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セッションの概要

Conversation

When a user creates a one-to-one or group chat, a conversation will be created. In the Tencent Cloud IM SDK, the conversation class is ConvInfo. You can use the conversation management class APIs to display/update the conversation list, update the unread count, pin a conversation to the top, make a conversation draft, and mute message notifications.

Conversation Class

The conversation class is ConvInfo (Details), which defines the following content:
Attribute
Definition
Description
conv_type
Conversation type
See the definition of TIMConvType, which can be C2C or Group.
conv_id
Unique conversation ID
It is in the format of c2c_userID for a one-to-one chat or group_groupID for a group chat.
conv_active_time
Time when a conversation was activated

conv_is_has_lastmsg
Whether the conversation has the last message

conv_show_name
Displayed conversation name
The name of a group conversation is displayed in the following order of priority: group name > group ID;
The name of a one-to-one conversation is displayed in the following order of priority: friend remarks of the message receiver > nickname of the message receiver > userID of the message receiver.
conv_unread_num
Unread message count of the conversation
It is invalid and defaults to 0 for an audio-video group (AVChatRoom).
conv_recv_opt
Message receiving option
See the definition of TIMReceiveMessageOpt.
conv_last_msg
Last message in the conversation
For detailed directions, see ConvGetConvInfo(List, ValueCallback).
conv_group_at_info_array
List of @ information in the group conversation
Generally, it is used to display the notifications of "someone@me" and "@all".
conv_draft
Draft information
The draft information can be set by calling the ConvSetDraft API. For more information, see ConvSetDraft(String, TIMConvType, DraftParam).
conv_is_has_draft
Whether there is a conversation draft

conv_is_pinned
Whether to pin the conversation to the top
For detailed directions, see ConvPinConversation.

Conversation Storage Policy

There is no limit on the number of locally stored conversations. Up to 100 conversations can be stored in the cloud. To increase this limit, upgrade to the Ultimate edition. Then you can set the limit to 500 in the console.
Up to 100 conversations can be stored in the cloud. To increase this limit, upgrade to the Ultimate edition. Then you can set the limit to 500 in the console:



If the information of a conversation has not been updated for a long time, the conversation can be stored in the cloud for up to seven days. To extend the conversation storage period, contact us for application.
Locally stored conversations may not always be consistent with those stored in the cloud. If the user does not call the ConvDelete API to delete the local conversations, the conversations will always exist. However, up to 100 conversations can be stored in the cloud, and if the information of a conversation has not been updated for a long time, the conversation can be stored in the cloud for up to seven days. Therefore, local conversations displayed on different terminals may differ.