/// <summary>
/// 方法说明：通过SDK发送自定义消息接口：[支持4000-9999的自定义消息已读/收回执，仅仅是传输][完成自定义消息（MsCustomEntity）中的content内容]
/// 完成时间：2017-05-16
/// </summary>
/// <param name="sendReceipt">已读/收回执实体</param>
/// <param name="receiptType">已读/收类型</param>
/// <param name="customTopic">自定义消息主题</param>
/// <param name="errorMsg">提示信息</param>
/// <returns>是否成功发送消息</returns>
public bool SdkPublishCustomReceiptMsg(SdkMsSendMsgReceipt sendReceipt,
SdkReceiptType receiptType, string customTopic, ref string errorMsg)
{
var jsonStr = MsgConverter.GetJsonByMsgReceipt(sendReceipt, ref errorMsg);
var topic = receiptType == SdkReceiptType.ReadReceipt
? TopicSend.sdk_read.ToString()
: TopicSend.sdk_receive.ToString();
return(!string.IsNullOrEmpty(jsonStr) && Publish(topic, jsonStr, false, ref errorMsg));
}
