nng_http_res_copy_data.3http.adoc

nng_http_res_copy_data(3http)

NAME

nng_http_res_copy_data - copy HTTP response body

SYNOPSIS

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

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

DESCRIPTION

The nng_http_res_copy_data() makes a copy of body (of size size) and sets the HTTP body for the response res to it. The copy will be deallocated automatically when res is freed.

The copied 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.

Tip	To avoid copying data, the nng_http_res_set_data() may be used instead.

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_set_data(3http), nng_http_res_set_header(3http), nng(7)