Started creating http api for netbrite

netbrite.py

@@ -10,6 +10,14 @@ import re
 DEFAULT_PORT = 700
 
 
+class NetbriteConnectionException(Exception):
+    pass
+
+
+class NetbriteTransferException(Exception):
+    pass
+
+
 class Colors(Enum):
     RED = 0x01
     GREEN = 0x02
@@ -101,7 +109,7 @@ class Message:
             (rb"\{right\}", b"\x10\x28"),
             (rb"\{pause\}", b"\x10\x05"),
             (rb"\{erase\}", b"\x10\x03"),
-            (rb"\{serial\}", b"\x10\x09"),
+            (rb"\{serialnum\}", b"\x10\x09"),
             (rb"\{bell\}", b"\x10\x05"),
             (rb"\{red\}", b"\x10\x0c" + pack("B", Colors.RED.value)),
             (rb"\{green\}", b"\x10\x0c" + pack("B", Colors.GREEN.value)),
@@ -183,16 +191,26 @@ class NetBrite:
 
         try:
             self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-            self.sock.settimeout(5000)
+            self.sock.settimeout(2)
             self.connect()
         except OSError as e:
-            raise ConnectionError(f"Error while opening network socket. {e}")
+            raise NetbriteConnectionException(
+                f"Error while opening network socket. {e}"
+            )
 
     def connect(self):
-        self.sock.connect((self.address, self.port))
+        try:
+            self.sock.connect((self.address, self.port))
+        except OSError as e:
+            raise NetbriteConnectionException(
+                f"Error while opening network socket. {e}"
+            )
 
     def tx(self, pkt: bytes):
-        _ = self.sock.send(pkt)
+        try:
+            _ = self.sock.send(pkt)
+        except OSError as e:
+            raise NetbriteTransferException(f"Error while opening network socket. {e}")
 
     def message(self, msg: Message, zoneName: str):
         z = self.zones_list.get(zoneName)