修改配置，增加如下功能

1，添加黑名单处理策略，发送失败或者忽略掉对方。
2，添加好友再次请求的时间间隔配置和好友请求被拒绝后再次请求的时间间隔配置

broker/src/main/java/io/moquette/imhandler/SendMessageHandler.java

@@ -26,6 +26,7 @@ import static cn.wildfirechat.proto.ProtoConstants.ContentType.Text;
 public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
     private int mSensitiveType = 0;  //命中敏感词时，0 失败，1 吞掉， 2 敏感词替换成*。
     private String mForwardUrl = null;
+    private int mBlacklistStrategy = 0; //黑名单中时，0失败，1吞掉。
     public SendMessageHandler() {
         super();
 
@@ -40,12 +41,18 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
             e.printStackTrace();
         }
 
+        try {
+            mBlacklistStrategy = Integer.parseInt(Server.getConfig().getProperty(BrokerConstants.MESSAGE_Blacklist_Strategy));
+        } catch (NumberFormatException e) {
+            e.printStackTrace();
+        }
     }
 
     @Override
     public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, boolean isAdmin, WFCMessage.Message message, Qos1PublishHandler.IMCallback callback) {
         ErrorCode errorCode = ErrorCode.ERROR_CODE_SUCCESS;
         if (message != null) {
+            boolean ignoreMsg = false;
             if (!isAdmin) {  //admin do not check the right
                 // 不能在端上直接发送撤回和群通知
                 if (message.getContent().getType() == 80 || (message.getContent().getType() >= 100 && message.getContent().getType() < 200)) {
@@ -59,7 +66,11 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
                 if (message.getConversation().getType() == ProtoConstants.ConversationType.ConversationType_Private) {
                     errorCode = m_messagesStore.isAllowUserMessage(message.getConversation().getTarget(), fromUser);
                     if (errorCode != ErrorCode.ERROR_CODE_SUCCESS) {
-                        return errorCode;
+                        if (errorCode == ErrorCode.ERROR_CODE_IN_BLACK_LIST && mBlacklistStrategy != ProtoConstants.BlacklistStrategy.Message_Reject) {
+                            ignoreMsg = true;
+                        } else {
+                            return errorCode;
+                        }
                     }
 
                     userStatus = m_messagesStore.getUserStatus(message.getConversation().getTarget());
@@ -92,7 +103,7 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
                 publisher.forwardMessage(message, mForwardUrl);
             }
 
-            boolean ignoreMsg = false;
+
             if (!isAdmin && message.getContent().getType() == Text) {
                 Set<String> matched = m_messagesStore.handleSensitiveWord(message.getContent().getSearchableContent());
                 if (matched != null && !matched.isEmpty()) {
@@ -115,9 +126,7 @@ public class SendMessageHandler extends IMHandler<WFCMessage.Message> {
             }
 
             if (errorCode == ErrorCode.ERROR_CODE_SUCCESS) {
-                if (!ignoreMsg) {
-                    saveAndPublish(fromUser, clientID, message);
-                }
+                saveAndPublish(fromUser, clientID, message, ignoreMsg);
                 ackPayload = ackPayload.capacity(20);
                 ackPayload.writeLong(messageId);
                 ackPayload.writeLong(timestamp);