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= nng_http_conn_write_res(3)
//
// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2018 Capitar IT Group BV <info@capitar.com>
//
// This document is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
== NAME
nng_http_conn_write_res - write HTTP response
== SYNOPSIS
[source, c]
-----------
#include <nng/nng.h>
#include <nng/supplemental/http/http.h>
void nng_http_conn_write_res(nng_http_conn *conn, nng_http_res *res,
nng_aio *aio);
-----------
== DESCRIPTION
The `nng_http_conn_write_res()` function starts an asynchronous write of
the HTTP response _res_ to the connection _conn_. The entire response is sent,
including headers, and if present, the response body data. (The
response body can be set with
<<nng_http_res_set_data#,nng_http_res_set_data(3)>> or
<<nng_http_res_copy_data#,nng_http_res_copy_data(3)>>.)
This function returns immediately, with no return value. Completion of
the operation is signaled via the _aio_, and the final result may be
obtained via <<nng_aio_result#,nng_aio_result(3)>>. That result will
either be zero or an error code.
=== Persistent Connections
By default, for `HTTP/1.1` connections, the connection is kept open, and
will be reused to receive new requests.
If however the _res_ contains a header of `Connection:` with a value
of `Close` (case-insensitive) or the response corresponds to `HTTP/1.0`,
then the connection is immediately after sending the response.
== RETURN VALUES
None.
== ERRORS
`NNG_ECANCELED`:: The operation was canceled.
`NNG_ECLOSED`:: The connection was closed.
`NNG_ECONNRESET`:: The peer closed the connection.
`NNG_ENOMEM`:: Insufficient free memory to perform the operation.
`NNG_ENOTSUP`:: HTTP operations are not supported.
`NNG_ETIMEDOUT`:: Timeout waiting for data from the connection.
== SEE ALSO
<<nng_aio_alloc#,nng_aio_alloc(3)>>,
<<nng_aio_result#,nng_aio_result(3)>>,
<<nng_http_client_connect#,nng_http_client_connect(3)>>,
<<nng_http_conn_read_all#,nng_http_conn_read_all(3)>>,
<<nng_strerror#,nng_strerror(3)>>,
<<nng#,nng(7)>>
|
