mirror of https://github.com/BOINC/boinc.git
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
// 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):
|
|
//
|
|
|
|
#include <time.h>
|
|
#include "client_types.h"
|
|
#include "file_xfer.h"
|
|
|
|
// PERS_FILE_XFER represents a persistent file transfer.
|
|
// A set of URL is given in the FILE_INFO.
|
|
|
|
// 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.
|
|
|
|
#define PERS_RETRY_DELAY_MIN 60 // 1 minute
|
|
#define PERS_RETRY_DELAY_MAX (60*60*4) // 4 hours
|
|
#define PERS_GIVEUP (60*60*24*7*2) // 2 weeks
|
|
// give up on xfer if this time elapses since last byte xferred
|
|
|
|
class PERS_FILE_XFER {
|
|
int nretry; // # of retries so far
|
|
int first_request_time; // UNIX time of first file request
|
|
int next_request_time; // UNIX time to next retry the file request
|
|
bool is_upload;
|
|
|
|
public:
|
|
bool xfer_done;
|
|
FILE_XFER* fxp; // nonzero if file xfer in progress
|
|
FILE_INFO* fip;
|
|
|
|
int init(FILE_INFO*, bool is_file_upload);
|
|
bool poll(unsigned int now);
|
|
void handle_xfer_failure(unsigned int cur_time);
|
|
int retry_and_backoff(unsigned int cur_time);
|
|
int write(FILE* fout);
|
|
int parse(FILE* fin);
|
|
bool start_xfer();
|
|
};
|
|
|
|
class PERS_FILE_XFER_SET {
|
|
FILE_XFER_SET* file_xfers;
|
|
public:
|
|
vector<PERS_FILE_XFER*>pers_file_xfers;
|
|
|
|
PERS_FILE_XFER_SET(FILE_XFER_SET*);
|
|
int insert(PERS_FILE_XFER*);
|
|
int remove(PERS_FILE_XFER*);
|
|
bool poll();
|
|
};
|