From dea44dcd78418ed3e7f191a73cee2b81a7a0019f Mon Sep 17 00:00:00 2001
From: 648540858 <648540858@qq.com>
Date: 星期五, 13 一月 2023 16:21:17 +0800
Subject: [PATCH] Merge branch 'wvp-28181-2.0'

---
 src/main/java/com/genersoft/iot/vmp/gb28181/utils/SipUtils.java |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 49 insertions(+), 0 deletions(-)

diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/utils/SipUtils.java b/src/main/java/com/genersoft/iot/vmp/gb28181/utils/SipUtils.java
index 26c8e4e..45c5a90 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/utils/SipUtils.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/utils/SipUtils.java
@@ -1,9 +1,11 @@
 package com.genersoft.iot.vmp.gb28181.utils;
 
+import com.genersoft.iot.vmp.gb28181.bean.RemoteAddressInfo;
 import com.genersoft.iot.vmp.utils.GitUtil;
 import gov.nist.javax.sip.address.AddressImpl;
 import gov.nist.javax.sip.address.SipUri;
 import gov.nist.javax.sip.header.Subject;
+import gov.nist.javax.sip.message.SIPRequest;
 import org.springframework.util.ObjectUtils;
 
 import javax.sip.PeerUnavailableException;
@@ -119,4 +121,51 @@
         return builder.toString();
     }
 
+    public static String getNewCallId() {
+        return (int) Math.floor(Math.random() * 10000) + "";
+    }
+
+    public static int getTypeCodeFromGbCode(String deviceId) {
+        if (ObjectUtils.isEmpty(deviceId)) {
+            return 0;
+        }
+        return Integer.parseInt(deviceId.substring(10, 13));
+    }
+
+    /**
+     * 鍒ゆ柇鏄惁鏄墠绔鍥磋澶�
+     * @param deviceId
+     * @return
+     */
+    public static boolean isFrontEnd(String deviceId) {
+        int typeCodeFromGbCode = getTypeCodeFromGbCode(deviceId);
+        return typeCodeFromGbCode > 130 && typeCodeFromGbCode < 199;
+    }
+    /**
+     * 浠庤姹備腑鑾峰彇璁惧ip鍦板潃鍜岀鍙e彿
+     * @param request 璇锋眰
+     * @param sipUseSourceIpAsRemoteAddress  false 浠巚ia涓幏鍙栧湴鍧�锛� true 鐩存帴鑾峰彇杩滅▼鍦板潃
+     * @return 鍦板潃淇℃伅
+     */
+    public static RemoteAddressInfo getRemoteAddressFromRequest(SIPRequest request, boolean sipUseSourceIpAsRemoteAddress) {
+
+        String remoteAddress;
+        int remotePort;
+        if (sipUseSourceIpAsRemoteAddress) {
+            remoteAddress = request.getRemoteAddress().getHostAddress();
+            remotePort = request.getRemotePort();
+        }else {
+            // 鍒ゆ柇RPort鏄惁鏀瑰彉锛屾敼鍙樺垯璇存槑璺敱nat淇℃伅鍙樺寲锛屼慨鏀硅澶囦俊鎭�
+            // 鑾峰彇鍒伴�氫俊鍦板潃绛変俊鎭�
+            remoteAddress = request.getTopmostViaHeader().getReceived();
+            remotePort = request.getTopmostViaHeader().getRPort();
+            // 瑙f瀽鏈湴鍦板潃鏇夸唬
+            if (ObjectUtils.isEmpty(remoteAddress) || remotePort == -1) {
+                remoteAddress = request.getTopmostViaHeader().getHost();
+                remotePort = request.getTopmostViaHeader().getPort();
+            }
+        }
+
+        return new RemoteAddressInfo(remoteAddress, remotePort);
+    }
 }

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