Web Demos

BARCODE READER SDK DEMO

Explore the flexibe barcode reading settings to optimize for your specific usage scenario.

WEB TWAIN SDK DEMO

Try the most popular web scanner features: scan images, import local images and PDF files, edit, save to local, upload to database, and etc.

BARCODE READER JAVASCRIPT DEMO

Transform any camera-equipped devices into real-time, browser-based barcode and QR code scanners.

MRZ SCANNER WEB DEMO

Detects the machine-readable zone of a passport, scans the text, and parses into human-readable data.

APP STORE DEMOS

BARCODE READER SDK FOR IOS

BARCODE READER SDK FOR ANDROID

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Dev Center
Table of contents

Error Troubleshooting

A connection with the server could not be established

Symptom

When attempting to upload images web server the upload fails and you receive the error message.

Cause

The problem may occur when a connection with the server is not available.

Resolution

  • Check if the HTTP port you set in your code coincides with the port number you set on your web server. You can use the HTTPPort property to set the port number.
  • Make sure the address of the server is available. To check this, you can ping the address from a client machine.

Note: Both the machine name and the IP address of the server can be used for the HTTPUpload method.

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