HttpInterceptor
Intercepts HttpRequest and handles them.
interface HttpInterceptor {
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>
}
Description
Most interceptors will transform the outgoing request before passing it to the
next interceptor in the chain, by calling next.handle(transformedReq).
In rare cases, interceptors may wish to completely handle a request themselves, and not delegate to the remainder of the chain. This behavior is allowed.
Methods
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Intercept an outgoing |
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Parameters
Returns
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Typically an interceptor will transform the outgoing request before returning
More rarely, an interceptor may choose to completely handle the request itself,
and compose a new event stream instead of invoking It is also rare but valid for an interceptor to return multiple responses on the event stream for a single request. |