oxmox
7063e2102e
git-subtree-dir: external/nng git-subtree-split: 29b73962b939a6fbbf6ea8d5d7680bb06d0eeb99
81 lines
2.7 KiB
Text
81 lines
2.7 KiB
Text
= nng_http_conn_write_res(3http)
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//
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// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
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// Copyright 2018 Capitar IT Group BV <info@capitar.com>
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//
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// This document is supplied under the terms of the MIT License, a
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// copy of which should be located in the distribution where this
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// file was obtained (LICENSE.txt). A copy of the license may also be
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// found online at https://opensource.org/licenses/MIT.
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//
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== NAME
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nng_http_conn_write_res - write HTTP response
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== SYNOPSIS
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[source, c]
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----
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#include <nng/nng.h>
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#include <nng/supplemental/http/http.h>
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void nng_http_conn_write_res(nng_http_conn *conn, nng_http_res *res,
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nng_aio *aio);
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----
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== DESCRIPTION
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The `nng_http_conn_write_res()` function starts an asynchronous write of
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the HTTP response _res_ to the connection _conn_.
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The entire response is sent,
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including headers, and if present, the response body data.
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(The response body can be set with
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xref:nng_http_res_set_data.3http.adoc[`nng_http_res_set_data()`] or
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xref:nng_http_res_copy_data.3http.adoc[`nng_http_res_copy_data()`].)
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This function returns immediately, with no return value.
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Completion of the operation is signaled via the _aio_, and the final result
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may be obtained via xref:nng_aio_result.3.adoc[`nng_aio_result()`].
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That result will either be zero or an error code.
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=== Persistent Connections
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By default, for `HTTP/1.1` connections, the connection is kept open, and
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will be reused to receive new requests.
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If however the _res_ contains a header of `Connection:` with a value
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of `Close` (case-insensitive) or the response corresponds to `HTTP/1.0`,
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then the connection is immediately after sending the response.
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NOTE: Consider using the
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xref:nng_http_client_transact.3http.adoc[`nng_http_client_transact()`] or
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xref:nng_http_conn_transact.3http.adoc[`nng_http_conn_transact()`] functions,
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which provide a simpler interface for performing a complete HTTP client
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transaction.
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== RETURN VALUES
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None.
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== ERRORS
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[horizontal]
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`NNG_ECANCELED`:: The operation was canceled.
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`NNG_ECLOSED`:: The connection was closed.
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`NNG_ECONNRESET`:: The peer closed the connection.
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`NNG_ENOMEM`:: Insufficient free memory to perform the operation.
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`NNG_ENOTSUP`:: HTTP operations are not supported.
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`NNG_ETIMEDOUT`:: Timeout waiting for data from the connection.
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== SEE ALSO
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[.text-left]
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xref:nng_aio_alloc.3.adoc[nng_aio_alloc(3)],
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xref:nng_aio_result.3.adoc[nng_aio_result(3)],
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xref:nng_http_client_connect.3http.adoc[nng_http_client_connect(3http)],
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xref:nng_http_client_transact.3http.adoc[nng_http_client_transact(3http)],
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xref:nng_http_conn_read_all.3http.adoc[nng_http_conn_read_all(3http)],
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xref:nng_http_conn_transact.3http.adoc[nng_http_conn_transact(3http)],
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xref:nng_strerror.3.adoc[nng_strerror(3)],
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xref:nng.7.adoc[nng(7)]
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