Unable to send group messages. I get "failed to get device list: unknown user server 'lid'" error

[nurtai325]

I have a server that sends events as messages to a whatsapp group. For several months it worked good but today i get errors when sending a message to group.
My code snippet is here:
func SendMessage(ctx context.Context, from, to, text string, isGroup bool) error { jid := types.NewJID(to, types.DefaultUserServer) if isGroup { conf, err := config.New() if err != nil { return err } jid, err = types.ParseJID(conf.TABYS_GROUP_ID) if err != nil { return err } jid.Server = types.GroupServer } _, err := defaultClient.SendMessage(ctx, jid, &waE2E.Message{ Conversation: &text, }) if err != nil { return err } return nil }
the conf.TABYS_GROUP_ID is a jid similar to [email protected]. I searched internet but couldn't find the answer. So i looked at the source code. Apparently "failed to get device list" error comes from *Client.prepareMessageNode function when it calls *Client.GetUserDevicesContext function. It then calls *Client.usync function after selecting jidsToSync. Then inside it the following code:
switch jid.Server { case types.LegacyUserServer: userList[i].Content = []waBinary.Node{{ Tag: "contact", Content: jid.String(), }} case types.DefaultUserServer: userList[i].Attrs = waBinary.Attrs{"jid": jid} if jid.IsBot() { var personaId string for _, bot := range extras.BotListInfo { if bot.BotJID.User == jid.User { personaId = bot.PersonaID } } userList[i].Content = []waBinary.Node{{ Tag: "bot", Content: []waBinary.Node{{ Tag: "profile", Attrs: waBinary.Attrs{"persona_id": personaId}, }}, }} } default: fmt.Println("hello") return nil, fmt.Errorf("unknown user server '%s'", jid.Server) }
returns an error if jid doesn't have a user server. I think usync is for syncing users and somehow my group jid is trying to be synced. Could you please help with it I couldn't really properly understand the code?

[nurtai325]

I looked further and error is due to group members jid's are in 'lid' server. It first fetches group member jid's. Then syncs them with usync function. There it rejects the jid's because their servers are lid(Hidden User server).

[nurtai325]

I fixed it but in a very poor way. When getting group members it first fetches overall group info. Then it is parsed into types.GroupInfo. I noticed that there is a field not included in parsing. phone_number. It contains the actual jid of the user. So i changed the line 579 in group.go to be JID: childAG.JID("phone_number"),
instead of JID: childAG.JID("jid"), in my fork. Please share if you have alternative better solutions. I think that mine is just a temporary workaround as my experience in programming isn't huge.