fixes #286 nng_pair0_open (and all others) need man page

fixes #279 consider restructuring man sections

This represents a rather significant rework, and major editing
effort, for the entire set of manual pages.

All of the pages now have a section number in their filename;
this assists in some other tooling, particularly ebook generation
as every link needs to be programmatically modified when combined
into an ebook.

Section 5 is introduced, and populated with pages for the main
types, and all options are now documented.

Numerous errors have been corrected, including rewriting certain
portions such as the header section of the surveyor protocol.

Much work has been done to facilitate index generation, although
certainly more work remains here.

Every internal link within these pages now resolves; there are no
more dead links.  (This is required to generate Kindle format books.)

1 files changed, 0 insertions, 107 deletions

diff --git a/docs/man/nng_surveyor.adoc b/docs/man/nng_surveyor.adoc
deleted file mode 100644
index 15937b27..00000000
--- a/docs/man/nng_surveyor.adoc
+++ /dev/null
@@ -1,107 +0,0 @@
-= nng_surveyor(7)
-//
-// 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_surveyor - surveyor protocol
-
-== SYNOPSIS
-
-[source,c]
-----------
-#include <nng/protocol/survey0/survey.h>
-
-int nng_surveyor0_open(nng_socket *s);
-----------
-
-== DESCRIPTION
-
-The _nng_surveyor_ protocol is one half of a survey pattern.
-In this pattern, a surveyor sends a survey, which is broadcast to all
-peer respondents.  The respondents then have a chance to reply (but after
-not obliged to).  The survey itself is a timed event, so that responses
-received after the survey has finished are discarded.
-
-TIP: This protocol is useful in solving voting problems, such as leader
-election in cluster configurations, as well as certain kinds of service
-discovery problems.
-
-The _nng_surveyor_ protocol is the surveyor side, and the
-<<nng_respondent#,nng_respondent(7)>> protocol is the respondent side.
-
-=== Socket Operations
-
-The `nng_surveyor0_open()` call creates a respondent socket.  This socket
-may be used to send messages (surveys), and then to receive replies.  Generally
-a reply can only be received after sending a survey. Generally a surveyor
-can expect to receive at most one reply from each responder.  (Messages
-can be duplicated in some topologies, so there is no guarantee of this.)
-
-Attempts to receive on a socket with no outstanding survey will result
-in `NNG_ESTATE`.  If the survey times out while the surveyor is waiting
-for replies, then the result will be `NNG_ETIMEDOUT`.
-
-Only one survey can be outstanding at a time; sending another survey will
-cancel the prior one, and any responses from respondents from the prior
-survey that arrive after this will be discarded.
-
-Raw mode sockets (set with `NNG_OPT_RAW`) ignore all these restrictions.
-
-=== Protocol Versions
-
-Only version 0 of this protocol is supported.  (At the time of writing,
-no other versions of this protocol have been defined.  An earlier and
-incompatible version of the protocol was used in older pre-releases of
-http://nanomsg.org[nanomsg], but was not released in any production
-version.)
-
-=== Protocol Options
-
-The following protocol-specific options are available.
-
-`NNG_OPT_SURVEYOR_SURVEYTIME`::
-
-   This read/write option is a duration (32-bit unsigned integer) representing
-   a relative number of milliseconds that following surveys will last. 
-   When a new survey is started, a timer of this duration is also started.
-   Any responses arriving this time will be discarded.  Attempts to receive
-   after the timer expires with no other surveys started will result in
-   `NNG_ESTATE`.  Attempts to receive when this timer expires will result in
-   `NNG_ETIMEDOUT`.
-
-`NNG_OPT_MAXTTL`::
-
-   Maximum time-to-live.  This option is an integer value
-   between 0 and 255,
-   inclusive, and is the maximum number of "hops" that a message may
-   pass through until it is discarded.  The default value is 8.  A value
-   of 0 may be used to disable the loop protection, allowing an infinite
-   number of hops.
-
-=== Protocol Headers
-
-The _nng_surveyor_ protocol uses a _backtrace_ in the header.  This
-form uses an array of 32-bit big-endian identifiers, where the first
-element in the array
-identifies the local peer identifier to which the message will next be sent.
-This is a hop-by-hop header where each element in a path adds routing
-information to the end when sending a survey, and when replying removes
-elements to obtain the next hop information.  The survey ID is at the
-end of this header and is inserted into the header as its first element
-by the originating surveyor.  (Survey IDs are distinguished from hops by
-having their high order bit set to one.)
-
-// TODO: Insert reference to RFC.
-
-== SEE ALSO
-
-<<nng#,nng(7)>>,
-<<nng_respondent#,nng_respondent(7)>>