tencent cloud

var message = new Message
{
  message_conv_id = conv_id,
  message_conv_type = TIMConvType.kTIMConv_Group,
  message_cloud_custom_str = "unity local custom data",
  message_elem_array = new List<Elem>{new Elem
  {
    elem_type = TIMElemType.kTIMElem_Text,
    text_elem_content = Input.text
  }},
  message_need_read_receipt = true,
};
StringBuilder messageId = new StringBuilder(128);
  TIMResult res = TencentIMSDK.MsgSendMessage(conv_id, TIMConvType.kTIMConv_C2C, message, messageId, (int code, string desc, Message data, string user_data) => {
  // Process the callback logic
});

TIMResult res = TencentIMSDK.MsgSendMessageReadReceipts(msg_array, (int code, string desc, string user_data) => {
  // Process the callback logic
});

TIMResult res = TencentIMSDK.SetMsgReadedReceiptCallback(msg_array, (List<MessageReceipt> message_receipt, string user_data) => {
  // Process the callback logic
});

TIMResult res = TencentIMSDK.MsgGetMessageReadReceipts(msg_array, (int code, string desc, List<MessageReceipt> message_receipt, string user_data) => {
  // Process the callback logic
});

TIMResult res = TencentIMSDK.MsgGetMessageReadReceipts(message, TIMGroupMessageReadMembersFilter.TIM_GROUP_MESSAGE_READ_MEMBERS_FILTER_READ, next_seq, 20, (List<GroupMemberInfo> json_group_member_array, ulong next_seq, bool is_finished, string user_data) => {
  // Process the callback logic
});