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+= nng_msg_header(3)
+:doctype: manpage
+:manmanual: nng
+:mansource: nng
+:manvolnum: 3
+:copyright: Copyright 2018 Staysail Systems, Inc. <info@staysail.tech> \
+            Copyright 2018 Capitar IT Group BV <info@capitar.com> \
+            This software 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_msg_header - return message header
+
+== SYNOPSIS
+
+[source, c]
+-----------
+#include <nng/nng.h>
+
+void *nng_msg_header(nng_msg *msg);
+-----------
+
+== DESCRIPTION
+
+The `nng_msg_header()` function returns a pointer to the start of the header
+content of the message _msg_.
+
+NOTE: The message header contains protocol-specific header content.  Most
+applications should not need to access this content, but it is available
+for raw mode sockets (set with the `NNG_OPT_RAW` option -- see
+<<nng_setopt#,nng_setopt(3)>> for more details.)
+
+NOTE: The value returned by this is invalidated by a call to any of the
+functions that modify the message or the header content.
+
+== RETURN VALUES
+
+Pointer to start of message header.
+
+== ERRORS
+
+None.
+
+== SEE ALSO
+
+<<nng_msg_alloc#,nng_msg_alloc(3)>>,
+<<nng_msg_body#,nng_msg_body(3)>>,
+<<nng_msg_free#,nng_msg_free(3)>>,
+<<nng_msg_header_append#,nng_msg_header_append(3)>>,
+<<nng_msg_header_chop#,nng_msg_header_chop(3)>>,
+<<nng_msg_header_insert#,nng_msg_header_insert(3)>>
+<<nng_msg_header_len#,nng_msg_header_len(3)>>,
+<<nng_msg_header_trim#,nng_msg_header_trim(3)>>,
+<<nng#,nng(7)>>
+
+== COPYRIGHT
+
+Copyright 2018 mailto:info@staysail.tech[Staysail Systems, Inc.] +
+Copyright 2018 mailto:info@capitar.com[Capitar IT Group BV]
+
+This document is supplied under the terms of the
+https://opensource.org/licenses/MIT[MIT License].