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git-subtree-dir: external/nng git-subtree-split: 169221da8d53b2ca4fda76f894bee8505887a7c6
73 lines
2.5 KiB
Text
73 lines
2.5 KiB
Text
= nng_http_server_set_error_file(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_server_set_error_file - set custom HTTP error file
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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_server_set_error_file(nng_http_server *server,
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uint16_t code, const char *path);
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----
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== DESCRIPTION
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The `nng_http_server_set_error_file()` sets an error page to be used
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for HTTP status _code_ on the server instance _server_.
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The body content of the HTTP responses will contain the file contents of
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the file located at _path_, which should be an HTML file.
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The custom HTML content will be used when the server is returning an
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internally generated error response, or is returning an error response
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that was allocated with the
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xref:nng_http_res_alloc_error.3http.adoc[`nng_http_res_alloc_error()`]
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function.
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This HTML content will also be used if the application calls the
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xref:nng_http_server_res_error.3http.adoc[`nng_http_server_res_error()`].
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The last custom error page set for _code_ by either this function or
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xref:`nng_http_server_set_error_page.3http.adoc[`nng_http_server_error_page()`]
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will be used.
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NOTE: Error responses that have their body content changed after allocation,
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or that are written directly by the application, will not use the body
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content supplied here.
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NOTE: The file contents of _path_ are read when this function is called.
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Therefore, if the file contents are changed, then this function should
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be called again to update the error page.
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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_ENOENT`:: The file named by _path_ does not exist.
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`NNG_EPERM`:: No permission to read the file named by _path_.
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`NNG_ENOMEM`:: Insufficient free memory exists.
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`NNG_ENOTSUP`:: HTTP not supported.
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== SEE ALSO
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[.text-left]
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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_server_hold.3http.adoc[nng_http_server_hold(3http)],
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xref:nng_http_server_res_error.3http.adoc[nng_http_server_res_error(3http)],
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xref:nng_http_server_set_error_page.3http.adoc[nng_http_server_set_error_page(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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