= nng_http_res_alloc(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_res_alloc - allocate HTTP response structure
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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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int nng_http_res_alloc(nng_http_res **resp);
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----
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== DESCRIPTION
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The `nng_http_res_alloc()` function allocates a new HTTP response structure
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and stores a pointer to it in __resp__.
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The response will be initialized
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with status code 200 (`NNG_HTTP_STATUS_OK`), and a reason phrase of `OK`,
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and HTTP protocol version `HTTP/1.1`.
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TIP: When an error response is needed, consider using
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xref:nng_http_res_alloc_error.3http.adoc[`nng_http_res_alloc_error()`] instead.
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== RETURN VALUES
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This function returns 0 on success, and non-zero otherwise.
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== ERRORS
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[horizontal]
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`NNG_ENOMEM`:: Insufficient free memory exists to allocate a message.
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`NNG_ENOTSUP`:: HTTP support not configured.
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== SEE ALSO
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[.text-left]
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xref:nng_http_conn_read_res.3http.adoc[nng_http_conn_read_res(3http)],
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xref:nng_http_conn_write_res.3http.adoc[nng_http_conn_write_res(3http)],
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xref:nng_http_req_alloc.3http.adoc[nng_http_req_alloc(3http)],
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xref:nng_http_res_alloc_error.3http.adoc[nng_http_res_alloc_error(3http)],
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xref:nng_http_res_add_header.3http.adoc[nng_http_res_add_header(3http)],
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xref:nng_http_res_copy_data.3http.adoc[nng_http_res_copy_data(3http)],
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xref:nng_http_res_del_header.3http.adoc[nng_http_res_del_header(3http)],
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xref:nng_http_res_free.3http.adoc[nng_http_res_free(3http)],
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xref:nng_http_res_get_header.3http.adoc[nng_http_res_get_header(3http)],
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xref:nng_http_res_get_reason.3http.adoc[nng_http_res_get_reason(3http)],
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xref:nng_http_res_get_status.3http.adoc[nng_http_res_get_status(3http)],
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xref:nng_http_res_get_version.3http.adoc[nng_http_res_get_version(3http)],
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xref:nng_http_res_reset.3http.adoc[nng_http_res_reset(3http)],
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xref:nng_http_res_set_data.3http.adoc[nng_http_res_set_data(3http)],
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xref:nng_http_res_set_reason.3http.adoc[nng_http_res_set_reason(3http)],
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xref:nng_http_res_set_status.3http.adoc[nng_http_res_set_status(3http)],
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xref:nng_http_res_set_version.3http.adoc[nng_http_res_set_version(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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