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+= nng_http_res_alloc_error(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_res_alloc_error - allocate HTTP error response
+
+== SYNOPSIS
+
+[source, c]
+-----------
+#include <nng/nng.h>
+#include <nng/supplemental/http/http.h>
+
+int nng_http_res_alloc_error(nng_http_res **resp, uint16_t status);
+-----------
+
+== DESCRIPTION
+
+The `nng_http_res_alloc_error()` function allocates a new HTTP response structure
+and stores a pointer to it in __resp__.  The response will be initialized
+with the status code _status_, a corresponding reason phrase, and
+a simple HTML page containing the same information will be generated and
+attached to the response. (Relevant HTTP headers will be set as well,
+such as `Content-Type` and `Content-Length`.)  The HTTP protocol version
+is also set to "HTTP/1.1".
+
+TIP: This is the simplest way to generate an error response.
+
+== 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_res_alloc#,nng_http_res_alloc(3)>>,
+<<nng_http_res_free#,nng_http_res_free(3)>>,
+<<nng_http_res_set_reason#,nng_http_res_set_reason(3)>>,
+<<nng_http_res_set_status#,nng_http_res_set_status(3)>>,
+<<nng_strerror#,nng_strerror(3)>>,
+<<nng#,nng(7)>>