Implement smart buffer

src/structures/server.ts

@@ -1,16 +1,35 @@
-import { BufferReader } from '../buffer-reader'
+import { MAX_DATA_LENGTH } from '../common'
+import { SmartBuffer } from '../smart-buffer'
 
-export class IncomingPacket extends BufferReader {
-  messageType: number
-  senderId: number
-  length: number
-  data: Buffer
+export class IncomingPacket extends SmartBuffer {
+  fields: {
+    messageType: number
+    senderId: number
+    length: number
+    data: Uint8Array
+  }
 
-  constructor (data: Buffer) {
+  constructor (data: ArrayBuffer) {
     super()
-    this.messageType = this.readUInt16()
-    this.senderId = this.readUInt32()
-    this.length = this.readUInt16()
-    this.data = this.readBuffer(this.length)
+    this.data = new Uint8Array(data)
+    this.fields = {
+      messageType: this.readUInt16(),
+      senderId: this.readUInt32(),
+      length: this.readUInt16(),
+      data: this.readBytes(this.length)
+    }
+  }
+}
+
+export class OutgoingPacket extends SmartBuffer {
+  constructor (messageType: number, data: Uint8Array = new Uint8Array(0)) {
+    super()
+    if (data.length > MAX_DATA_LENGTH) {
+      throw RangeError(`Specified data of length ${data.length} exceeds max data length ${MAX_DATA_LENGTH}.`)
+    }
+
+    this.writeUInt16(messageType)
+    this.writeUInt16(data.length)
+    this.writeBytes(data)
   }
 }