wrenner/socket_example.wren at b4884196e1b11f3dd8a7f0fcf872de138187bf97

 // socket_example.wren (Corrected)
 import "socket" for Socket
 System.print("--- Wren Socket Echo Server and Client ---")
 var serverFiber = Fiber.new {
     var server = Socket.new()
     if (server.listen("localhost", 8080, 5)) {
         System.print("Server listening on localhost:8080")
         while (server.isOpen) {
             server.accept { |err, client|
                 if (err) {
                     System.print("Accept error: %(err)")
                     return
                 }
                 System.print("Client connected!")
                 Fiber.new {
                     while (client.isOpen) {
                         client.read(4096) { |readErr, data|
                             if (readErr) {
                                 System.print("Client disconnected.")
                                 client.close()
                                 return
                             }
                             System.print("Received: %(data)")
                             // CORRECTED: Replaced '_' with 'result'
                             client.write("Echo: %(data)") { |writeErr, result|
                                 if (writeErr) System.print("Write error: %(writeErr)")
                             }
                         }
                     }
                 }.call()
             }
         }
     } else {
         System.print("Failed to start server.")
     }
 }
 var clientFiber = Fiber.new {
     var client = Socket.new()
     // CORRECTED: Replaced '_' with 'result'
     client.connect("localhost", 8080) { |err, result|
         if (err) {
             System.print("Client connection error: %(err)")
             return
         }
         System.print("Client connected to server.")
         // CORRECTED: Replaced '_' with 'result'
         client.write("Hello from Wren!") { |writeErr, result|
             if (writeErr) {
                 System.print("Client write error: %(writeErr)")
                 return
             }
             client.read(1024) { |readErr, data|
                 if (readErr) {
                     System.print("Client read error: %(readErr)")
                 } else {
                     System.print("Client received: %(data)")
                 }
                 client.close()
             }
         }
     }
 }
 // Start the server
 serverFiber.call()
 // Give the server a moment to start up before connecting the client
 Fiber.sleep(100)
 // Start the client
 clientFiber.call()
 // Let the operations complete
 Fiber.sleep(1000)