Add message handling man pages.

Note that we're also no longer overriding the source formatter or
the icons for new pages, since we can supply that on the command
line in the script that generates output.

1 files changed, 62 insertions, 0 deletions

diff --git a/docs/nng_msg_header_insert.adoc b/docs/nng_msg_header_insert.adoc
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+= nng_msg_header_insert(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_insert, nng_msg_header_insert_u32 - prepend to message header
+
+== SYNOPSIS
+
+[source, c]
+-----------
+#include <nng/nng.h>
+
+int nng_msg_header_insert(nng_msg *msg, const void *val, size_t size);
+int nng_msg_header_insert_u32(nng_msg *msg, uint32_t val32);
+-----------
+
+== DESCRIPTION
+
+The `nng_msg_header_insert()` and `nng_msg_header_insert_u32()` functions
+prepend data to the front of the headers of message _msg_, reallocating
+if necessary.
+The first function prepends _size_ bytes, copying them from _val_.  The
+second function prepends the value _val32_ in network-byte order (big-endian).
+
+== RETURN VALUES
+
+This function returns 0 on success, and non-zero otherwise.
+
+== ERRORS
+
+`NNG_ENOMEM`:: Insufficient free memory exists.
+
+== SEE ALSO
+
+<<nng_msg_alloc#,nng_msg_alloc(3)>>,
+<<nng_msg_header_append#,nng_msg_header_append(3)>>,
+<<nng_msg_header_body#,nng_msg_header_body(3)>>,
+<<nng_msg_header_chop#,nng_msg_header_chop(3)>>,
+<<nng_msg_header_len#,nng_msg_header_len(3)>>,
+<<nng_msg_header_trim#,nng_msg_header_trim(3)>>,
+<<nng_msg_free#,nng_msg_free(3)>>,
+<<nng_msg_realloc#,nng_msg_realloc(3)>>,
+<<nng_strerror#,nng_strerror(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].