReceivedTimestamp || this.requestSentTimestamp;
}
get latency()
{
return this.timingData.responseStart - this.timingData.requestStart;
}
get receiveDuration()
{
return this.timingData.responseEnd - this.timingData.responseStart;
}
get totalDuration()
{
return this.timingData.responseEnd - this.timingData.startTime;
}
get size()
{
if (!isNaN(this._cachedResponseBodySize))
return this._cachedResponseBodySize;
if (!isNaN(this._responseBodySize) && this._responseBodySize !== 0)
return this._responseBodySize;
return this._estimatedSize;
}
get networkEncodedSize()
{
return this._responseBodyTransferSize;
}
get networkDecodedSize()
{
return this._responseBodySize;
}
get networkTotalTransferSize()
{
return this._responseHeadersTransferSize + this._responseBodyTransferSize;
}
get estimatedNetworkEncodedSize()
{
let exact = this.networkEncodedSize;
if (!isNaN(exact))
return exact;
if (this._cached)
return 0;
// FIXME: <https://webkit.org/b/158463> Network: Correctly report encoded data length (transfer size) from CFNetwork to NetworkResourceLoader
// macOS provides the decoded transfer size instead of the encoded size
// for estimatedTransferSize. So prefer the "Content-Length" property
// on mac if it is available.
if (WI.Platform.name === "mac") {
let contentLength = Number(this._responseHeaders.valueForCaseInsensitiveKey("Content-Length"));
if (!isNaN(contentLength))
return contentLength;
}
if (!isNaN(this._estimatedTransferSize))
return this._estimatedTransferSize;
// If we did not receive actual transfer size from network
// stack, we prefer using Content-Length over resourceSize as
// resourceSize may differ from actual transfer size if platform's
// network stack performed decoding (e.g. gzip decompression).
// The Content-Length, though, is expected to come from raw
// response headers and will reflect actual transfer length.
// This won't work for chunked content encoding, so fall back to
// resourceSize when we don't have Content-Length. This still won't
// work for chunks with non-trivial encodings. We need a way to
// get actual transfer size from the network stack.
return Number(this._responseHeaders.valueForCaseInsensitiveKey("Content-Length") || this._estimatedSize);
}
get estimatedTotalTransferSize()
{
let exact = this.networkTotalTransferSize;
if (!isNaN(exact))
return exact;
if (this.statusCode === 304) // Not modified
return this._estimatedResponseHeadersSize;
if (this._cached)
return 0;
return this._estimatedResponseHeadersSize + this.estimatedNetworkEncodedSize;
}
get compressed()
{
let contentEncoding = this._responseHeaders.valueForCaseInsensitiveKey("Content-Encoding");
return !!(contentEncoding && /\b(?:gzip|deflate|br)\b/.test(contentEncoding));
}
get requestedByteRange()
{
let range = this._requestHeaders.valueForCaseInsensitiveKey("Range");
if (!range)
return null;
let rangeValues = range.match(/bytes=(\d+)-(\d+)/);
if (!rangeValues)
return null;
let start = parseInt(rangeValues[1]);
if (isNaN(start))
return null;
let end = parseInt(rangeValues[2]);
if (isNaN(end))
return null;
return {start, end};
}
get scripts()
{
return this._scripts || [];
}
get serverTiming()
{
if (!this._serverTimingEntries)
this._serverTimingEntries = WI.ServerTimingEntry.parseHeaders(this._responseHeaders.valueForCaseInsensitiveKey("Server-Timing"));
return this._serverTimingEntries;
}
scriptForLocation(sourceCodeLocation)
{
console.assert(!(this instanceof WI.SourceMapResource));
console.assert(sourceCodeLocation.sourceCode === this, "SourceCodeLocation must be in this Resource");
if (sourceCodeLocation.sourceCode !== this)
return null;
var lineNumber = sourceCodeLocation.lineNumber;
var columnNumber = sourceCodeLocation.columnNumber;
for (var i = 0; i < this._scripts.length; ++i) {
var script = this._scripts[i];
if (script.range.startLine <= lineNumber && script.range.endLine >= lineNumber) {
if (script.range.startLine === lineNumber && columnNumber < script.range.startColumn)
continue;
if (script.range.endLine === lineNumber && columnNumber > script.range.endColumn)
continue;
return script;
}
}
return null;
}
updateForRedirectResponse(request, response, elapsedTime, walltime)
{
console.assert(!this._finished);
console.assert(!this._failed);
console.assert(!this._canceled);
let oldURL = this._url;
let oldHeaders = this._requestHeaders;
let oldMethod = this._requestMethod;
if (request.url)
this._url = request.url;
this._requestHeaders = request.headers || {};
this._requestCookies = null;
this._requestMethod = request.method || null;
this._redirects.push(new WI.Redirect(oldURL, oldMethod, oldHeaders, response.status, response.statusText, response.headers, elapsedTime));
this._referrerPolicy = request.referrerPolicy ?? null;
this._integrity = request.integrity ?? null;
if (oldURL !== request.url) {
// Delete the URL components so the URL is re-parsed the next time it is requested.
this._urlComponents = null;
this.dispatchEventToListeners(WI.Resource.Event.URLDidChange, {oldURL});
}
this.dispatchEventToListeners(WI.Resource.Event.RequestHeadersDidChange);
this.dispatchEventToListeners(WI.Resource.Event.TimestampsDidChange);
}
hasResponse()
{
return !isNaN(this._statusCode) || this._finished || this._failed;
}
hasRequestFormParameters()
{
let requestDataContentType = this.requestDataContentType;
return requestDataContentType && requestDataContentType.match(/^application\/x-www-form-urlencoded\s*(;.*)?$/i);
}
updateForResponse(url, mimeType, type, responseHeaders, statusCode, statusText, elapsedTime, timingData, source, security)
{
console.assert(!this._finished);
console.assert(!this._failed);
console.assert(!this._canceled);
let oldURL = this._url;
let oldMIMEType = this._mimeType;
let oldType = this._type;
if (type in WI.Resource.Type)
type = WI.Resource.Type[type];
else if (type === "Stylesheet") {
// COMPATIBILITY (iOS 13): Page.ResourceType.Stylesheet was renamed to Page.ResourceType.StyleSheet.
type = WI.Resource.Type.StyleSheet;
}
if (url)
this._url = url;
this._mimeType = mimeType;
this._type = Resource.resolvedType(type, mimeType);
this._statusCode = statusCode;
this._statusText = statusText;
this._responseHeaders = responseHeaders || {};
this._responseCookies = null;
this._serverTimingEntries = null;
this._responseReceivedTimestamp = elapsedTime || NaN;
this._timingData = WI.ResourceTimingData.fromPayload(timingData, this);
if (source)
this._responseSource = WI.Resource.responseSourceFromPayload(source);
this._security = security || {};
const headerBaseSize = 12; // Length of "HTTP/1.1 ", " ", and "\r\n".
const headerPad = 4; // Length of ": " and "\r\n".
this._estimatedResponseHeadersSize = String(this._statusCode).length + this._statusText.length + headerBaseSize;
for (let name in this._responseHeaders)
this._estimatedResponseHeadersSize += name.length + this._responseHeaders[name].length + headerPad;
if (!this._cached) {
if (statusCode === 304 || (this._responseSource === WI.Resource.ResponseSource.MemoryCache || this._responseSource === WI.Resource.ResponseSource.DiskCache))
this.markAsCached();
}
if (oldURL !== url) {
// Delete the URL components so the URL is re-parsed the next time it is requested.
this._urlComponents = null;
this.dispatchEventToListeners(WI.Resource.Event.URLDidChange, {oldURL});
}
if (oldMIMEType !== mimeType) {
// Delete the MIME-type components so the MIME-type is re-parsed the next time it is requested.
this._mimeTypeComponents = null;
this.dispatchEventToListeners(WI.Resource.Event.MIMETypeDidChange, {oldMIMEType});
}
if (oldType !== type)
this.dispatchEventToListeners(WI.Resource.Event.TypeDidChange, {oldType});
console.assert(isNaN(this._estimatedSize));
console.assert(isNaN(this._estimatedTransferSize));
// The transferSize becomes 0 when status is 304 or Content-Length is available, so
// notify listeners of that change.
if (statusCode === 304 || this._responseHeaders.valueForCaseInsensitiveKey("Content-Length"))
this.dispatchEventToListeners(WI.Resource.Event.TransferSizeDidChange);
this.dispatchEventToListeners(WI.Resource.Event.ResponseReceived);
this.dispatchEventToListeners(WI.Resource.Event.TimestampsDidChange);
}
updateWithMetrics(metrics)
{
this._receivedNetworkLoadMetrics = true;
if (metrics.protocol)
this._protocol = metrics.protocol;
if (metrics.priority)
this._priority = WI.Resource.networkPriorityFromPayload(metrics.priority);
if (metrics.remoteAddress)
this._remoteAddress = metrics.remoteAddress;
if (metrics.connectionIdentifier)
this._connectionIdentifier = WI.Resource.connectionIdentifierFromPayload(metrics.connectionIdentifier);
if (metrics.requestHeaders) {
this._requestHeaders = metrics.requestHeaders;
this._requestCookies = null;
this.dispatchEventToListeners(WI.Resource.Event.RequestHeadersDidChange);
}
if ("requestHeaderBytesSent" in metrics) {
this._requestHeadersTransferSize = metrics.requestHeaderBytesSent;
this._requestBodyTransferSize = metrics.requestBodyBytesSent;
this._responseHeadersTransferSize = metrics.responseHeaderBytesReceived;
this._responseBodyTransferSize = metrics.responseBodyBytesReceived;
this._responseBodySize = metrics.responseBodyDecodedSize;
console.assert(this._requestHeadersTransferSize >= 0);
console.assert(this._requestBodyTransferSize >= 0);
console.assert(this._responseHeadersTransferSize >= 0);
console.assert(this._responseBodyTransferSize >= 0);
console.assert(this._responseBodySize >= 0);
// There may have been no size updates received during load if Content-Length was 0.
if (isNaN(this._estimatedSize))
this._estimatedSize = 0;
this.dispatchEventToListeners(WI.Resource.Event.SizeDidChange, {previousSize: this._estimatedSize});
this.dispatchEventToListeners(WI.Resource.Event.TransferSizeDidChange);
}
if (metrics.securityConnection) {
if (!this._security)
this._security = {};
this._security.connection = metrics.securityConnection;
}
this._isProxyConnection = !!metrics.isProxyConnection;
this.dispatchEventToListeners(WI.Resource.Event.MetricsDidChange);
}
setCachedResponseBodySize(size)
{
console.assert(!isNaN(size), "Size should be a valid number.");
console.assert(isNaN(this._cachedResponseBodySize), "This should only be set once.");
console.assert(this._estimatedSize === size, "The legacy path was updated already and matches.");
this._cachedResponseBodySize = size;
}
requestContentFromBackend()
{
let specialContentPromise = WI.SourceCode.generateSpecialContentForURL(this._url);
if (specialContentPromise)
return specialContentPromise;
if (this._target.type === WI.TargetType.Worker) {
console.assert(this.isScript);
let scriptForTarget = this.scripts.find((script) => script.target === this._target);
console.assert(scriptForTarget);
if (scriptForTarget)
return scriptForTarget.requestContentFromBackend();
} else {
// If we have the requestIdentifier we can get the actual response for this specific resource.
// Otherwise the content will be cached resource data, which might not exist anymore.
if (this._requestIdentifier)
return this._target.NetworkAgent.getResponseBody(this._requestIdentifier);
// There is no request identifier or frame to request content from.
if (this._parentFrame)
return this._target.PageAgent.getResourceContent(this._parentFrame.id, this._url);
}
return Promise.reject(new Error("Content request failed."));
}
increaseSize(dataLength, elapsedTime)
{
console.assert(dataLength >= 0);
console.assert(!this._receivedNetworkLoadMetrics, "If we received metrics we don't need to change the estimated size.");
if (isNaN(this._estimatedSize))
this._estimatedSize = 0;
let previousSize = this._estimatedSize;
this._estimatedSize += dataLength;
this._lastDataReceivedTimestamp = elapsedTime || NaN;
this.dispatchEventToListeners(WI.Resource.Event.SizeDidChange, {previousSize});
// The estimatedTransferSize is based off of size when status is not 304 or Content-Length is missing.
if (isNaN(this._estimatedTransferSize) && this._statusCode !== 304 && !this._responseHeaders.valueForCaseInsensitiveKey("Content-Length"))
this.dispatchEventToListeners(WI.Resource.Event.TransferSizeDidChange);
}
increaseTransferSize(encodedDataLength)
{
console.assert(encodedDataLength >= 0);
console.assert(!this._receivedNetworkLoadMetrics, "If we received metrics we don't need to change the estimated transfer size.");
if (isNaN(this._estimatedTransferSize))
this._estimatedTransferSize = 0;
this._estimatedTransferSize += encodedDataLength;
this.dispatchEventToListeners(WI.Resource.Event.TransferSizeDidChange);
}
markAsCached()
{
this._cached = true;
this.dispatchEventToListeners(WI.Resource.Event.CacheStatusDidChange);
// The transferSize starts returning 0 when cached is true, unless status is 304.
if (this._statusCode !== 304)
this.dispatchEventToListeners(WI.Resource.Event.TransferSizeDidChange);
}
markAsFinished(elapsedTime)
{
console.assert(!this._failed);
console.assert(!this._canceled);
this._finished = true;
this._finishedOrFailedTimestamp = elapsedTime || NaN;
this._timingData.markResponseEndTime(elapsedTime || NaN);
if (this._finishThenRequestContentPromise)
this._finishThenRequestContentPromise = null;
this.dispatchEventToListeners(WI.Resource.Event.LoadingDidFinish);
this.dispatchEventToListeners(WI.Resource.Event.TimestampsDidChange);
}
markAsFailed(canceled, elapsedTime, errorText)
{
console.assert(!this._finished);
this._failed = true;
this._canceled = canceled;
this._finishedOrFailedTimestamp = elapsedTime || NaN;
if (!this._failureReasonText)
this._failureReasonText = errorText || null;
this.dispatchEventToListeners(WI.Resource.Event.LoadingDidFail);
this.dispatchEventToListeners(WI.Resource.Event.TimestampsDidChange);
}
revertMarkAsFinished()
{
console.assert(!this._failed);
console.assert(!this._canceled);
console.assert(this._finished);
this._finished = false;
this._finishedOrFailedTimestamp = NaN;
}
legacyMarkServedFromMemoryCache()
{
// COMPATIBILITY (iOS 10.3): This is a legacy code path where we know the resource came from the MemoryCache.
console.assert(this._responseSource === WI.Resource.ResponseSource.Unknown);
this._responseSource = WI.Resource.ResponseSource.MemoryCache;
this.markAsCached();
}
legacyMarkServedFromDiskCache()
{
// COMPATIBILITY (iOS 10.3): This is a legacy code path where we know the resource came from the DiskCache.
console.assert(this._responseSource === WI.Resource.ResponseSource.Unknown);
this._responseSource = WI.Resource.ResponseSource.DiskCache;
this.markAsCached();