QUIC sniffer: handle multiple initial packets

[Fangliding]

见 #3363
按 #3363 (comment) 把操作搬了过来 就是一些cv工作加上少许修改 本地暂时还没法确定是否有效

[yuhan6665]

感谢 能否在 commit 加上原作者名字？

[Fangliding]

感谢 能否在 commit 加上原作者名字？

done

[yuhan6665]

刚才没注意 这个是不是可以用已有的不用新加？

[Fangliding]

还真是 我找了一圈没有才加的 想着如果重复编译器应该会报错吧 结果大小写不一样

[yuhan6665]

Thanks @Fangliding @Vigilans

[j2rong4cn]

我用的tproxy透明代理，发现无法嗅探quic，debug发现packetNumberLength=4，继续嗅探还是能的得到域名的

func TestSniffQUICForomTProxy(t *testing.T) {
	pkt, err := hex.DecodeString("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")
	common.Must(err)
	quicHdr, err := quic.SniffQUIC(pkt)
	if err != nil || quicHdr.Domain() != "www.google.com" {
		t.Error("failed")
	}
}