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Full Discussion: Best way to transfer files to remote FTPS server instead of local FTPS server
Top Forums UNIX for Advanced & Expert Users Best way to transfer files to remote FTPS server instead of local FTPS server Post 302999439 by rbatte1 on Tuesday 20th of June 2017 09:39:18 AM
Old 06-20-2017
I will write this assuming that the place they are generated/written is Site A and they have clients in Site B.

Even though they two sites may only be 20 miles apart, you may find that there is a much smaller link between the sites. It is common to have 100Mb network at both sites, but only a 2Mb link between them. For small files being read at Site B that is not a problem. The issue is with larger files. I would suggest having a process to get a copy of files to Site B. You could implement some logic like this:-
  • When a large file is written to Site A, you should save a timestamp in a reference file and begin a copy to Site B. You can copy however you like, be that (s)ftp, rcp/scp, rsync or anything else that works for you.
  • When reading a larger file at site B, read the Site A reference file first and get the timestamp, comparing it with the timestamp of the local file. If the Site B file is up to date, read the local file; if not then read the Site A file.

An alternate may be to remove the Site B file when a new file is written to Site A and atomically copy the file to Site B. That way the Site B client just has to read the Site B file. If that fails (i.e. there is no file) then read the Site A file.



Would either of these work for you?

I hope that it helps,
Robin
 

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LEARN ABOUT MOJAVE

curlopt_ssl_verifystatus

CURLOPT_SSL_VERIFYSTATUS(3)				     curl_easy_setopt options				       CURLOPT_SSL_VERIFYSTATUS(3)

NAME

       CURLOPT_SSL_VERIFYSTATUS - verify the certificate's status

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_VERIFYSTATUS, long verify);

DESCRIPTION

       Pass a long as parameter set to 1 to enable or 0 to disable.

       This  option  determines  whether libcurl verifies the status of the server cert using the "Certificate Status Request" TLS extension (aka.
       OCSP stapling).

       Note that if this option is enabled but the server does not support the TLS extension, the verification will fail.

DEFAULT

       0

PROTOCOLS

       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE

       TODO

AVAILABILITY

       Added in 7.41.0. This option is currently only supported by the OpenSSL, GnuTLS and NSS TLS backends.

RETURN VALUE

       Returns CURLE_OK if OCSP stapling is supported by the SSL backend, otherwise returns CURLE_NOT_BUILT_IN.

SEE ALSO

       CURLOPT_SSL_VERIFYHOST(3), CURLOPT_SSL_VERIFYPEER(3), CURLOPT_CAINFO(3),

libcurl 7.54.0							 February 03, 2016				       CURLOPT_SSL_VERIFYSTATUS(3)
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