nng_http_res_set_data.3http.adoc

nng_http_res_set_data(3http)

NAME

nng_http_res_set_data - set HTTP response body

SYNOPSIS

#include <nng/nng.h>
#include <nng/supplemental/http/http.h>

int nng_http_res_set_data(nng_http_res *res, const void *body, size_t size);

DESCRIPTION

The nng_http_res_set_data() sets the HTTP body associated with the response res to body, and the size of the body to size. This body data will be automatically sent with the response when it is sent using nng_http_conn_write_res().

This also updates the relevant Content-Length header of res.

Note	The current framework does not support sending data via chunked transfer-encoding.

The body is not copied, and the caller must ensure that it is available until the res is deallocated.

Tip	To have a local copy allocated with res that will be automatically deallocated when res is freed, see nng_http_res_copy_data().

Tip	It is a good idea to also set the Content-Type header.

RETURN VALUES

This function returns 0 on success, and non-zero otherwise.

ERRORS

NNG_ENOMEM	Insufficient memory to perform the operation.
NNG_ENOTSUP	No support for HTTP in the library.

SEE ALSO

nng_http_conn_write_res(3http), nng_http_res_alloc(3http), nng_http_res_copy_data(3http), nng_http_res_set_header(3http), nng(7)