Transferring Files

Once you have created your contacts and configured the desired communication methods, you are ready to transfer files.

There are two ways to transfer files. You can configure MassTransit to wait for incoming calls passively, or you can actively make a connection. In either case, all files designated for sending from both sides of the connection are transferred.

Info: Find detailed information about configuring incoming calls on the Communications page.

Info: For more information about creating contacts, see Contacts page.
You can find information about configuring communication methods on the Communications page.

To send files to others, you and the contact need to have the necessary options and privileges set. For example, a contact must enable the Receive Files From User option (from the contact's General privileges settings) to be able to receive files from you. In addition, if you initiate the transmission of files to the contact, the contact must have enabled the Answer Incoming Calls option (from the contact's General privileges settings) for the method you are calling.

Note: Find detailed information about privileges for transferring files in the General Privileges section of the Contacts page.

• If you and the contact have configured the desired privileges, you can send files to that contact by designating one or more files for transmission and placing a call to that contact.
• You can place a call to the contact manually or you can configure triggers for automatic calls.
• MassTransit has no real limitations in total size or number of files sent or received. In addition, MassTransit keeps a running total of the number of bytes sent and received.
• MassTransit can send a large number of gigabytes in a single transfer.
• MassTransit can send an almost unlimited number of files in a single transfer. The limit is 16,384 files in each direction during one transfer.

MassTransit 7.2 and later supports files transfer resume. The MTP_SUPPORT_RESUME = option is available in the MassTransitEngine.cfg file, under the "MassTransit Protocol tuning settings" section.

If this setting is set to true, MassTransit 7.2 or later will resume interrupted or stopped transfers on TCP/IP, TCP/IP secure, and UDP connections when connecting to other MassTransit 7.2 or later servers and web clients. Files will be received with "download extension", and if an error or disconnection occurs before the transmission completes, the files will be stored in the database as partially received. The sender will then try to resume sending of the files on the next connection, maintaining proper checksum calculation to ensure integrity. This feature only applies if both sides are running MassTransit 7.2 or later.

Note: The MassTransitEngine.cfg file is located in the MassTransit installation directory.

All lines beginning with "%%" in the MassTransitEngine.cfg file are considered commented and therefore ignored. Please ensure that all settings you change are uncommented (if you see "%%" characters at the beginning of any of the settings you modify, delete them).