1.0: Network

Contents

  1. Commands
    1. canClearBrowserCache
    2. canClearBrowserCookies
    3. clearBrowserCache
    4. clearBrowserCookies
    5. disable
    6. enable
    7. getResponseBody
    8. setCacheDisabled
    9. setExtraHTTPHeaders
    10. setUserAgentOverride
  2. Notifications
    1. dataReceived
    2. loadingFailed
    3. loadingFinished
    4. requestServedFromCache
    5. requestWillBeSent
    6. responseReceived
  3. Types
    1. CachedResource
    2. Headers
    3. Initiator
    4. LoaderId
    5. Request
    6. RequestId
    7. ResourceTiming
    8. Response
    9. Timestamp

Network domain allows tracking network activities of the page. It exposes information about http, file, data and other requests and responses, their headers, bodies, timing, etc.

Commands

Network.canClearBrowserCache

request: {
"id": <number>,
"method": "Network.canClearBrowserCache"
}
response: {
"id": <number>,
"error": <object>,
"result": {
  "result": <boolean>
}
}

Tells whether clearing browser cache is supported.

Returns

result
( boolean )
True if browser cache can be cleared.

Network.canClearBrowserCookies

request: {
"id": <number>,
"method": "Network.canClearBrowserCookies"
}
response: {
"id": <number>,
"error": <object>,
"result": {
  "result": <boolean>
}
}

Tells whether clearing browser cookies is supported.

Returns

result
( boolean )
True if browser cookies can be cleared.

Network.clearBrowserCache

request: {
"id": <number>,
"method": "Network.clearBrowserCache"
}
response: {
"id": <number>,
"error": <object>
}

Clears browser cache.

Network.clearBrowserCookies

request: {
"id": <number>,
"method": "Network.clearBrowserCookies"
}
response: {
"id": <number>,
"error": <object>
}

Clears browser cookies.

Network.disable

request: {
"id": <number>,
"method": "Network.disable"
}
response: {
"id": <number>,
"error": <object>
}

Disables network tracking, prevents network events from being sent to the client.

Network.enable

request: {
"id": <number>,
"method": "Network.enable"
}
response: {
"id": <number>,
"error": <object>
}

Enables network tracking, network events will now be delivered to the client.

Network.getResponseBody

request: {
"id": <number>,
"method": "Network.getResponseBody",
"params": {
  "requestId": <RequestId>
}
}
response: {
"id": <number>,
"error": <object>,
"result": {
  "body": <string>,
  "base64Encoded": <boolean>
}
}

Returns content served for the given request.

Parameters

requestId
( RequestId )
Identifier of the network request to get content for.

Returns

body
( string )
Response body.
base64Encoded
( boolean )
True, if content was sent as base64.

Network.setCacheDisabled

request: {
"id": <number>,
"method": "Network.setCacheDisabled",
"params": {
  "cacheDisabled": <boolean>
}
}
response: {
"id": <number>,
"error": <object>
}

Toggles ignoring cache for each request. If true, cache will not be used.

Parameters

cacheDisabled
( boolean )
Cache disabled state.

Network.setExtraHTTPHeaders

request: {
"id": <number>,
"method": "Network.setExtraHTTPHeaders",
"params": {
  "headers": <Headers>
}
}
response: {
"id": <number>,
"error": <object>
}

Specifies whether to always send extra HTTP headers with the requests from this page.

Parameters

headers
( Headers )
Map with extra HTTP headers.

Network.setUserAgentOverride

request: {
"id": <number>,
"method": "Network.setUserAgentOverride",
"params": {
  "userAgent": <string>
}
}
response: {
"id": <number>,
"error": <object>
}

Allows overriding user agent with the given string.

Parameters

userAgent
( string )
User agent to use.

Notifications

Network.dataReceived

{
"method": "Network.dataReceived",
"params": {
  "requestId": <RequestId>,
  "timestamp": <Timestamp>,
  "dataLength": <integer>,
  "encodedDataLength": <integer>
}
}

Fired when data chunk was received over the network.

Parameters

requestId
( RequestId )
Request identifier.
timestamp
( Timestamp )
Timestamp.
dataLength
( integer )
Data chunk length.
encodedDataLength
( integer )
Actual bytes received (might be less than dataLength for compressed encodings).

Network.loadingFailed

{
"method": "Network.loadingFailed",
"params": {
  "requestId": <RequestId>,
  "timestamp": <Timestamp>,
  "errorText": <string>,
  "canceled": <boolean>
}
}

Fired when HTTP request has failed to load.

Parameters

requestId
( RequestId )
Request identifier.
timestamp
( Timestamp )
Timestamp.
errorText
( string )
User friendly error message.
canceled
( optional boolean )
True if loading was canceled.

Network.loadingFinished

{
"method": "Network.loadingFinished",
"params": {
  "requestId": <RequestId>,
  "timestamp": <Timestamp>
}
}

Fired when HTTP request has finished loading.

Parameters

requestId
( RequestId )
Request identifier.
timestamp
( Timestamp )
Timestamp.

Network.requestServedFromCache

{
"method": "Network.requestServedFromCache",
"params": {
  "requestId": <RequestId>
}
}

Fired if request ended up loading from cache.

Parameters

requestId
( RequestId )
Request identifier.

Network.requestWillBeSent

{
"method": "Network.requestWillBeSent",
"params": {
  "requestId": <RequestId>,
  "loaderId": <LoaderId>,
  "documentURL": <string>,
  "request": <Request>,
  "timestamp": <Timestamp>,
  "initiator": <Initiator>,
  "stackTrace": <Console.StackTrace>,
  "redirectResponse": <Response>
}
}

Fired when page is about to send HTTP request.

Parameters

requestId
( RequestId )
Request identifier.
loaderId
( LoaderId )
Loader identifier.
documentURL
( string )
URL of the document this request is loaded for.
request
( Request )
Request data.
timestamp
( Timestamp )
Timestamp.
initiator
( Initiator )
Request initiator.
stackTrace
( optional Console.StackTrace )
JavaScript stack trace upon issuing this request.
redirectResponse
( optional Response )
Redirect response data.

Network.responseReceived

{
"method": "Network.responseReceived",
"params": {
  "requestId": <RequestId>,
  "loaderId": <LoaderId>,
  "timestamp": <Timestamp>,
  "type": <Page.ResourceType>,
  "response": <Response>
}
}

Fired when HTTP response is available.

Parameters

requestId
( RequestId )
Request identifier.
loaderId
( LoaderId )
Loader identifier.
timestamp
( Timestamp )
Timestamp.
type
Resource type.
response
( Response )
Response data.

Types

CachedResource: object

bodySize
( number )
Cached response body size.
response
( optional Response )
Cached response data.
type
Type of this resource.
url
( string )
Resource URL.

Headers: object

Initiator: object

lineNumber
( optional number )
Initiator line number, set for Parser type only.
stackTrace
( optional Console.StackTrace )
Initiator JavaScript stack trace, set for Script only.
type
( enumerated string [ "other" , "parser" , "script" ] )
Type of this initiator.
url
( optional string )
Initiator URL, set for Parser type only.

LoaderId: string

Request: object

headers
( Headers )
HTTP request headers.
method
( string )
HTTP request method.
postData
( optional string )
HTTP POST request data.
url
( string )
Request URL.

RequestId: string

ResourceTiming: object

connectEnd
( number )
Connected to the remote host.
connectStart
( number )
Started connecting to the remote host.
dnsEnd
( number )
Finished DNS address resolve.
dnsStart
( number )
Started DNS address resolve.
proxyEnd
( number )
Finished resolving proxy.
proxyStart
( number )
Started resolving proxy.
receiveHeadersEnd
( number )
Finished receiving response headers.
requestTime
( number )
Timing's requestTime is a baseline in seconds, while the other numbers are ticks in milliseconds relatively to this requestTime.
sendEnd
( number )
Finished sending request.
sendStart
( number )
Started sending request.
sslEnd
( number )
Finished SSL handshake.
sslStart
( number )
Started SSL handshake.

Response: object

connectionId
( number )
Physical connection id that was actually used for this request.
connectionReused
( boolean )
Specifies whether physical connection was actually reused for this request.
fromDiskCache
( optional boolean )
Specifies that the request was served from the disk cache.
headers
( Headers )
HTTP response headers.
headersText
( optional string )
HTTP response headers text.
mimeType
( string )
Resource mimeType as determined by the browser.
requestHeaders
( optional Headers )
Refined HTTP request headers that were actually transmitted over the network.
requestHeadersText
( optional string )
HTTP request headers text.
status
( number )
HTTP response status code.
statusText
( string )
HTTP response status text.
timing
( optional ResourceTiming )
Timing information for the given request.
url
( string )
Response URL.

Timestamp: number