connection refused

Could you please help with the below issue. I am not able to connect.
Thanks

wsd -url=ws://localhost:1337/ws
connecting to ws://localhost:1337/ws from http://localhost/...
panic: websocket.Dial ws://localhost:1337/ws: dial tcp [::1]:1337: getsockopt: connection refused
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x4c29b1]

goroutine 1 [running]:
panic(0x73df40, 0xc82000e100)
/usr/lib/golang/src/runtime/panic.go:481 +0x3e6
golang.org/x/net/websocket.(*Conn).Close(0x0, 0x0, 0x0)
/home/Host1/app/src/golang.org/x/net/websocket/websocket.go:236 +0xd1
panic(0x725260, 0xc8200aeb00)
/usr/lib/golang/src/runtime/panic.go:443 +0x4e9
main.main()
/home/Host1/app/src/github.com/alexanderGugel/wsd/main.go:126 +0x8c7