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+meta:
+  id: solec
+  file-extension: hex
+  endian: be
+
+doc: SOLEC protocol
+doc-ref: https://git.rctt.net/solec/plain/docs/protocol.svg?h=main
+
+seq:
+  - id: type_payload
+    type: u1
+    enum: payload_type
+  - id: len_payload
+    type: u2
+  - id: payload
+    size: len_payload
+    type:
+      switch-on: type_payload
+      cases:
+        'payload_type::success': success
+        'payload_type::error': error
+        'payload_type::handshake': handshake
+        'payload_type::user_auth': user_auth
+        'payload_type::server_auth': server_auth
+        'payload_type::message': message
+        'payload_type::test': test
+
+enums:
+  payload_type:
+    0x01: success
+    0x02: error
+    0x03: handshake
+    0x04: user_auth
+    0x05: message
+    0x06: server_auth
+    0xFF: test
+
+  error_type:
+    0x01: user_auth_failed
+    0x02: not_found
+
+  conn_type:
+    0x01: user_conn
+    0x02: server_conn
+
+types:
+  string:
+    doc: UTF-8 encoded string.
+    seq:
+      - id: len_payload
+        type: u2
+      - id: payload
+        type: str
+        size: len_payload
+        encoding: UTF-8
+
+  success:
+    doc: Send from server if operation succeded.
+
+  error:
+    doc: Senf from server if operation failed.
+    seq:
+      - id: error_code
+        type: u1
+        enum: error_type
+
+  handshake:
+    doc: |
+      Handshake is sent by the client during connection initialization.
+      If protocol_ver_major is different than version used by the server
+      connection will be aborted.
+    seq:
+      - id: proto_ver_major
+        type: u1
+      - id: proto_ver_minor
+        type: u1
+      - id: conn_type
+        type: u1
+        enum: conn_type
+
+  user_auth:
+    seq:
+      - id: name
+        type: string
+      - id: pass
+        type: string
+
+  server_auth:
+    seq:
+      - id: name
+        type: string
+
+  message:
+    doc: |
+      Source and target fields are addresses in user@server format.
+    seq:
+      - id: source
+        type: string
+      - id: target
+        type: string
+      - id: timestamp
+        doc: Set just before sending the message.
+        type: u8
+      - id: content
+        type: string
+
+  test:
+    doc: Test payload, used for parsers testing
+    seq:
+      - id: num1
+        type: u1
+      - id: time1
+        type: u8
+      - id: str1
+        type: string
+      - id: num2
+        type: u2
+      - id: str2
+        type: string
+      - id: num3
+        type: u4
+      - id: str3
+        type: string
+      - id: num4
+        type: u8
+