TCP/IP [Errno 99] Cannot assign requested address

Hi All,

Script Language - Python
Meter IP -24xx:yyy:xxxx:A::10 (Using SIM Card)
port -4059

I am using Gurux_dlms_client Example code in py.I run the script and able to communicate with device in local computer system . The same code i host AWS linux server, i unable to communicate device (TCP connection issue) ,and also i got error "[Errno 99] Cannot assign requested address ".

And cross verify the meter ip and port with TCP Client Sample code.I can able to send and receive the data . Ping and telnet the meter IP in AWS Linux server , the result is positive.

TCP Client Sample Code

import socket

def tcp_client():
# Server address and port
server_address = ('2401:xxxx:9yy7:zzz6::2', 4xyz)
# server_address = ('10.3.5.86', 8610)

# Create a TCP/IP socket
client_socket = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)

try:
# Connect to the server
client_socket.connect(server_address)
print(f"Connected to {server_address}")

# Send a message to the server
message = " 00 01 00 10 00 01 00 1F 60 1D A1 09 06 07 60 85 74 05 08 01 01 BE 10 04 0E 01 00 00 00 06 5F 1F 04 00 62 1E 5D FF FF"
client_socket.sendall(message.encode())
print(f"Sent: {message}")

# Receive the response from the server
data = client_socket.recv(1024)
print(f"Received: {data}")
print(f"Received: {data.decode()}")

except Exception as e:
print(f"Error: {e}")

finally:
# Close the socket
client_socket.close()
print("Socket closed")

if __name__ == "__main__":
tcp_client()

Kindly help me. I think GXnet library issue....