[RELEASED] - USPS XML API Real-time Shipping Rates

What Does This Contrib Do?

This contrib adds a real-time shipping method for USPS (United States Postal Service). It utilizes the USPS XML API interface to give exact quotes direct from the USPS quote server.

Requirements:

To use the contrib, it will require a few things:
• Quotes from USPS are given through your USPS WebTools account id. It’s a free account, and you can register for one here: https://secure.shippingapis.com/registration/
• cURL – This is an extension of php used for sending website requests in the background. This is used for requesting the quotes in the background. Most decent webhosting providers should have support for this. It can also be enabled on home servers by uncommenting extension=php_curl.dll in your php.ini file. Check for “cURL support” from your admin “Configuration->Server Info” menu. You probably already have this enabled.

Features:

• Full Domestic & International quote support. Automatically displays the proper quotes based on customer country code.
• Configurable supported shipping methods. Choose from all available postal service options and check the ones you will support on your store.
• Support for displaying the transit time for each service. For example if choosing “Priority Mail” you can also choose to display the returned transit time: (1-2 days).
• Full error message support. If there are account problems, or quote problems, or zip code verification problems, it will display a proper notification (without scaring the customer).
• Session-based quote checking. Once a quote is returned, it is saved in the session to prevent constant re-processing of the quote each time. If the customer leaves the shipping page after getting a quote, and then returns without changing any of the many checkpoints, it will use the session-based quote to enhance performance.
NOTE: The title is marked with a * if the quotes are fresh to easily identify when the quote process has occurred.

DEMO (user: demo@demo.com / pass: demo)

DOWNLOAD

Thanks for the contribution!  I am new to OpenCart (latest version installed) and am impressed with it's features and appearance/flow.

I don't see a location to set the TARE weight per product.  The reason I am asking is that I am having a problem with a product that weighs 2 ounces total that should be able to ship with USPS First Class (store configured to "ounces" and product set to "2" and "first class" enabled in this module).

When the cart displays the shipping info. it does not include a "first class" option.  The only thought I had is that a package/tare weight is being added somewhere that puts it over the 16oz limit.  Also, anyway to view the code request data sent to the USPS site?

I will take a look

This is a great contribution.  It's exactly what I was looking for.  Thank you!

I have encountered a small problem, though:  I've uploaded all files to the appropriate directories, and ran the .sql file in the database; However, on the open cart admin panel, under extensions --> shipping, even though USPS appears and has the + icon for installation, it won't install.  It keeps saying:  "Permission Denied!
You do not have permission to access this page, please refer to your system administrator."

Do you have any suggestions on how I can fix this error? 

Thank you.

It's not really an error, actually a feature of opencart078. All contribs have this "feature".

If its not too late, I would suggest that you upgrade or install the latest version of OpenCart. That will help this and a lot of other problems.

But if you just want to get this to work, you need to goto Admin->Configuration->UserGroups-Top Administrator
and add the new files as part of the selected files for both modify and access

Thank you so much!  It worked perfectly.