I am writing a program that involves printing Raw Printer Command Language (PCL) files wrapped in Print Job Language (PJL) commands. I print it via a port 9100 socket connection to the printer using its IP address. I had it printing just fine the other day but these past few days when I have tested the program nothing prints. It doesn't even add a job to the print queue. Are there any reasons why printing via a socket connection would start failing like this? I didn't change any of the code related to printing and tested it with my socket print test file that also used to work and I got the same thing. I am getting no errors the data is sent out and the program proceeds. Any help or advice would be greatly appreciated. Code: with open(pcl_path, "rb") as file: # opens PCL file to read in data data = file.read() with socket.create_connection((printer_ip, PORT)) as sock: # sends raw binary print data over the connection sock.sendall(data) There is error handling to go with this and logging messages but I left them out for the sake of clarity. Continue reading...
