= nng_http_res_alloc(3)
:doctype: manpage
:manmanual: nng
:mansource: nng
:manvolnum: 3
:copyright: Copyright 2018 mailto:info@staysail.tech[Staysail Systems, Inc.] + \
            Copyright 2018 mailto:info@capitar.com[Capitar IT Group BV] + \
            {blank} + \
            This document is supplied under the terms of the \
            https://opensource.org/licenses/MIT[MIT License].

== NAME

nng_http_res_alloc - allocate HTTP response structure

== SYNOPSIS

[source, c]
-----------
#include <nng/nng.h>

int nng_http_res_alloc(nng_http_res **resp);
-----------


== DESCRIPTION

The `nng_http_res_alloc()` function allocates a new HTTP response structure
and stores a pointer to it in __resp__.  The response will be initialized
with status code 200 (`NNG_HTTP_STATUS_OK`), and a reason phrase of "OK",
and HTTP protocol version "HTTP/1.1".

TIP: When an error response is needed, consider using
<<nng_http_res_alloc_error#,nng_http_res_alloc_error(3)>> instead.

== RETURN VALUES

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

== ERRORS

`NNG_ENOMEM`:: Insufficient free memory exists to allocate a message.
`NNG_ENOTSUP`:: HTTP support not configured.

== SEE ALSO

<<nng_http_conn_read_res#,nng_http_conn_read_res(3)>>,
<<nng_http_conn_write_res#,nng_http_conn_write_res(3)>>,
<<nng_http_req_alloc#,nng_http_req_alloc(3)>>,
<<nng_http_res_alloc_errror#,nng_http_res_alloc_error(3)>>,
<<nng_http_res_add_header#,nng_http_res_add_header(3)>>,
<<nng_http_res_copy_data#,nng_http_res_copy_data(3)>>,
<<nng_http_res_del_header#,nng_http_res_del_header(3)>>,
<<nng_http_res_free#,nng_http_res_free(3)>>,
<<nng_http_res_get_header#,nng_http_res_get_header(3)>>,
<<nng_http_res_get_reason#,nng_http_res_get_reason(3)>>,
<<nng_http_res_get_status#,nng_http_res_get_status(3)>>,
<<nng_http_res_get_version#,nng_http_res_get_version(3)>>,
<<nng_http_res_set_data#,nng_http_res_set_data(3)>>,
<<nng_http_res_set_reason#,nng_http_res_set_reason(3)>>,
<<nng_http_res_set_status#,nng_http_res_set_status(3)>>,
<<nng_http_res_set_version#,nng_http_res_set_version(3)>>,
<<nng_strerror#,nng_strerror(3)>>,
<<nng#,nng(7)>>

== COPYRIGHT

{copyright}