Move os check into __init__

Author: faisal-shah

can/interfaces/socketcand/socketcand.py

@@ -79,10 +79,17 @@ class SocketCanDaemonBus(can.BusABC):
     def __init__(self, channel, host, port, tcp_tune=False, can_filters=None, **kwargs):
         self.__host = host
         self.__port = port
+
         self.__tcp_tune = tcp_tune
         self.__socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+
         if self.__tcp_tune:
-            self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+            if os.name == "nt":
+                self.__tcp_tune = False
+                log.warning("'tcp_tune' not available in Windows. Setting to False")
+            else:
+                self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+
         self.__message_buffer = deque()
         self.__receive_buffer = ""  # i know string is not the most efficient here
         self.channel = channel
@@ -124,9 +131,8 @@ def _recv_internal(self, timeout):
             ascii_msg = self.__socket.recv(1024).decode(
                 "ascii"
             )  # may contain multiple messages
-            if os.name != "nt":
-                if self.__tcp_tune:
-                    self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_QUICKACK, 1)
+            if self.__tcp_tune:
+                self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_QUICKACK, 1)
             self.__receive_buffer += ascii_msg
             log.debug(f"Received Ascii Message: {ascii_msg}")
             buffer_view = self.__receive_buffer
@@ -180,15 +186,13 @@ def _recv_internal(self, timeout):
     def _tcp_send(self, msg: str):
         log.debug(f"Sending TCP Message: '{msg}'")
         self.__socket.sendall(msg.encode("ascii"))
-        if os.name != "nt":
-            if self.__tcp_tune:
-                self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_QUICKACK, 1)
+        if self.__tcp_tune:
+            self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_QUICKACK, 1)
 
     def _expect_msg(self, msg):
         ascii_msg = self.__socket.recv(256).decode("ascii")
-        if os.name != "nt":
-            if self.__tcp_tune:
-                self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_QUICKACK, 1)
+        if self.__tcp_tune:
+            self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_QUICKACK, 1)
         if not ascii_msg == msg:
             raise can.CanError(f"{msg} message expected!")