LexFloatServer

LexFloatServer is the licensing server software that leases floating licenses to your app. It is usually installed on any computer in your customer's local network. In case you have multiple products, each product will require its own instance of LexFloatServer.

LexFloatServer is designed to be robust, low memory and very fast. Hence, it can even be installed on any old machine connected to the local network.

LexFloatServer has VS2015 runtime dependency on Windows. Make sure dependency is installed before running the server.

Downloading the LexFloatServer

LexFloatServer can be downloaded from the downloads page in the dashboard. Simply login to your Cryptlex account and download LexFloatServer binary for Windows, macOS or Linux:

• ​Download LexFloatServer for Windows​

• ​Download LexFloatServer for macOS

• ​Download LexFloatServer for Linux​

Configuring the LexFloatServer

LexFloatServer uses a simple YAML-based text file as its config file. It expects a config.yml file to be in the same directory as LexFloatServer. If the config file is in some other directory it can be passed using the "-c" option.

The config is loaded at the start of the server. Any changes to the config file will be ignored until the server is restarted.

Starting LexFloatServer in terminal

For testing purposes, you can easily run the LexFloatServer in the terminal (command prompt). To start the server simply pass the "-s" option:

lexfloatserver -s

You need admin rights to run the LexFloatServer.

Activating the LexFloatServer

LexFloatServer needs to be activated using a license key of type "on-premise-floating" before it can be used. It can be activated using the dashboard, command-line options or Web API.

Using the Dashboard

LexFloatServer provides a web-based local dashboard that can be used to activate the server license.

Online activation

Open the dashboard using http://localhost:8090 URL in your browser. Click the Settings page icon and put in the license key to activate the server

Offline activation

To activate offline click on the "SWITCH TO OFFLINE ACTIVATION" option on the Settings page. Put in the license key to generate the offline activation request file.

After generating the offline response from the Cryptlex admin dashboard for this request, paste the offline response file contents in the input to activate the server:

Using command-line options

Online activation

To activate use "-a" option along with the license key and product file path (if not set in the config.yml file):

lexfloatserver -a --license-key LICENSE_KEY

Offline activation

To activate offline use "-g" option to generate the offline activation request:

lexfloatserver -g --license-key LICENSE_KEY --offline-request FILEPATH

After generating the offline response from the admin dashboard, pass it along with "-a" option to activate the server:

lexfloatserver -a --license-key=LICENSE_KEY --offline-response=FILEPATH

Using Web API

LexFloatServer exposes a few API endpoints which can also be used to activate the server.

Online activation

Send a POST request to the /api/server/activate API endpoint with a JSON request body containing the license key and optionally the activation metadata.

Activate server

POST http://localhost:8090/api/server/activate

Request Body

Name	Type	Description
licenseKey	string	License key to activate the server.
metadata	array	Activation metadata.

200

{
  "message": "Server license activation successful!",
  "code": "SERVER_LICENSE_ACTIVATED"
}

400

{
  "message": "Server license activation failed!",
  "code": "SERVER_INVALID_LICENSE_KEY"
}

Offline activation

Send a POST request to the /api/server/offline-activation-request API endpoint with a JSON request body containing the license key and optionally the activation metadata.

Generate offline activation request

POST http://localhost:8090/api/server/offline-activation-request

Request Body

Name	Type	Description
licenseKey	string	License key to activate the server.
metadata	array	Activation metadata.

200

{
  "offlineRequest": "U7l69tNy8..."
}

After generating the offline response from the admin dashboard, send a POST request to the /api/server/offline-activate API endpoint with a JSON request body containing the license key and the offline response.

Activate server offline

POST http://localhost:8090/api/server/offline-activate

Request Body

Name	Type	Description
licenseKey	string	License key to activate the server.
offlineResponse	string	Offline activation response.

200

{
  "message": "Server offline license activation successful!",
  "code": "SERVER_LICENSE_ACTIVATED"
}

400

{
  "message": "Server offline license activation failed!",
  "code": "SERVER_INVALID_LICENSE_KEY"

Installing LexFloatServer on Windows

LexFloatServer runs as a service on Windows. To install it as a service simply pass the "-i" option along with the service name and optionally a service display name which is displayed in the Windows Services Manager:

lexfloatserver -i --service-name myfloatingserver --service-display-name MyFloatingServer

After installation, it is set to start with the computer and run silently in the background.

Stop/Start LexFloatServer on Windows

To stop or start the server from the command line you need the "service name". If the service name was not passed during installation then it defaults to lexfloatserver-productId (where product id is the id of your product):

sc stop myfloatingserver
sc start myfloatingserver

Uninstalling LexFloatServer on Windows

To uninstall simply pass "-d" option to deactivate the server license and then "-u" option to remove the service:

lexfloatserver -d
lexfloatserver -u --service-name myfloatingserver

Installing LexFloatServer on Linux

LexFloatServer can run as a Systemd, Upstart or SysV service on Linux. To install it as a service simply pass the "-i" option along with the service name:

lexfloatserver -i --service-name myfloatingserver

After installation, it is set to start with the computer and run silently in the background.

Stop/Start LexFloatServer on Linux

To stop or start the server from the command line, you need the service name. If the service name was not passed during installation then it defaults to lexfloatserver.productId (where product id is the id of your product):

sudo service myfloatingserver stop
sudo service myfloatingserver start

Uninstalling LexFloatServer on Linux

To uninstall simply pass "-d" option to deactivate and then "-u" option to remove the daemon:

lexfloatserver -d
lexfloatserver -u --service-name myfloatingserver

Installing LexFloatServer on macOS

LexFloatServer runs as a launchd daemon on macOS. To install it as a service simply pass the "-i" option along with the service name:

lexfloatserver -i --service-name com.mycompany.myfloatingserver

After installation, it is set to start with the computer and run silently in the background.

Stop/Start LexFloatServer on macOS

To stop or start the server from the command line, you need the service name. If the service name was not passed during installation then it defaults to com.lexfloatserver.productId (where product id is the id of your product):

sudo launchctl stop com.mycompany.myfloatingserver
sudo launchctl start com.mycompany.myfloatingserver

Uninstalling LexFloatServer on macOS

To uninstall simply pass "-d" option to deactivate and then "-u" option to remove the daemon:

lexfloatserver -d
lexfloatserver -u --service-name com.mycompany.myfloatingserver

Getting server stats

LexFloatServer exposes a stats API endpoint that can be used to get the current stats of the server.

Gets the server stats

GET http://localhost:8090/api/server/stats

Gets the current server stats

200

{
    "leaseDuration": 60,
    "maxOfflineLeaseDuration": 30,
    "allowedFloatingClients": 10,
    "allowedOfflineFloatingClients": 0,
    "totalFloatingClients": 5,
    "totalOfflineFloatingClients": 0,
    "leasingStrategy": "per-machine",
    "version": "4.13.3",
    "status": "ok",
    "expiresAt": 1751178927,
    "serverSyncGracePeriodExpiresAt": 0
}

Getting server license info

LexFloatServer exposes a license info API endpoint that can be used to get the information related to the license used to activate the LexFloatServer.

Gets the license info

GET http://localhost:8090/api/server/license-info

Gets the license info of the license used to activate the LexFloatServer

200: OK

{
  "key": "280D2B-B48A03-406BBC-2EEE4A-C20FB3-749630",
  "allowedFloatingClients": 10,
  "createdAt": 1680518500,
  "activatedAt": 1680518506,
  "expiresAt": 1681814506,
  "serverSyncGracePeriodExpiresAt": 1680775357,
  "activationMode": {
    "initial": "online",
    "current": "online"
  },
  "user": {
    "name": "John Doe",
    "email": "[e-mail]",
    "company": "My Example Company"
  },
  "organization": null
}

Getting the list of floating licenses

LexFloatServer exposes a floating-licenses API endpoint that can be used to get the leased floating licenses.

Gets the list of floating licenses

GET http://localhost:8090/api/floating-licenses

Gets the current server stats

200

[
  {
    "id": "3a13465d984ef1f4b21b2117e0b3f591116f6b027fa8a19f332fbc43651f3d2c",
    "ip": "127.0.0.1",
    "os": "macos",
    "osVersion": "10.14",
    "hostname": "MB-Pro.local",
    "clientVersion": "4.0.0",
    "expiresAt": 1545019266,
    "updatedAt": 1545019236,
    "createdAt": 1545019236,
    "metadata": [
      {
        "key": "name",
        "value": "John Doe"
      }
    ]
  }
]

Getting server license meter attributes

LexFloatServer exposes a license meter attributes API endpoint that can be used to get the list of all the meter attributes of the license used to activate the LexFloatServer.

Gets the list of license meter attributes

GET http://localhost:8090/api/server/license-meter-attributes

Gets the list of meter attributes of the license used to activate the LexFloatServer

200: OK

[
  {
    "id": "string",
    "name": "string",
    "allowedUses": 0,
    "totalUses": 0,
    "grossUses": 0,  
  }
]