fixes #845 TCP public API doc updates

1 files changed, 67 insertions, 0 deletions

diff --git a/docs/man/nng_tcp_dialer_getopt.3tcp.adoc b/docs/man/nng_tcp_dialer_getopt.3tcp.adoc
new file mode 100644
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--- /dev/null
+++ b/docs/man/nng_tcp_dialer_getopt.3tcp.adoc
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+= nng_tcp_dialer_getopt(3tcp)
+//
+// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
+// Copyright 2018 Capitar IT Group BV <info@capitar.com>
+// Copyright 2019 Devolutions <info@devolutions.net>
+//
+// 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_tcp_dialer_getopt - get option from TCP dialer
+
+== SYNOPSIS
+
+[source, c]
+----
+#include <nng/nng.h>
+#include <nng/supplemental/tcp/tcp.h>
+
+int nng_tcp_getopt(nng_tcp_dialer *d, const char *name, void *data, size_t *sizep);
+----
+
+== DESCRIPTION
+
+The `nng_tcp_dialer_getopt()` is used to retrieve the value of the option _name_ for the <<nng_tcp_dialer.5#,TCP dialer>> _d_.
+The size of the buffer located at _data_ to receive the copy is passed by the
+caller at the location referenced by _sizep_.
+If this size is sufficient to hold the entire object, the object is copied into
+the buffer specified by _data_.
+In either event, the size of the source object (the amount of data copied,
+or that would have been copied if sufficient space were available) is stored
+at the location of _sizep_.
+
+=== Options
+
+The options specifically suppported for retrieval from TCP dialers are:
+
+* <<nng_options.5#NNG_OPT_LOCADDR,`NNG_OPT_LOCADDR`>>
+* <<nng_options.5#NNG_OPT_TCP_KEEPALIVE,`NNG_OPT_TCP_KEEPALIVE`>>
+* <<nng_options.5#NNG_OPT_TCP_NODELAY,`NNG_OPT_TCP_NODELAY`>>
+
+== RETURN VALUES
+
+This function returns 0 on success, and non-zero otherwise.
+
+== ERRORS
+
+[horizontal]
+`NNG_ECLOSED`:: The dialer is closed.
+`NNG_EINVAL`:: There was insufficient space to receive the object.
+	The amount of data actually needed is returned in _sizep_.
+`NNG_ENOTSUP`:: The option _name_ is not supported.
+`NNG_EWRITEONLY`:: The option _name_ may not read.
+
+== SEE ALSO
+
+[.text-left]
+<<nng_tcp_dialer_setopt.3tcp#,nng_tcp_dialer_setopt(3tcp)>>,
+<<nng_tcp_getopt.3tcp#,nng_tcp_getopt(3tcp)>>,
+<<nng_options.5#,nng_options(5)>>,
+<<nng_strerror.3#,nng_strerror(3)>>,
+<<nng_tcp.5#,nng_tcp(5)>>,
+<<nng_tcp_dialer.5#,nng_tcp_dialer(5)>>