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net: UDPConn.LocalAddr() of ListenUDP returns "" instead of "" or "" #26346

woniuxu opened this issue Jul 12, 2018 · 0 comments


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@woniuxu woniuxu commented Jul 12, 2018

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.9.2 linux/amd64

What did you do?

Server side:

ServerAddr,err := net.ResolveUDPAddr("udp",":11110")
ServerConn, err := net.ListenUDP("udp", ServerAddr)
n,addr,err := ServerConn.ReadFromUDP(buf)
fmt.Println("Received ",string(buf[0:n]), " from ",addr, " to ", ServerConn.LocalAddr())

Client side:

ServerAddr1,err := net.ResolveUDPAddr("udp", "")
Conn1, err := net.DialUDP("udp", nil, ServerAddr1)
_,err := Conn1.Write(buf)

ServerAddr2,err := net.ResolveUDPAddr("udp", "")
Conn2, err := net.DialUDP("udp", nil, ServerAddr2)
_,err := Conn1.Write(buf)

What did you expect to see?

Received  1  from  to
Received  1  from  to

What did you see instead?

Received  1  from  to
Received  1  from  to

So what shoud i do to get the "expect" result? Thanks.

@woniuxu woniuxu closed this Jul 12, 2018
@mikioh mikioh changed the title net:UDPConn.LocalAddr() of ListenUDP returns "" instead of "" or "" net: UDPConn.LocalAddr() of ListenUDP returns "" instead of "" or "" Feb 26, 2019
@golang golang locked and limited conversation to collaborators Feb 26, 2020
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