GO programming, blocking read function on a reader event - go

Question

I am a beginner in Go programming and I am confused about a problem about bufio readers.
I'm programming a kind of chat client who must display and send our messages in live time. But messages that I receive are not displayed until I press enter in my terminal.
After few tests, it seems to be my "inputListener()" function being the problem because, if I put it after reading messages from server, messages from server are displaying first.
I supposed that the Read function may blocked my loop until it get a '\n' or something like that.
Here is my code:
package main
import "os"
import "strconv"
import "net"
import "bufio"
/*Recovery our input message into a buffer*/
func inputListener()([] byte){
buf := make([]byte, 512)
readerInput := bufio.NewReader(os.Stdin)
_, err := readerInput.Read(buf)
if err != nil{
panic("Error reading input.")
os.Exit(0)
}
return buf
}
func main(){
if len(os.Args) != 3{
println("Usage: ",os.Args[0], " <host> <port>\n")
os.Exit(0)
}
//Recovery the port.
port, err := strconv.Atoi(os.Args[2])
if err != nil{
panic("Error during the port recovery\n")
os.Exit(0)
}
println(port)
/*Join the adresse*/
addr := os.Args[1] + ":" + strconv.Itoa(port)
println(addr)
/* sources -- https://golang.org/pkg/net/ */
conn, err := net.Dial("tcp", addr)
if err != nil{
panic("Error connecting " + addr)
os.Exit(0)
}
buf := make([]byte, 512)
t := make([]byte, 512)
for {
/*Receive data from server*/
size, err := conn.Read(buf)
if err != nil {
panic("Error reading output.")
os.Exit(0)
}
if size >= 0{
print(string(buf[0:size]))
}
/*Data we need to send*/
t = inputListener()
if len(t) >= 0{
conn.Write(t)
}
}
conn.Close()
}
I need to press enter per messages received :/
Thank you in advance for your answers !

Answer 1

You be try something like this:
package main
import (
"bufio"
"io"
"net"
"os"
"strconv"
)
/*Recovery our input message into a buffer*/
func inputListener() []byte {
buf := make([]byte, 512)
readerInput := bufio.NewReader(os.Stdin)
_, err := readerInput.Read(buf)
if err != nil {
panic("Error reading input.")
}
return buf
}
func main() {
if len(os.Args) != 3 {
println("Usage: ", os.Args[0], " <host> <port>\n")
os.Exit(0)
}
//Recovery the port.
port, err := strconv.Atoi(os.Args[2])
if err != nil {
panic("Error during the port recovery\n")
}
println(port)
/*Join the adresse*/
addr := os.Args[1] + ":" + strconv.Itoa(port)
println(addr)
/* sources -- https://golang.org/pkg/net/ */
conn, err := net.Dial("tcp", addr)
if err != nil {
panic("Error connecting " + addr)
}
defer conn.Close()
go io.Copy(os.Stdout, conn)
r := bufio.NewReader(os.Stdin)
for {
p, err := r.ReadSlice('\n')
if err != nil {
panic("Error reading output.")
}
conn.Write(p)
}
}