IHttpFetcher (Norconex HTTP Collector 3.1.0 API)

All Known Implementing Classes:

AbstractHttpFetcher, GenericHttpFetcher, PhantomJSDocumentFetcher, WebDriverHttpFetcher
```
public interface IHttpFetcher
```
Fetches HTTP resources.

Since:

3.0.0

Author:

Pascal Essiembre

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`accept(Doc doc, HttpMethod httpMethod)`
`IHttpFetchResponse`	`fetch(CrawlDoc doc, HttpMethod httpMethod)`	Performs an HTTP request for the supplied document reference and HTTP method.
`String`	`getUserAgent()`

- Method Detail
  - getUserAgent
```
String getUserAgent()
```
  - accept
```
boolean accept(Doc doc,
               HttpMethod httpMethod)
```
  - fetch
```
IHttpFetchResponse fetch(CrawlDoc doc,
                         HttpMethod httpMethod)
                  throws HttpFetchException
```
    Performs an HTTP request for the supplied document reference and HTTP method.
    
    For each HTTP method supported, implementors should do their best to populate the document and its CrawlDocInfo with as much information they can.
    
    Unsupported HTTP methods should return an HTTP response with the CrawlState.UNSUPPORTED state. To prevent userse having to configure multiple HTTP clients, implementors should try to support both the GET and HEAD methods. POST is only used in special cases and is often not used during a crawl session.
    
    A null method is treated as a GET.
    
    Parameters:
    
    doc - document to fetch or to use to make the request.
    
    httpMethod - HTTP method
    
    Returns:
    
    an HTTP response
    
    Throws:
    
    HttpFetchException - problem when fetching the document
    
    See Also:
    
    HttpFetchResponseBuilder.unsupported()