diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/session/SsrcUtil.java b/src/main/java/com/genersoft/iot/vmp/gb28181/session/SsrcUtil.java
index d6b75f85..6a1401d2 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/session/SsrcUtil.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/session/SsrcUtil.java
@@ -5,7 +5,10 @@ import java.util.List;
 import java.util.Random;
 
 import com.genersoft.iot.vmp.conf.SipConfig;
+import com.genersoft.iot.vmp.gb28181.transmit.cmd.impl.SIPCommander;
 import com.genersoft.iot.vmp.utils.SpringBeanFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * @Description:SIP信令中的SSRC工具类。SSRC值由10位十进制整数组成的字符串，第一位为0代表实况，为1则代表回放；第二位至第六位由监控域ID的第4位到第8位组成；最后4位为不重复的4个整数
@@ -14,6 +17,8 @@ import com.genersoft.iot.vmp.utils.SpringBeanFactory;
  */
 public class SsrcUtil {
 
+	private final static Logger logger = LoggerFactory.getLogger(SsrcUtil.class);
+
 	private static String ssrcPrefix;
 
 	private static List<String> isUsed;
@@ -59,6 +64,10 @@ public class SsrcUtil {
 	 * 
 	 */
 	public static void releaseSsrc(String ssrc) {
+		if (ssrc == null) {
+			logger.error("要释放ssrc为null");
+			return;
+		}
 		String sn = ssrc.substring(6);
 		isUsed.remove(sn);
 		notUsed.add(sn);
diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java b/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java
index b6c0dfc4..5ea57c15 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/session/VideoStreamSessionManager.java
@@ -42,7 +42,9 @@ public class VideoStreamSessionManager {
 	
 	public void remove(String deviceId, String channelId) {
 		sessionMap.remove(deviceId + "_" + channelId);
-		SsrcUtil.releaseSsrc(ssrcMap.get(deviceId + "_" + channelId));
+		if (ssrcMap.get(deviceId + "_" + channelId) != null) {
+			SsrcUtil.releaseSsrc(ssrcMap.get(deviceId + "_" + channelId));
+		}
 		ssrcMap.remove(deviceId + "_" + channelId);
 		streamIdMap.remove(deviceId + "_" + channelId);
 	}
diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java
index 44bfc549..cecbe3c0 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderProvider.java
@@ -69,8 +69,7 @@ public class SIPRequestHeaderProvider {
 		SipURI requestLine = sipFactory.createAddressFactory().createSipURI(channelId, device.getHostAddress());
 		//via
 		ArrayList<ViaHeader> viaHeaders = new ArrayList<ViaHeader>();
-		ViaHeader viaHeader = sipFactory.createHeaderFactory().createViaHeader(device.getIp(), device.getPort(), device.getTransport(), viaTag);
-//		ViaHeader viaHeader = sipFactory.createHeaderFactory().createViaHeader(sipConfig.getSipIp(), sipConfig.getSipPort(), device.getTransport(), viaTag);
+		ViaHeader viaHeader = sipFactory.createHeaderFactory().createViaHeader(sipConfig.getSipIp(), sipConfig.getSipPort(), device.getTransport(), viaTag);
 		viaHeader.setRPort();
 		viaHeaders.add(viaHeader);
 
diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
index 5f31d87b..529feaf0 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
@@ -21,6 +21,7 @@ import com.genersoft.iot.vmp.media.zlm.ZLMRESTfulUtils;
 import com.genersoft.iot.vmp.media.zlm.ZLMRTPServerFactory;
 import com.genersoft.iot.vmp.storager.IRedisCatchStorage;
 import com.genersoft.iot.vmp.storager.IVideoManagerStorager;
+import gov.nist.javax.sip.message.SIPRequest;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -625,15 +626,9 @@ public class SIPCommander implements ISIPCommander {
 			}
 			Request byeRequest = dialog.createRequest(Request.BYE);
 			SipURI byeURI = (SipURI) byeRequest.getRequestURI();
-			String vh = transaction.getRequest().getHeader(ViaHeader.NAME).toString();
-			Pattern p = Pattern.compile("(\\d+\\.\\d+\\.\\d+\\.\\d+)\\:(\\d+)");
-			Matcher matcher = p.matcher(vh);
-			if (matcher.find()) {
-				String ip = matcher.group(1);
-				byeURI.setHost(ip);
-				String port = matcher.group(2);
-				byeURI.setPort(Integer.parseInt(port));
-			}
+			SIPRequest request = (SIPRequest)transaction.getRequest();
+			byeURI.setHost(request.getRemoteAddress().getHostName());
+			byeURI.setPort(request.getRemotePort());
 			ViaHeader viaHeader = (ViaHeader) byeRequest.getHeader(ViaHeader.NAME);
 			String protocol = viaHeader.getTransport().toUpperCase();
 			ClientTransaction clientTransaction = null;
diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/response/impl/InviteResponseProcessor.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/response/impl/InviteResponseProcessor.java
index 83500aa3..0e238b04 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/response/impl/InviteResponseProcessor.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/response/impl/InviteResponseProcessor.java
@@ -2,16 +2,13 @@ package com.genersoft.iot.vmp.gb28181.transmit.response.impl;
 
 import java.text.ParseException;
 
-import javax.sip.Dialog;
-import javax.sip.InvalidArgumentException;
-import javax.sip.ResponseEvent;
-import javax.sip.SipException;
+import javax.sip.*;
 import javax.sip.address.SipURI;
 import javax.sip.header.CSeqHeader;
-import javax.sip.header.ViaHeader;
 import javax.sip.message.Request;
 import javax.sip.message.Response;
 
+import gov.nist.javax.sip.ResponseEventExt;
 import org.springframework.stereotype.Component;
 
 import com.genersoft.iot.vmp.conf.SipConfig;
@@ -46,16 +43,15 @@ public class InviteResponseProcessor implements ISIPResponseProcessor {
 			// 成功响应
 			// 下发ack
 			if (statusCode == Response.OK) {
+				ResponseEventExt event = (ResponseEventExt)evt;
 				Dialog dialog = evt.getDialog();
 				CSeqHeader cseq = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
 				Request reqAck = dialog.createAck(cseq.getSeqNumber());
-
 				SipURI requestURI = (SipURI) reqAck.getRequestURI();
-				ViaHeader viaHeader = (ViaHeader) response.getHeader(ViaHeader.NAME);
-				requestURI.setHost(viaHeader.getHost());
-				requestURI.setPort(viaHeader.getPort());
+				requestURI.setHost(event.getRemoteIpAddress());
+				requestURI.setPort(event.getRemotePort());
 				reqAck.setRequestURI(requestURI);
-
+				System.out.println("向 " + event.getRemoteIpAddress() + ":" + event.getRemotePort() + "回复ack");
 				dialog.sendAck(reqAck);
 			}
 		} catch (InvalidArgumentException | SipException e) {
diff --git a/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java b/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java
index cf1ce4cd..14719cc4 100644
--- a/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java
+++ b/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java
@@ -251,7 +251,7 @@ public class ZLMHttpHookListener {
 		JSONArray tracks = json.getJSONArray("tracks");
 		boolean regist = json.getBoolean("regist");
 		if (tracks != null) {
-			System.out.println("222222" + schema);
+			System.out.println("on_stream_changed->>" + schema);
 		}
 		if ("rtmp".equals(schema)){