There are two options for downloading files with MassTransit Web – using the MassTransit Web Assistant plug-in or using the MassTransit HTTP feature.
The MassTransit Web Assistant plug-in needs to be downloaded and installed from the Web client or the Ad hoc contact the first time they log into the MassTransit web site from a particular Windows or Mac operating system. After that, they will not be prompted to install it unless the MassTransit server is upgraded.
If the installed plug-in version does not match with the MassTransit server version, the user will be prompted to download and install the newer version. If you are using a plug-in version 6.1.1 or higher, you will be able to transfer files with MassTransit 7 without performing an upgrade. Otherwise, the user will be able to transfer files only with HTTP.
In order Web client and Ad hoc contacts to be able to transfer files via HTTP, the administrator of MassTransit needs to configure the feature on the server first. The contacts can easily switch to use HTTP (and back to plug-in) when they are logged into the MassTransit web site.
If the connection to server is configured to be secure, when the Web client or Ad hoc contacts use HTTP to transfer files, they will be actually using HTTPS.