Retrieve Nx server currently used IP address and port

Answered

Permanently deleted user

November 23, 2020 11:07

If it is possible to get the currently used IP address and port of Nx server as following via metadata SDK, HTTP REST API, or other ways? Thank you.

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• 

  Andrey Terentyev

  • Network Optix team

  November 23, 2020 15:31

  Hello Tiffany,

  You can use the /ec2/getMediaServersEx HTTP API function.
  For example,

  http://localhost:7001/ec2/getMediaServersEx

  The default port number is TCP 7001.

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• 

  Permanently deleted user

  November 24, 2020 02:06 Edited

  Hi Andrey,

  Thanks for your help.

  Here is another question about the provided solution for our scenario:

  We want to show the customer's Nx server IP address and port number on our plugin UI, under the premise that we cannot sure if our customer had changed the default port number.

  In this case, if we need to know the port number first then use the /ec2/getMediaServersEx HTTP API? Thanks.

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• 

  Andrey Terentyev

  • Network Optix team

  November 24, 2020 13:27

  Hi Tiffany,

  The port number can be set by the "port" setting:

  • In Linux in the  /opt/networkoptix/mediaserver/etc/mediaserver.conf file
  • In Windows in the HKEY_LOCAL_MACHINE\SOFTWARE\Network Optix\Network Optix Media Server registry key

  You can read the "port" setting value from the places specified.

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• 

  Permanently deleted user

  November 25, 2020 10:44

  Hi Andrey,

  Here is another issue of retrieving IP address via /ec2/getMediaServersEx, that is, we need to know the customer's VMS  server account and password first.

  If there are other possible ways to get the IP address of customer's VMS server to show this information on the plugin UI.

  Thank you.

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• 

  Andrey Terentyev

  • Network Optix team

  November 25, 2020 13:14

  Hi,

  > we need to know the customer's VMS server account and password first.

  Yes, you have.

  > If there are other possible ways to get the IP address

  A plugin is loaded into the Server's process. You can use the API of the operating system the Server runs on for determining the Server's local IP addresses.

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• 

  Permanently deleted user

  November 27, 2020 02:19

  Hi Andrey,

  Thanks for your reply. IP address can be retrieved via WIN32 API successfully.

  However, we bump into another issue.

   

  The retrieved IP addresses can show on the plugin UI when the string is hardcoded in the Engine::manifestString() as follows.

  std::string Engine::manifestString() const
  {
      return /*suppress newline*/ 1 + (const char*) R"json(
  {
      "deviceAgentSettingsModel": {
          "type": "Settings",
          "items": [
              {
                  "type": "ComboBox",
                  "name": "httpAddress",
                  "caption": "HTTP Address of Nx VMS",
                  "defaultValue": ")json" + GetDefaultVMSServerAddress() + R"json(",
  	        "range": [
  	            "http://192.168.16.33:7001/", "http://192.168.50.1:7001/", "http://192.168.70.1:7001/"
                  ]
              }
          ]
      }
  }
  )json";
  }

  While the string of the IP address list is dynamically generated by another function, it didn't work. The logged value of vms_ip_list is "http://192.168.16.33:7001/", "http://192.168.50.1:7001/", "http://192.168.70.1:7001/".

  std::string Engine::manifestString() const
  {
      return /*suppress newline*/ 1 + (const char*) R"json(
  {
      "deviceAgentSettingsModel": {
          "type": "Settings",
          "items": [
              {
                  "type": "ComboBox",
                  "name": "httpAddress",
                  "caption": "HTTP Address of Nx VMS",
                  "defaultValue": ")json" + GetDefaultVMSServerAddress() + R"json(",
  	        "range": [
  	            ")json" + GetVMSServerAddressList() + R"json("
                  ]
              }
          ]
      }
  }
  )json";
  }
  
  std::string Engine::GetVMSServerAddressList() const
  {
      if (vms_server_ip_list_->empty())
          GetDefaultVMSServerAddress();
  
      std::string vms_ip_list;
      for (size_t i = 0; i < vms_server_ip_list_->size(); i++) {
          vms_ip_list += "\"" + vms_server_ip_list_->at(i) + "\"";
          if (i < vms_server_ip_list_->size() - 1)
              vms_ip_list += ", ";
      }
      LOG_I("list %s", vms_ip_list.c_str());
      return vms_ip_list;
  }

   

  If there are some mistakes when we assign generated string and concatenate to Engine::manifestString().

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• 

  Andrey Terentyev

  • Network Optix team

  November 27, 2020 19:30

  Hello Tiffany,

  It seems, in this code there are unnecessary quotes

  "range": [
      ")json" + GetVMSServerAddressList() + R"json("
  ]

  The correct code would be

  "range": [
      )json" + GetVMSServerAddressList() + R"json(
  ]

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