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Error connecting to sync server: received HTTP/0.9 when not allowed

Posted: March 12th, 2022, 2:42 pm
by munirmdee1
Hi CSPro users,

Im getting an error:

Error connecting to sync server: received HTTP/0.9 when not allowed

When im downloading data from a csweb server, I dont know the cause for this error. Actually I was downloading it before, I dont know what went wrong.
Help please...

Thanks

Re: Error connecting to sync server: received HTTP/0.9 when not allowed

Posted: March 15th, 2022, 5:18 pm
by aaronw
HTTP/0.9 is an old protocol developed in 1991. By default cURL disables the handling of this HTTP version. You could turn it on:
https://everything.curl.dev/http/versions

The better question might be to ask why the server is sending HTTP/0.9 requests (if it actually is)? I would have your server team look into this.

error connecting to sync server. failed sending HTTP POST request

Posted: June 5th, 2024, 6:09 pm
by jpadvincula515
Please help me also, this message keep on reappearing every time I download data from Dropbox: "Error connecting to sync server. failed sending HTTP POST request"

Thank you in advance.

Re: Error connecting to sync server: received HTTP/0.9 when not allowed

Posted: June 6th, 2024, 10:43 am
by justinlakier
Hello,

It seems you are having an error connecting to the sync server for different reasons. Please attach (or send to cspro@lists.census.gov if it contains sensitive information) your sync.log file, found in desktop CSPro at "Help -> Troubleshooting -> sync.log file" or in your CSEntry folder on mobile. This should contain details about the post request and why it failed.

Hope this helps,
Justin