send a message to a udp server in go

To send a message to a UDP server in Go, you need to follow the following steps:

Import the necessary packages
Resolve the address of the server
Create a UDP connection
Create a message to send
Send the message

Here's the code that does this:


main.go
package main

import (
    "fmt"
    "net"
)

func main() {
    serverAddr, err := net.ResolveUDPAddr("udp", "localhost:12345")
    if err != nil {
        fmt.Printf("Error resolving UDP address: %v\n", err)
        return
    }

    conn, err := net.DialUDP("udp", nil, serverAddr)
    if err != nil {
        fmt.Printf("Error creating UDP connection: %v\n", err)
        return
    }
    defer conn.Close()

    message := []byte("Hello, server!")
    _, err = conn.Write(message)
    if err != nil {
        fmt.Printf("Error sending message to server: %v\n", err)
        return
    }

    fmt.Println("Message sent to server")
}
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In this example, we're sending the message "Hello, server!" to a local UDP server listening on port 12345. First, we resolve the address of the server using net.ResolveUDPAddr(). Then we create a UDP connection using net.DialUDP(). We write the message to the UDP connection using conn.Write(). Finally, we close the connection using conn.Close().

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