boinc/client/pers_file_xfer.C

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// The contents of this file are subject to the Mozilla Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is the Berkeley Open Network Computing.
//
// The Initial Developer of the Original Code is the SETI@home project.
// Portions created by the SETI@home project are Copyright (C) 2002
// University of California at Berkeley. All Rights Reserved.
//
// Contributor(s):
//
// PERS_FILE_XFER represents a persistent file transfer.
// A set of URL is given.
// For download, the object attempts to download the file
// from any of the URLs.
// If one fails or is not available, try another,
// using an exponential backoff policy to avoid flooding servers.
// For upload, try to upload the file to the first URL;
// if that fails try the others.
int PERS_FILE_XFER::init(FILE_INFO&, bool is_upload) {
}
//
void PERS_FILE_XFER::try() {
}
void PERS_FILE_XFER::poll(unsigned int now) {
if (fxp) {
if (fxp->file_xfer_done) {
if (fxp->file_xfer_retval == 0) {
} else {
// file xfer failed.
// See if it's time to give up on the persistent file xfer
//
diff = now - fip->last_xfer_time;
if (diff > PERS_GIVEUP) {
pers_xfer_done = true;
pers_file_xfer_retval = ERR_GIVEUP;
}
}
}
} else {
// No file xfer is active.
// We must be waiting after a failure.
// See if it's time to try again.
//
if (now > retry_time) {
try();
}
}
}
int PERS_FILE_XFER_SET::poll() {
unsigned int ;
PERS_FILE_XFER* pfxp;
bool action = false;
int now = time(0);
for (i=0; i<pers_file_xfers.size(); i++) {
pers_file_xfers[i]->poll(now);
}
}