sendall.go

package main

import (
    "net"
    "os"
    "time"
)

func main() {
    var buf [0x100000]byte
    var sent_so_far int

    if len(os.Args) < 2 {
        println("Specify IP or hostname of the remote post")
        return
    }

    ip := os.Args[1] + ":11111"

    println("connecting to", ip, "...")

    con, e := net.DialTimeout("tcp4", ip, 10*time.Second)
    if e != nil {
        println(e.Error())
        return
    }
    println("ok. now sending", len(buf), "bytes...")

    var to_cnt int
    for sent_so_far < len(buf) {
        bts2s := len(buf) - sent_so_far
        if bts2s > 4096 {
            bts2s = 4096
        }
        con.SetWriteDeadline(time.Now().Add(1 * time.Millisecond))
        n, e := con.Write(buf[sent_so_far : sent_so_far+bts2s])
        if e != nil {
            if nerr, ok := e.(net.Error); ok && nerr.Timeout() {
                to_cnt++
                e = nil
                if n != 0 {
                    println("n:", n)
                }
            } else {
                println(e.Error())
                return
            }
        }
        sent_so_far += n
    }
    println("closing socket...", to_cnt)
    con.Close()
    println(sent_so_far, "bytes sent. please check the file size at the other end")
    time.Sleep(1e9)
}