[docs] Describe connection types

4 files changed, 89 insertions, 15 deletions

diff --git a/docs/rfc.html b/docs/rfc.html
index aaa92ce..84b5c0a 100644
--- a/docs/rfc.html
+++ b/docs/rfc.html
@@ -1220,7 +1220,7 @@ li > p:last-of-type:only-child {
 </tr></thead>
 <tfoot><tr>
 <td class="left">bt</td>
-<td class="center">Expires 12 October 2026</td>
+<td class="center">Expires 16 October 2026</td>
 <td class="right">[Page]</td>
 </tr></tfoot>
 </table>
@@ -1233,12 +1233,12 @@ li > p:last-of-type:only-child {
 <dd class="internet-draft">SOLEC</dd>
 <dt class="label-published">Published:</dt>
 <dd class="published">
-<time datetime="2026-04-10" class="published">10 April 2026</time>
+<time datetime="2026-04-14" class="published">14 April 2026</time>
     </dd>
 <dt class="label-intended-status">Intended Status:</dt>
 <dd class="intended-status">Experimental</dd>
 <dt class="label-expires">Expires:</dt>
-<dd class="expires"><time datetime="2026-10-12">12 October 2026</time></dd>
+<dd class="expires"><time datetime="2026-10-16">16 October 2026</time></dd>
 <dt class="label-authors">Author:</dt>
 <dd class="authors">
 <div class="author">
@@ -1274,7 +1274,7 @@ SOLEC system.<a href="#section-abstract-1" class="pilcrow">¶</a></p>
         time. It is inappropriate to use Internet-Drafts as reference
         material or to cite them other than as "work in progress."<a href="#section-boilerplate.1-3" class="pilcrow">¶</a></p>
 <p id="section-boilerplate.1-4">
-        This Internet-Draft will expire on 12 October 2026.<a href="#section-boilerplate.1-4" class="pilcrow">¶</a></p>
+        This Internet-Draft will expire on 16 October 2026.<a href="#section-boilerplate.1-4" class="pilcrow">¶</a></p>
 </section>
 </div>
 <div id="copyright">
@@ -1675,8 +1675,42 @@ Text is encoded using UTF-8.<a href="#section-2.3.3-1" class="pilcrow">¶</a></p
                 <td class="text-left" rowspan="1" colspan="1">uint8</td>
                 <td class="text-left" rowspan="1" colspan="1">ver_minor</td>
               </tr>
+              <tr>
+                <td class="text-left" rowspan="1" colspan="1">uint8</td>
+                <td class="text-left" rowspan="1" colspan="1">conn_type</td>
+              </tr>
             </tbody>
           </table>
+<div id="connection-types">
+<section id="section-2.4.3.1">
+            <h5 id="name-connection-types">
+<a href="#section-2.4.3.1" class="section-number selfRef">2.4.3.1. </a><a href="#name-connection-types" class="section-name selfRef">Connection types</a>
+            </h5>
+<p id="section-2.4.3.1-1"><code>conn_type</code> specifies type of the connection. User connecting to server
+should use <code>0x01</code>. If connection is initialize between two servers to exchange
+message connection type should be <code>0x02</code>. Depending on connection type
+different auth method will be used.<a href="#section-2.4.3.1-1" class="pilcrow">¶</a></p>
+<table class="center" id="table-5">
+              <caption><a href="#table-5" class="selfRef">Table 5</a></caption>
+<thead>
+                <tr>
+                  <th class="text-left" rowspan="1" colspan="1">Type</th>
+                  <th class="text-left" rowspan="1" colspan="1">Connection type</th>
+                </tr>
+              </thead>
+              <tbody>
+                <tr>
+                  <td class="text-left" rowspan="1" colspan="1">0x01</td>
+                  <td class="text-left" rowspan="1" colspan="1">User -&gt; Server</td>
+                </tr>
+                <tr>
+                  <td class="text-left" rowspan="1" colspan="1">0x02</td>
+                  <td class="text-left" rowspan="1" colspan="1">Server -&gt; Server</td>
+                </tr>
+              </tbody>
+            </table>
+</section>
+</div>
 </section>
 </div>
 <div id="auth">
@@ -1684,8 +1718,8 @@ Text is encoded using UTF-8.<a href="#section-2.3.3-1" class="pilcrow">¶</a></p
           <h4 id="name-auth">
 <a href="#section-2.4.4" class="section-number selfRef">2.4.4. </a><a href="#name-auth" class="section-name selfRef">Auth</a>
           </h4>
-<table class="center" id="table-5">
-            <caption><a href="#table-5" class="selfRef">Table 5</a></caption>
+<table class="center" id="table-6">
+            <caption><a href="#table-6" class="selfRef">Table 6</a></caption>
 <thead>
               <tr>
                 <th class="text-left" rowspan="1" colspan="1">Type</th>
@@ -1710,8 +1744,8 @@ Text is encoded using UTF-8.<a href="#section-2.3.3-1" class="pilcrow">¶</a></p
           <h4 id="name-message">
 <a href="#section-2.4.5" class="section-number selfRef">2.4.5. </a><a href="#name-message" class="section-name selfRef">Message</a>
           </h4>
-<table class="center" id="table-6">
-            <caption><a href="#table-6" class="selfRef">Table 6</a></caption>
+<table class="center" id="table-7">
+            <caption><a href="#table-7" class="selfRef">Table 7</a></caption>
 <thead>
               <tr>
                 <th class="text-left" rowspan="1" colspan="1">Type</th>
@@ -1746,8 +1780,8 @@ Text is encoded using UTF-8.<a href="#section-2.3.3-1" class="pilcrow">¶</a></p
           </h4>
 <p id="section-2.4.6-1">Test payload is used for encoder and decoders testing. Clients and servers
 should ignore this kind of payload.<a href="#section-2.4.6-1" class="pilcrow">¶</a></p>
-<table class="center" id="table-7">
-            <caption><a href="#table-7" class="selfRef">Table 7</a></caption>
+<table class="center" id="table-8">
+            <caption><a href="#table-8" class="selfRef">Table 8</a></caption>
 <thead>
               <tr>
                 <th class="text-left" rowspan="1" colspan="1">Type</th>
diff --git a/docs/rfc.md b/docs/rfc.md
index eb8f5c1..8c5818e 100644
--- a/docs/rfc.md
+++ b/docs/rfc.md
@@ -186,6 +186,19 @@ Payload is always empty for this type.
 |-------|-----------|
 | uint8 | ver_major |
 | uint8 | ver_minor |
+| uint8 | conn_type |
+
+#### Connection types
+
+`conn_type` specifies type of the connection. User connecting to server
+should use `0x01`. If connection is initialize between two servers to exchange
+message connection type should be `0x02`. Depending on connection type
+different auth method will be used.
+
+| Type | Connection type  |
+|------|------------------|
+| 0x01 | User -> Server   |
+| 0x02 | Server -> Server |
 
 ### Auth
 
diff --git a/docs/rfc.txt b/docs/rfc.txt
index a19de19..f9e8bca 100644
--- a/docs/rfc.txt
+++ b/docs/rfc.txt
@@ -1,7 +1,7 @@
 SOLEC Working Group                                              bt, Ed.
 Internet-Draft                                                  RCTT.net
-Intended status: Experimental                              10 April 2026
-Expires: 12 October 2026
+Intended status: Experimental                              14 April 2026
+Expires: 16 October 2026
 
 
              System of Lightweight Electronic Communication
@@ -209,9 +209,28 @@ Table of Contents
                            +-------+-----------+
                            | uint8 | ver_minor |
                            +-------+-----------+
+                           | uint8 | conn_type |
+                           +-------+-----------+
 
                                   Table 4
 
+2.4.3.1.  Connection types
+
+   conn_type specifies type of the connection.  User connecting to
+   server should use 0x01.  If connection is initialize between two
+   servers to exchange message connection type should be 0x02.
+   Depending on connection type different auth method will be used.
+
+                        +======+==================+
+                        | Type | Connection type  |
+                        +======+==================+
+                        | 0x01 | User -> Server   |
+                        +------+------------------+
+                        | 0x02 | Server -> Server |
+                        +------+------------------+
+
+                                  Table 5
+
 2.4.4.  Auth
 
                            +========+==========+
@@ -222,7 +241,7 @@ Table of Contents
                            | string | password |
                            +--------+----------+
 
-                                  Table 5
+                                  Table 6
 
 2.4.5.  Message
 
@@ -238,7 +257,7 @@ Table of Contents
                       | string    | message_content |
                       +-----------+-----------------+
 
-                                  Table 6
+                                  Table 7
 
 2.4.6.  Test
 
@@ -265,7 +284,7 @@ Table of Contents
                            | uint64    | num4  |
                            +-----------+-------+
 
-                                  Table 7
+                                  Table 8
 
 2.5.  Sequential operations
 
diff --git a/solec.ksy b/solec.ksy
index 2a4a346..7117413 100644
--- a/solec.ksy
+++ b/solec.ksy
@@ -35,6 +35,11 @@ enums:
 
   error_type:
     0x01: auth_failed
+    0x02: not_found
+
+  conn_type:
+    0x01: user_conn
+    0x02: server_conn
 
 types:
   string:
@@ -67,6 +72,9 @@ types:
         type: u1
       - id: proto_ver_minor
         type: u1
+      - id: conn_type
+        type: u1
+        enum: conn_type
 
   auth:
     seq: