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OnNewChannelMessage sendMessage: RPCError: 400: CHANNEL_INVALID #1553

@tylerdandandan

Description

@tylerdandandan

What version of gotd are you using?

github.com/gotd/td v0.122.0

Can this issue be reproduced with the latest version?

Yes

What did you do?

telegram.ClientFromEnvironment()

...

dispatcher.OnNewChannelMessage(func(ctx context.Context, e tg.Entities, update *tg.UpdateNewChannelMessage) error {
	m, ok := update.Message.(*tg.Message)
	if !ok || m.Out {
		return nil
	}
	if m.PeerID == nil {
		return nil
	}

	peer, cast := m.PeerID.(*tg.PeerChannel)
	if !cast {
		return nil
	}

	channel := e.Channels[peer.ChannelID]

	if _, e := sender.To(channel.AsInputPeer()).Reply(m.ID).Text(ctx, "Test"); e != nil {
		fmt.Println(e.Error())
		return e
	}
	return nil

})

What did you expect to see?

I expect such a simple code to work in any chat

What did you see instead?

In some channels it works but in some I get sendMessage RPCError: 400: CHANNEL_INVALID. Looks like InputPeer is only valid if there is a tag or a reply to a message. The user has no restrictions when this error is observed.

What Go version and environment are you using?

go version go1.24.2 windows/amd64

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