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https://github.com/nspcc-dev/neo-go.git
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d7f747fa9a
Otherwise the node might crash in `startProtocol` because of missing Version field in the peer. And it also keeps the sequence correct, Version MUST be sent first and ACKs can only follow it.
85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
package network
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import (
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"net"
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"testing"
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"github.com/CityOfZion/neo-go/pkg/network/payload"
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"github.com/stretchr/testify/require"
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)
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func connReadStub(conn net.Conn) {
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b := make([]byte, 1024)
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var err error
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for ; err == nil; _, err = conn.Read(b) {
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}
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}
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func TestPeerHandshake(t *testing.T) {
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server, client := net.Pipe()
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tcpS := NewTCPPeer(server)
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tcpC := NewTCPPeer(client)
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// Something should read things written into the pipe.
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go connReadStub(tcpS.conn)
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go connReadStub(tcpC.conn)
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// No handshake yet.
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require.Equal(t, false, tcpS.Handshaked())
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require.Equal(t, false, tcpC.Handshaked())
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// No ordinary messages can be written.
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require.Error(t, tcpS.WriteMsg(&Message{}))
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require.Error(t, tcpC.WriteMsg(&Message{}))
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// Try to mess with VersionAck on both client and server, it should fail.
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require.Error(t, tcpS.SendVersionAck(&Message{}))
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require.Error(t, tcpS.HandleVersionAck())
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require.Error(t, tcpC.SendVersionAck(&Message{}))
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require.Error(t, tcpC.HandleVersionAck())
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// No handshake yet.
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require.Equal(t, false, tcpS.Handshaked())
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require.Equal(t, false, tcpC.Handshaked())
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// Now send and handle versions, but in a different order on client and
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// server.
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require.NoError(t, tcpC.SendVersion(&Message{}))
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require.Error(t, tcpC.HandleVersionAck()) // Didn't receive version yet.
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require.NoError(t, tcpS.HandleVersion(&payload.Version{}))
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require.Error(t, tcpS.SendVersionAck(&Message{})) // Didn't send version yet.
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require.NoError(t, tcpC.HandleVersion(&payload.Version{}))
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require.NoError(t, tcpS.SendVersion(&Message{}))
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// No handshake yet.
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require.Equal(t, false, tcpS.Handshaked())
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require.Equal(t, false, tcpC.Handshaked())
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// These are sent/received and should fail now.
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require.Error(t, tcpC.SendVersion(&Message{}))
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require.Error(t, tcpS.HandleVersion(&payload.Version{}))
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require.Error(t, tcpC.HandleVersion(&payload.Version{}))
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require.Error(t, tcpS.SendVersion(&Message{}))
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// Now send and handle ACK, again in a different order on client and
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// server.
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require.NoError(t, tcpC.SendVersionAck(&Message{}))
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require.NoError(t, tcpS.HandleVersionAck())
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require.NoError(t, tcpC.HandleVersionAck())
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require.NoError(t, tcpS.SendVersionAck(&Message{}))
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// Handshaked now.
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require.Equal(t, true, tcpS.Handshaked())
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require.Equal(t, true, tcpC.Handshaked())
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// Subsequent ACKing should fail.
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require.Error(t, tcpC.SendVersionAck(&Message{}))
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require.Error(t, tcpS.HandleVersionAck())
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require.Error(t, tcpC.HandleVersionAck())
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require.Error(t, tcpS.SendVersionAck(&Message{}))
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// Now regular messaging can proceed.
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require.NoError(t, tcpS.WriteMsg(&Message{}))
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require.NoError(t, tcpC.WriteMsg(&Message{}))
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}
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