pass source_address in tcp client. (#1700)

Author: janiversen

pymodbus/client/tcp.py

@@ -47,6 +47,8 @@ def __init__(
         asyncio.Protocol.__init__(self)
         if "CommType" not in kwargs:
             kwargs["CommType"] = CommType.TCP
+        if source_address:
+            kwargs["source_address"] = source_address
         ModbusBaseClient.__init__(
             self,
             framer=framer,

pymodbus/transport/transport.py

@@ -37,7 +37,7 @@ class CommParams:
     timeout_connect: float = None
     host: str = "127.0.0.1"
     port: int = 0
-    source_address: tuple[str, int] = ("127.0.0.1", 0)
+    source_address: tuple[str, int] = ("0.0.0.0", 0)
     handle_local_echo: bool = False
 
     # tls