interface _OnErrorOccurredDetails {
    cookieStoreId?: string;
    documentUrl?: string;
    error: string;
    frameId: number;
    fromCache: boolean;
    incognito?: boolean;
    ip?: string;
    method: string;
    originUrl?: string;
    parentFrameId: number;
    requestId: string;
    tabId: number;
    thirdParty: boolean;
    timeStamp: number;
    type: browser.webRequest.ResourceType;
    url: string;
    urlClassification?: UrlClassification;
}
Index
cookieStoreId? documentUrl? error frameId fromCache incognito? ip? method originUrl? parentFrameId requestId tabId thirdParty timeStamp type url urlClassification?
cookieStoreId?: string

The cookie store ID of the contextual identity.

documentUrl?: string

URL of the page into which the requested resource will be loaded.

error: string

The error description. This string is not guaranteed to remain backwards compatible between releases. You must not parse and act based upon its content.

frameId: number

The value 0 indicates that the request happens in the main frame; a positive value indicates the ID of a subframe in which the request happens. If the document of a (sub-)frame is loaded (type is main_frame or sub_frame), frameId indicates the ID of this frame, not the ID of the outer frame. Frame IDs are unique within a tab.

fromCache: boolean

Indicates if this response was fetched from disk cache.

incognito?: boolean

True for private browsing requests.

ip?: string

The server IP address that the request was actually sent to. Note that it may be a literal IPv6 address.

method: string

Standard HTTP method.

originUrl?: string

URL of the resource that triggered this request.

parentFrameId: number

ID of frame that wraps the frame which sent the request. Set to -1 if no parent frame exists.

requestId: string

The ID of the request. Request IDs are unique within a browser session. As a result, they could be used to relate different events of the same request.

tabId: number

The ID of the tab in which the request takes place. Set to -1 if the request isn't related to a tab.

thirdParty: boolean

Indicates if this request and its content window hierarchy is third party.

timeStamp: number

The time when this signal is triggered, in milliseconds since the epoch.

type: browser.webRequest.ResourceType

How the requested resource will be used.

url: string
urlClassification?: UrlClassification

Tracking classification if the request has been classified.