File Transfer

Steps for receiving a file transfer with libemussa:

1. On receiving a file transfer, callback EMUSSA_CALLBACK_FILE_TRANSFER_REQUEST is called
2. When the user accepts the file transfer, call accept_transfer from libemussa library
3. Yahoo will send a file info packet; EMUSSA_CALLBACK_FILE_TRANSFER_INFO will be called
4. Download the file; if the transfer contains multiple files, after each successfully download call accept_transfer_next_file to get the next file (then the workflow restarts from point 3).

Steps for sending a file transfer with libemussa:

1. Call send_files from libemussa
2. When the other user will accept the file, callback EMUSSA_CALLBACK_FILE_TRANSFER_ACCEPT is called; otherwise libemussa will call EMUSSA_CALLBACK_FILE_TRANSFER_REJECT callback.
3. TODO
4. TODO

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