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SFTP download over HTTPS proxy stalls #6113

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bagder opened this issue Oct 22, 2020 · 4 comments
Closed

SFTP download over HTTPS proxy stalls #6113

bagder opened this issue Oct 22, 2020 · 4 comments

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@bagder
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@bagder bagder commented Oct 22, 2020

I did this

Download an SFTP file over an HTTPS proxy. It seems to stall:

curl -x https://127.0.0.1:8843 sftp://127.0.0.1/17M -o /dev/null --proxy-insecure -kv

I expected the following

Downloading a directory from the same server and proxy setup seems to work!

curl/libcurl version

Current git master.

curl 7.73.1-DEV (x86_64-pc-linux-gnu) libcurl/7.73.1-DEV OpenSSL/1.1.1h zlib/1.2.11 brotli/1.0.9 zstd/1.4.5 c-ares/1.16.1 libidn2/2.3.0 libpsl/0.21.0 (+libidn2/2.3.0) libssh2/1.9.0_DEV nghttp2/1.41.0-DEV librtmp/2.3
Release-Date: [unreleased]
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp 
Features: alt-svc AsynchDNS brotli Debug GSS-API HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz Metalink NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP TrackMemory UnixSockets zstd

operating system

Linux

@bagder
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@bagder bagder commented Oct 22, 2020

Clearly the fix in #6021 was not sufficient...

@0x447a
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@0x447a 0x447a commented Oct 23, 2020

Did you try using a different proxy?

@emilengler
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@emilengler emilengler commented Oct 24, 2020

Did you try using a different proxy?

I think it's rare that the problem lies in the server

@bagder
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@bagder bagder commented Oct 24, 2020

I know it isn't about the server or the proxy, a little simple debugging shows this. And anyone trying this should be able to reproduce fairly easily.

bagder added a commit that referenced this issue Oct 26, 2020
The fix in #6021 was not enough. This fix makes sure SCP/SFTP content
can also be transfered over a HTTPS proxy.

Fixes #6113
bagder added a commit that referenced this issue Oct 26, 2020
The fix in #6021 was not enough. This fix makes sure SCP/SFTP content
can also be transfered over a HTTPS proxy.

Fixes #6113
bagder added a commit that referenced this issue Oct 26, 2020
The fix in #6021 was not enough. This fix makes sure SCP/SFTP content
can also be transfered over a HTTPS proxy.

Fixes #6113
@bagder bagder closed this in 9a84462 Oct 29, 2020
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