Unable to get the Response message after calling Send method #100
Description
"I'm writing the client code. The server successfully receives the request and sends the response, but the client isn't able to read the response—it times out. However, when I test with raw TCP code instead of using the IsoConnection, the response is received correctly.
t.Run("sends messages to server and receives responses", func(t *testing.T) {
c, err := connection.New("13.126.17.109:8970", connection.Spec, readMessageLength, writeMessageLength)
require.NoError(t, err)
err = c.Connect()
require.NoError(t, err)
// network management message
message := iso8583.NewMessage(connection.Spec)
err = message.Marshal(connection.NewNetworkManagementRequest())
require.NoError(t, err)
// we can send iso message to the server
response, err := c.Send(message)
require.NoError(t, err)
time.Sleep(1 * time.Second)
mti, err := response.GetMTI()
t.Log(mti)
require.NoError(t, err)
require.Equal(t, "0810", mti)
require.NoError(t, c.Close())
})
func readMessageLength(r io.Reader) (int, error) {
header := network.NewBinary2BytesHeader()
n, err := header.ReadFrom(r)
if err != nil {
return n, err
}
return header.Length(), nil
}
func writeMessageLength(w io.Writer, length int) (int, error) {
header := network.NewBinary2BytesHeader()
header.SetLength(length)
n, err := header.WriteTo(w)
if err != nil {
return n, fmt.Errorf("writing message header: %w", err)
}
return n, nil
}