send a json message to a udp server in ruby

To send a JSON message to a UDP server in Ruby, you can use the socket module. Here's an example:

main.rb
require 'socket'
require 'json'

# UDP server address
udp_server_ip = '127.0.0.1'
udp_server_port = 1234

# JSON message to send
message = { name: 'Alice', age: 30 }.to_json

# Create a UDP socket
socket = UDPSocket.new

# Send the message to the UDP server
socket.send(message, 0, udp_server_ip, udp_server_port)

# Close the socket
socket.close
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In this example, we first require the socket and json modules. We then define the IP address and port number of the UDP server we want to send the message to.

Next, we create a JSON message using the to_json method. We then create a new UDP socket using the UDPSocket.new method.

We use the send method on the socket object to send the JSON message to the UDP server. The send method takes four arguments: the message to send, the flag (0 in our example), the IP address of the UDP server, and its port number.

Finally, we close the socket using the close method.