Uploading a File From a Client Host

From Unofficial BOINC Wiki

A persistent file can be retrieved from a specific host. This can be done using the function

get_file(int host_id, const char* file_name)

or the command line program

get_file -host_id X -file_name Y

This program must be run in the project's root directory.

The function get_file() creates a result with a name of the form:

get_FILENAME_HOSTID_TIME

Example: get_test.mpg_34_123456789 is a result representing the upload of test.mpg from host number 34 at time 1234567891.

An Upload Message is created for the specific Host and added to the msg_to_host table in the database. This message instructs the BOINC Daemon to upload the file and acknowledge a successful upload. The upload message included in the next RPC Reply to the host. The message has the form:

 <app>
    <name>FILE_MOVER</name>
 </app>
 <app_version>
    <app_name>FILE_MOVER</app_name>
    <version_num>BOINC_MAJOR_VERSION</version_num>
 </app_version>
 <file_info>
    <name>file_name</name>
    <url>upload_dir</url>
    <max_nbytes>1e10</max_nbytes>
    <upload_when_present/>
 </file_info>
    RESULT_XML
 <workunit>
    <name>result.name</name>
    <app_name>FILE_MOVER</app_name>
 </workunit>

Include

<msg_to_host/>

in config.xml. Currently

<ignore_upload_certificates/>

needs to be included as there is no way to send Upload Certificates with these files.

[edit] UCB Source

• Retrieving files

[edit] Copyright ©

• 2005 University of California
• 2005 Paul D. Buck

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.