implemented basic request

doc/protocol.md

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+# Webufse 2 Protocol
+
+## Endianness
+
+All numeric data types are transferred in [Big Endian](https://en.wikipedia.org/wiki/Endianness).  
+For instance, the uint32 value 1 will be transferred as
+
+    00 00 00 01
+
+## Data Types
+
+### Basic data types
+
+| Data | Width  | Description |
+| ---- | ------ | ----------- |
+| bool |  8 bit | Represents a boolean value |
+| i32  | 32 bit |
+
+## Message
+
+
+
+## Methods
+
+### access
+
+| Field | Data Type        | Description |
+| ----- | ---------------- | ----------- |
+|       | uint32           | message id  |
+| type  | uint8            | message type (0x00) |
+| path  | string           | |
+| mode  | access_mode (i8) |
+
+#### Response
+
+| Field |