curl-users
Cygwin's curl is only working in Safe Mode on Windows 7
Date: Tue, 8 Aug 2017 23:56:35 +0000
I've been pulling my hair out over this. Hoping someone has some ideas.
Something must have changed on my machine because this used to work OK. I
have Cygwin 64-bit installed on Windows 7. The curl command in the Cygwin
shell has been working fine for me in the past, but lately it might work for a
short time after a fresh reboot, but then it'll stop working until I
completely reboot again. Here's' what the output looks like with the verbose
(-v) option:
$ curl -v -L www.google.com
* STATE: INIT => CONNECT handle 0x600057970; line 1410 (connection #-5000)
* Rebuilt URL to: www.google.com/
* Added connection 0. The cache now contains 1 members
... and here's what the output looks like when it works fine:
$ curl -v -L www.google.com
* STATE: INIT => CONNECT handle 0x600057970; line 1410 (connection #-5000)
* Rebuilt URL to: www.google.com/
* Added connection 0. The cache now contains 1 members
* STATE: CONNECT => WAITRESOLVE handle 0x600057970; line 1446 (connection #0)
* Trying 172.217.0.132...
* TCP_NODELAY set
* STATE: WAITRESOLVE => WAITCONNECT handle 0x600057970; line 1527 (connection
#0)
* Connected to www.google.com (172.217.0.132) port 80 (#0)
* STATE: WAITCONNECT => SENDPROTOCONNECT handle 0x600057970; line 1579
(connection #0)
* Marked for [keep alive]: HTTP default
* STATE: SENDPROTOCONNECT => DO handle 0x600057970; line 1597 (connection #0)
> GET / HTTP/1.1
> Host: www.google.com
> User-Agent: curl/7.54.1
> Accept: */*
>
* STATE: DO => DO_DONE handle 0x600057970; line 1676 (connection #0)
* STATE: DO_DONE => WAITPERFORM handle 0x600057970; line 1801 (connection #0)
* STATE: WAITPERFORM => PERFORM handle 0x600057970; line 1811 (connection #0)
* HTTP 1.1 or later with persistent connection, pipelining supported
< HTTP/1.1 200 OK
< Date: Tue, 08 Aug 2017 22:47:30 GMT
< Expires: -1
< Cache-Control: private, max-age=0
< Content-Type: text/html; charset=ISO-8859-1
< P3P: CP="This is not a P3P policy! See
https://www.google.com/support/accounts/answer/151657?hl=en for more info."
* Server gws is not blacklisted
< Server: gws
< X-XSS-Protection: 1; mode=block
< X-Frame-Options: SAMEORIGIN
< Set-Cookie:
NID=109=qUfNKGtmpC18E2B31Mpbx2GFa5vPk481r3jaDu7Onuoj1f3gvigD_sQEGdag8SqNp-eVFhjmMT3O4TNXgYJLAZGIknpKqcWfmD_fAGo5C2gBRe5ieqgECh252Vze9Ymi;
expires=Wed, 07-Feb-2018 22:47:30 GMT; path=/; domain=.google.com; HttpOnly
< Accept-Ranges: none
< Vary: Accept-Encoding
< Transfer-Encoding: chunked
<
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* STATE: PERFORM => DONE handle 0x600057970; line 1980 (connection #0)
* multi_done
* Connection #0 to host www.google.com left intact
* Expire cleared
</script></div></body></html>
I think the problem may be DNS related. After my machine gets into a bad
state, I seem to get at least a little further using an IP address, though the
output is still not what it is when using a DNS name when the DNS name is
working:
$ curl -v -L 216.58.192.174
* STATE: INIT => CONNECT handle 0x600057970; line 1410 (connection #-5000)
* Rebuilt URL to: 216.58.192.174/
* Added connection 0. The cache now contains 1 members
* Trying 216.58.192.174...
* TCP_NODELAY set
* STATE: CONNECT => WAITCONNECT handle 0x600057970; line 1462 (connection #0)
* Connected to 216.58.192.174 (216.58.192.174) port 80 (#0)
* STATE: WAITCONNECT => SENDPROTOCONNECT handle 0x600057970; line 1579
(connection #0)
* Marked for [keep alive]: HTTP default
* STATE: SENDPROTOCONNECT => DO handle 0x600057970; line 1597 (connection #0)
> GET / HTTP/1.1
> Host: 216.58.192.174
> User-Agent: curl/7.54.1
> Accept: */*
>
* STATE: DO => DO_DONE handle 0x600057970; line 1676 (connection #0)
* STATE: DO_DONE => WAITPERFORM handle 0x600057970; line 1801 (connection #0)
* STATE: WAITPERFORM => PERFORM handle 0x600057970; line 1811 (connection #0)
* HTTP 1.1 or later with persistent connection, pipelining supported
< HTTP/1.1 301 Moved Permanently
< Location: http://www.google.com/
< Content-Type: text/html; charset=UTF-8
< Date: Tue, 08 Aug 2017 23:44:51 GMT
< Expires: Thu, 07 Sep 2017 23:44:51 GMT
< Cache-Control: public, max-age=2592000
* Server gws is not blacklisted
< Server: gws
< Content-Length: 219
< X-XSS-Protection: 1; mode=block
< X-Frame-Options: SAMEORIGIN
<
* Ignoring the response-body
* multi_done
* Connection #0 to host 216.58.192.174 left intact
* Issue another request to this URL: 'http://www.google.com/'
* STATE: PERFORM => CONNECT handle 0x600057970; line 1961 (connection #-5000)
* Added connection 1. The cache now contains 2 members
All of that being said, if I reboot my machine in Safe Mode, then the curl
command seems to work consistently. This make me think the problem is due to
some interference from some other application that runs when I'm not in Safe
Mode. I know that Cygwin has a list of BLODA (Big List Of Dodgy Apps) that
are known to cause issues, so maybe that's what's going on with me. (Ref:
https://cygwin.com/faq/faq.html#faq.using.bloda). If anything I've
uninstalled a lot of apps recently and haven't really installed new apps, so
I'm not sure what that could be. I guess I may try selectively disabling
things at startup using msconfig to see where that leads unless someone has
some other ideas. I have the CYGWIN environment variable set to detect_bloda
but so far no debug info has turned up.
Hoping someone has some other ideas of things to try, but I guess selective
startup is at least something I can try to do that I haven't tried already.
I should also say that I have the curl standalone app for Windows installed
and that works fine. it's just the one running under Cygwin. Grrrr.
Below is some version info in case that's helpful.
$ curl -V
curl 7.54.1 (x86_64-unknown-cygwin) libcurl/7.54.1 OpenSSL/1.0.2k zlib/1.2.11
libidn2/2.0.2 libpsl/0.17.0 (+libidn2/0.11) libssh2/1.7.0 nghttp2/1.23.1
Release-Date: 2017-06-14
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3
pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: AsynchDNS Debug IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM
NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets HTTPS-proxy Metalink PSL
$ uname -r
2.8.2(0.313/5/3)
$ uname -m
x86_64
$ python -V
Python 2.7.13
Thanks in advance.
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