ne_get_response_header
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## Name

ne_get_response_header, ne_response_header_iterate — functions to access response headers

## Synopsis

    #include <ne_request.h>

``const char *ne_get_response_header(`ne_request *request, const char *name`)`;`
``void *ne_response_header_iterate(`ne_request *request, void *cursor, const char **name, const char **value`)`;`

## Description

To retrieve the value of a response header field, the `ne_get_response_header` function can be used, and is given the name of the header to return.

To iterate over all the response headers returned, the `ne_response_header_iterate` function can be used. This function takes a `cursor` parameter which should be `NULL` to retrieve the first header. The function stores the name and value of the next header header in the `name` and `value` parameters, and returns a new cursor pointer which can be passed to `ne_response_header_iterate` to retrieve the next header.

## Return value

`ne_get_response_header` returns a string, or `NULL` if no header with that name was given. If used during request processing, the return value pointer is valid only until the next call to `ne_begin_request`, or else, until the request object is destroyed.

Likewise, the cursor, names, and values returned by `ne_response_header_iterate` are only valid until the next call to `ne_begin_request` or until the request object is destroyed.

## Examples

The following code will output the value of the `Last-Modified` header for a resource:

    ne_request *req = ne_request_create(sess, "GET", "/foo.txt");
    if (ne_request_dispatch(req) == NE_OK) {
        const char *mtime = ne_get_response_header(req, "Last-Modified");
        if (mtime) {
            printf("/foo.txt has last-modified value %s\n", mtime);
        }
    }
    ne_request_destroy(req);

## See also

ne_request_create, ne_request_destroy.

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