Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

curl_easy_perform() in curl 8.9.1 fails with OPERATION_TIMEOUT #14843

Closed
rmja opened this issue Sep 10, 2024 · 5 comments
Closed

curl_easy_perform() in curl 8.9.1 fails with OPERATION_TIMEOUT #14843

rmja opened this issue Sep 10, 2024 · 5 comments
Assignees
@icing

Comments

@rmja
Copy link

rmja commented Sep 10, 2024

I did this

I am uploading a file to a Microsoft FTP Service using libcurl from C#. This has worked fine, but after updating to libcurl 8.9.1 it seems as if curl_easy_perform() now returns OPERATION_TIMEOUT. The call is going through a socks proxy (needed for me to access the FTP server due to firewall restrictions).

I hope that you can use my description below, even though it is from C#. It is the the verbose output obtained through the CURLoption.DEBUGFUNCTION handler.
Note that the file is actually uploaded - but, if I specify a POSTQUOTE to be run after the upload, then it is not executed.

CURLINFO_TEXT: 09.56.39.337 Trying 52.29.67.170:1080...
CURLINFO_TEXT: 09.56.39.363 Connected to 52.29.67.170 (52.29.67.170) port 1080
CURLINFO_TEXT: 09.56.39.454 Host kamanaftps01.westeurope.cloudapp.azure.com:21 was resolved.
CURLINFO_TEXT: 09.56.39.457 IPv6: (none)
CURLINFO_TEXT: 09.56.39.459 IPv4: 52.174.49.89
CURLINFO_TEXT: 09.56.39.461 SOCKS5 connect to 52.174.49.89:21 (locally resolved)
CURLINFO_TEXT: 09.56.39.495 SOCKS5 request granted.
CURLINFO_TEXT: 09.56.39.497 Connected to 52.29.67.170 (52.29.67.170) port 1080
CURLINFO_HEADER_IN: 09.56.39.504 220 Microsoft FTP Service
CURLINFO_HEADER_OUT: 09.56.39.506 AUTH SSL
CURLINFO_HEADER_IN: 09.56.39.537 234 AUTH command ok. Expecting TLS Negotiation.
CURLINFO_TEXT: 09.56.39.540 TLSv1.2 (OUT), TLS handshake, Client hello (1):
CURLINFO_SSL_DATA_OUT: 09.56.39.542 �CURLINFO_TEXT: 09.56.39.573 TLSv1.2 (IN), TLS handshake, Server hello (2):
CURLINFO_SSL_DATA_IN: 09.56.39.575 �CURLINFO_TEXT: 09.56.39.577 TLSv1.2 (IN), TLS handshake, Certificate (11):
CURLINFO_SSL_DATA_IN: 09.56.39.579 �CURLINFO_TEXT: 09.56.39.581 TLSv1.2 (IN), TLS handshake, Server key exchange (12):
CURLINFO_SSL_DATA_IN: 09.56.39.583 CURLINFO_TEXT: 09.56.39.585 TLSv1.2 (IN), TLS handshake, Server finished (14):
CURLINFO_SSL_DATA_IN: 09.56.39.586 �CURLINFO_TEXT: 09.56.39.588 TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
CURLINFO_SSL_DATA_OUT: 09.56.39.589 �CURLINFO_TEXT: 09.56.39.591 TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_OUT: 09.56.39.592 �
CURLINFO_TEXT: 09.56.39.594 TLSv1.2 (OUT), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_OUT: 09.56.39.596 �CURLINFO_TEXT: 09.56.39.629 TLSv1.2 (IN), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_IN: 09.56.39.631 �
CURLINFO_TEXT: 09.56.39.633 TLSv1.2 (IN), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_IN: 09.56.39.635 �CURLINFO_TEXT: 09.56.39.636 SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 / [blank] / UNDEF
CURLINFO_TEXT: 09.56.39.638 Server certificate:
CURLINFO_TEXT: 09.56.39.639 subject: CN=kamanaftps01.westeurope.cloudapp.azure.com
CURLINFO_TEXT: 09.56.39.641 start date: Sep 12 05:59:33 2023 GMT
CURLINFO_TEXT: 09.56.39.642 expire date: Oct 13 05:59:33 2024 GMT
CURLINFO_TEXT: 09.56.39.644 subjectAltName: host "kamanaftps01.westeurope.cloudapp.azure.com" matched cert's "kamanaftps01.westeurope.cloudapp.azure.com"
CURLINFO_TEXT: 09.56.39.646 issuer: C=US; ST=Arizona; L=Scottsdale; O=GoDaddy.com, Inc.; OU=http://certs.godaddy.com/repository/; CN=Go Daddy Secure Certificate Authority - G2
CURLINFO_TEXT: 09.56.39.647 SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
CURLINFO_TEXT: 09.56.39.649 Certificate level 0: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_TEXT: 09.56.39.651 Certificate level 1: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_HEADER_OUT: 09.56.39.653 USER username
CURLINFO_HEADER_IN: 09.56.39.685 331 Password required
CURLINFO_HEADER_OUT: 09.56.39.687 PASS password
CURLINFO_HEADER_IN: 09.56.39.734 230 User logged in.
CURLINFO_HEADER_OUT: 09.56.39.736 PBSZ 0
CURLINFO_HEADER_IN: 09.56.39.768 200 PBSZ command successful.
CURLINFO_HEADER_OUT: 09.56.39.770 PROT P
CURLINFO_HEADER_IN: 09.56.39.802 200 PROT command successful.
CURLINFO_HEADER_OUT: 09.56.39.805 PWD
CURLINFO_HEADER_IN: 09.56.39.837 257 "/" is current directory.
CURLINFO_TEXT: 09.56.39.840 Entry path is '/'
CURLINFO_TEXT: 09.56.39.842 Request has same path as previous transfer
CURLINFO_HEADER_OUT: 09.56.39.844 EPSV
CURLINFO_TEXT: 09.56.39.846 Connect data stream passively
CURLINFO_HEADER_IN: 09.56.39.876 229 Entering Extended Passive Mode (|||16897|)
CURLINFO_TEXT: 09.56.39.878 Hostname 52.29.67.170 was found in DNS cache
CURLINFO_TEXT: 09.56.39.880 Connecting to kamanaftps01.westeurope.cloudapp.azure.com (52.29.67.170) port 1080
CURLINFO_TEXT: 09.56.39.882 Trying 52.29.67.170:1080...
CURLINFO_TEXT: 09.56.39.907 Connected 2nd connection to 52.29.67.170 port 1080
CURLINFO_TEXT: 09.56.39.968 Host kamanaftps01.westeurope.cloudapp.azure.com:16897 was resolved.
CURLINFO_TEXT: 09.56.39.970 IPv6: (none)
CURLINFO_TEXT: 09.56.39.972 IPv4: 52.174.49.89
CURLINFO_TEXT: 09.56.39.974 SOCKS5 connect to 52.174.49.89:16897 (locally resolved)
CURLINFO_TEXT: 09.56.40.007 SOCKS5 request granted.
CURLINFO_TEXT: 09.56.40.010 Connected 2nd connection to 52.29.67.170 port 1080
CURLINFO_TEXT: 09.56.40.012 SSL reusing session ID
CURLINFO_TEXT: 09.56.40.015 TLSv1.2 (OUT), TLS handshake, Client hello (1):
CURLINFO_SSL_DATA_OUT: 09.56.40.017 �CURLINFO_HEADER_OUT: 09.56.40.019 TYPE I
CURLINFO_HEADER_IN: 09.56.40.050 200 Type set to I.
CURLINFO_HEADER_OUT: 09.56.40.053 STOR upload-testfile-5e047ec0-0bc6-4eab-854d-9c5a70f2ae61.txt.tmp
CURLINFO_HEADER_IN: 09.56.40.125 125 Data connection already open; Transfer starting.
CURLINFO_TEXT: 09.56.40.128 TLSv1.2 (IN), TLS handshake, Server hello (2):
CURLINFO_SSL_DATA_IN: 09.56.40.130 �CURLINFO_TEXT: 09.56.40.132 TLSv1.2 (IN), TLS handshake, Certificate (11):
CURLINFO_SSL_DATA_IN: 09.56.40.134 �CURLINFO_TEXT: 09.56.40.136 TLSv1.2 (IN), TLS handshake, Server key exchange (12):
CURLINFO_SSL_DATA_IN: 09.56.40.138 CURLINFO_TEXT: 09.56.40.140 TLSv1.2 (IN), TLS handshake, Server finished (14):
CURLINFO_SSL_DATA_IN: 09.56.40.142 �CURLINFO_TEXT: 09.56.40.145 TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
CURLINFO_SSL_DATA_OUT: 09.56.40.146 �CURLINFO_TEXT: 09.56.40.149 TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_OUT: 09.56.40.150 �
CURLINFO_TEXT: 09.56.40.153 TLSv1.2 (OUT), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_OUT: 09.56.40.154 �CURLINFO_TEXT: 09.56.40.188 TLSv1.2 (IN), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_IN: 09.56.40.190 �
CURLINFO_TEXT: 09.56.40.192 TLSv1.2 (IN), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_IN: 09.56.40.194 �CURLINFO_TEXT: 09.56.40.196 SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 / [blank] / UNDEF
CURLINFO_TEXT: 09.56.40.198 Server certificate:
CURLINFO_TEXT: 09.56.40.200 subject: CN=kamanaftps01.westeurope.cloudapp.azure.com
CURLINFO_TEXT: 09.56.40.202 start date: Sep 12 05:59:33 2023 GMT
CURLINFO_TEXT: 09.56.40.204 expire date: Oct 13 05:59:33 2024 GMT
CURLINFO_TEXT: 09.56.40.206 subjectAltName: host "kamanaftps01.westeurope.cloudapp.azure.com" matched cert's "kamanaftps01.westeurope.cloudapp.azure.com"
CURLINFO_TEXT: 09.56.40.208 issuer: C=US; ST=Arizona; L=Scottsdale; O=GoDaddy.com, Inc.; OU=http://certs.godaddy.com/repository/; CN=Go Daddy Secure Certificate Authority - G2
CURLINFO_TEXT: 09.56.40.210 SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
CURLINFO_TEXT: 09.56.40.212 Certificate level 0: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_TEXT: 09.56.40.214 Certificate level 1: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_DATA_OUT: 09.56.40.217 This is a testfile
CURLINFO_TEXT: 09.56.40.219 TLSv1.2 (OUT), TLS alert, close notify (256):
CURLINFO_SSL_DATA_OUT: 09.56.40.221 �CURLINFO_TEXT: 09.56.42.234 SSL shutdown timeout
CURLINFO_TEXT: 09.56.42.236 closing connection #0

Let me know if there is some CURLOption that I can specify to help with diagnosing the issue further.
I can do the same uploads to a vsftpd server without any issues.
I believe this is related to #13904.

I expected the following

I expect the perform operation to not return an error, and if a POSTQUOTE is specified, to have it be executed.

curl/libcurl version

libcurl 8.9.1 (this worked in libcurl 8.8.0)

operating system

I have tried both on Windows and alpine linux with verified libcurl 8.9.1
@icing
Copy link
Contributor

icing commented Sep 10, 2024

Thanks for your report. Indeed, this looks like an effect of the shutdown changes. What seems to happen:

  • curl opens the FTP data connection
  • uploads the file
  • shuts down the data connection, a TIMEOUT error is reported (although the log times show that there seems an issue here)
  • the transfer fails and your POSTQUOTE is not executed

I'll try to find the cause of the untimely TIMEOUT. Can you build a libcurl yourself for testing?

@icing icing self-assigned this Sep 10, 2024
@rmja
Copy link
Author

rmja commented Sep 10, 2024

I may be able to, but have not done it before. I am on Windows. If you can create a libcurl-x64.dll that I can test, that would be greatly appreciated.

icing added a commit to icing/curl that referenced this issue Sep 10, 2024
@icing
shutdown send, proceed normally on timeout
c560c97 
When ending an FTP upload, we shut down the connection gracefully,
since the server should be notified we had send all bytes. Mostly,
this is a NOP without TLS involved. With TLS, close-notify messages
should be exchanged.

As reported in curl#14843, not all servers seem to do that. Since it
is the server's responsiblity to check it has received everything,
we just log the timeout and proceed as if everything is fine.

In the receive direction, we still fail the transfer if the server
does not shut down its direction properly.
@icing icing mentioned this issue Sep 10, 2024
Closed
@icing
Copy link
Contributor

icing commented Sep 10, 2024

I made #14848 with a possible fix for your situation. What could be interesting is to see a trace when you add curl_global_trace("ftp,ssl,tcp") at the start of your application. Then we'll see more details.

So far, I can only assume that the server is broken insofar as it does not shutdown the DATA connection properly. You notice the 2 second delay until the timeout on shutdown is reported. That is curl's default waiting time.

Note: since we have a release tomorrow, we'll not merge the PR right away and you will not get it in our daily curl Windows builds.

@rmja
Copy link
Author

rmja commented Sep 10, 2024

@icing thank you for looking into this! Please see the attached extended log output:

CURLINFO_TEXT: 14.32.44.840 [FTP] [STOP] setup connection -> 0
CURLINFO_TEXT: 14.32.44.847 Trying 52.29.67.170:1080...
CURLINFO_TEXT: 14.32.44.850 [TCP] cf_socket_open() -> 0, fd=1560
CURLINFO_TEXT: 14.32.44.853 [TCP] local address 0.0.0.0 port 56757...
CURLINFO_TEXT: 14.32.44.856 [TCP] adjust_pollset, !connected, POLLOUT fd=1560
CURLINFO_TEXT: 14.32.44.876 [TCP] adjust_pollset, !connected, POLLOUT fd=1560
CURLINFO_TEXT: 14.32.44.878 [TCP] connected
CURLINFO_TEXT: 14.32.44.881 Connected to 52.29.67.170 (52.29.67.170) port 1080
CURLINFO_TEXT: 14.32.44.884 [TCP] send(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.44.887 [TCP] recv(len=2) -> -1, err=81
CURLINFO_TEXT: 14.32.44.906 [TCP] recv(len=2) -> 2, err=0
CURLINFO_TEXT: 14.32.44.910 [TCP] send(len=43) -> 43, err=0
CURLINFO_TEXT: 14.32.44.912 [TCP] recv(len=2) -> -1, err=81
CURLINFO_TEXT: 14.32.44.941 [TCP] recv(len=2) -> 2, err=0
CURLINFO_TEXT: 14.32.44.999 Host kamanaftps01.westeurope.cloudapp.azure.com:21 was resolved.
CURLINFO_TEXT: 14.32.45.002 IPv6: (none)
CURLINFO_TEXT: 14.32.45.004 IPv4: 52.174.49.89
CURLINFO_TEXT: 14.32.45.007 SOCKS5 connect to 52.174.49.89:21 (locally resolved)
CURLINFO_TEXT: 14.32.45.010 [TCP] send(len=10) -> 10, err=0
CURLINFO_TEXT: 14.32.45.012 [TCP] recv(len=10) -> -1, err=81
CURLINFO_TEXT: 14.32.45.041 [TCP] recv(len=10) -> 10, err=0
CURLINFO_TEXT: 14.32.45.044 SOCKS5 request granted.
CURLINFO_TEXT: 14.32.45.048 Connected to 52.29.67.170 (52.29.67.170) port 1080
CURLINFO_TEXT: 14.32.45.052 [FTP] [STOP] -> [WAIT220]
CURLINFO_TEXT: 14.32.45.055 [TCP] recv(len=900) -> 27, err=0
CURLINFO_HEADER_IN: 14.32.45.058 220 Microsoft FTP Service
CURLINFO_TEXT: 14.32.45.062 [TCP] send(len=10) -> 10, err=0
CURLINFO_HEADER_OUT: 14.32.45.065 AUTH SSL
CURLINFO_TEXT: 14.32.45.069 [FTP] [WAIT220] -> [AUTH]
CURLINFO_TEXT: 14.32.45.092 [TCP] recv(len=900) -> 49, err=0
CURLINFO_HEADER_IN: 14.32.45.097 234 AUTH command ok. Expecting TLS Negotiation.
CURLINFO_TEXT: 14.32.45.102 [SSL] added
CURLINFO_TEXT: 14.32.45.106 [SSL] cf_connect()
CURLINFO_TEXT: 14.32.45.113 [TCP] send(len=235) -> 235, err=0
CURLINFO_TEXT: 14.32.45.117 [SSL] ossl_bio_cf_out_write(len=235) -> 235, err=0
CURLINFO_TEXT: 14.32.45.121 TLSv1.2 (OUT), TLS handshake, Client hello (1):
CURLINFO_SSL_DATA_OUT: 14.32.45.125 �CURLINFO_TEXT: 14.32.45.129 [TCP] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.133 [SSL] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.137 [SSL] populate_x509_store, path=none, blob=0
CURLINFO_TEXT: 14.32.45.144 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.147 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.152 [TCP] recv(len=3359) -> 3359, err=0
CURLINFO_TEXT: 14.32.45.155 [SSL] ossl_bio_cf_in_read(len=3359) -> 3359, err=0
CURLINFO_TEXT: 14.32.45.159 TLSv1.2 (IN), TLS handshake, Server hello (2):
CURLINFO_SSL_DATA_IN: 14.32.45.162 �CURLINFO_TEXT: 14.32.45.167 TLSv1.2 (IN), TLS handshake, Certificate (11):
CURLINFO_SSL_DATA_IN: 14.32.45.170 �CURLINFO_TEXT: 14.32.45.181 TLSv1.2 (IN), TLS handshake, Server key exchange (12):
CURLINFO_SSL_DATA_IN: 14.32.45.184 CURLINFO_TEXT: 14.32.45.189 TLSv1.2 (IN), TLS handshake, Server finished (14):
CURLINFO_SSL_DATA_IN: 14.32.45.192 �CURLINFO_TEXT: 14.32.45.196 TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
CURLINFO_SSL_DATA_OUT: 14.32.45.201 �CURLINFO_TEXT: 14.32.45.204 TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_OUT: 14.32.45.208 �
CURLINFO_TEXT: 14.32.45.212 TLSv1.2 (OUT), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_OUT: 14.32.45.216 �CURLINFO_TEXT: 14.32.45.220 [TCP] send(len=93) -> 93, err=0
CURLINFO_TEXT: 14.32.45.224 [SSL] ossl_bio_cf_out_write(len=93) -> 93, err=0
CURLINFO_TEXT: 14.32.45.229 [TCP] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.232 [SSL] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.251 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.255 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.259 [TCP] recv(len=1) -> 1, err=0
CURLINFO_TEXT: 14.32.45.263 [SSL] ossl_bio_cf_in_read(len=1) -> 1, err=0
CURLINFO_TEXT: 14.32.45.268 TLSv1.2 (IN), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_IN: 14.32.45.272 �
CURLINFO_TEXT: 14.32.45.276 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.281 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.286 [TCP] recv(len=40) -> 40, err=0
CURLINFO_TEXT: 14.32.45.290 [SSL] ossl_bio_cf_in_read(len=40) -> 40, err=0
CURLINFO_TEXT: 14.32.45.294 TLSv1.2 (IN), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_IN: 14.32.45.299 �CURLINFO_TEXT: 14.32.45.304 [SSL] Added Session ID to cache for ftp://kamanaftps01.westeurope.cloudapp.azure.com:21 [server]
CURLINFO_TEXT: 14.32.45.308 SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 / [blank] / UNDEF
CURLINFO_TEXT: 14.32.45.312 Server certificate:
CURLINFO_TEXT: 14.32.45.316 subject: CN=kamanaftps01.westeurope.cloudapp.azure.com
CURLINFO_TEXT: 14.32.45.321 start date: Sep 12 05:59:33 2023 GMT
CURLINFO_TEXT: 14.32.45.325 expire date: Oct 13 05:59:33 2024 GMT
CURLINFO_TEXT: 14.32.45.329 subjectAltName: host "kamanaftps01.westeurope.cloudapp.azure.com" matched cert's "kamanaftps01.westeurope.cloudapp.azure.com"
CURLINFO_TEXT: 14.32.45.333 issuer: C=US; ST=Arizona; L=Scottsdale; O=GoDaddy.com, Inc.; OU=http://certs.godaddy.com/repository/; CN=Go Daddy Secure Certificate Authority - G2
CURLINFO_TEXT: 14.32.45.337 SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
CURLINFO_TEXT: 14.32.45.340 Certificate level 0: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_TEXT: 14.32.45.343 Certificate level 1: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_TEXT: 14.32.45.346 [SSL] cf_connect() -> 0, done=1
CURLINFO_TEXT: 14.32.45.349 [TCP] send(len=48) -> 48, err=0
CURLINFO_TEXT: 14.32.45.353 [SSL] ossl_bio_cf_out_write(len=48) -> 48, err=0
CURLINFO_HEADER_OUT: 14.32.45.357 USER username
CURLINFO_TEXT: 14.32.45.361 [FTP] [AUTH] -> [USER]
CURLINFO_TEXT: 14.32.45.379 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.383 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.388 [TCP] recv(len=47) -> 47, err=0
CURLINFO_TEXT: 14.32.45.391 [SSL] ossl_bio_cf_in_read(len=47) -> 47, err=0
CURLINFO_TEXT: 14.32.45.395 [SSL] cf_recv(len=900) -> 23, 0
CURLINFO_HEADER_IN: 14.32.45.398 331 Password required
CURLINFO_TEXT: 14.32.45.401 [TCP] send(len=47) -> 47, err=0
CURLINFO_TEXT: 14.32.45.404 [SSL] ossl_bio_cf_out_write(len=47) -> 47, err=0
CURLINFO_HEADER_OUT: 14.32.45.407 PASS password
CURLINFO_TEXT: 14.32.45.411 [FTP] [USER] -> [PASS]
CURLINFO_TEXT: 14.32.45.442 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.445 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.449 [TCP] recv(len=45) -> 45, err=0
CURLINFO_TEXT: 14.32.45.452 [SSL] ossl_bio_cf_in_read(len=45) -> 45, err=0
CURLINFO_TEXT: 14.32.45.455 [SSL] cf_recv(len=900) -> 21, 0
CURLINFO_HEADER_IN: 14.32.45.459 230 User logged in.
CURLINFO_TEXT: 14.32.45.463 [TCP] send(len=37) -> 37, err=0
CURLINFO_TEXT: 14.32.45.466 [SSL] ossl_bio_cf_out_write(len=37) -> 37, err=0
CURLINFO_HEADER_OUT: 14.32.45.470 PBSZ 0
CURLINFO_TEXT: 14.32.45.473 [FTP] [PASS] -> [PBSZ]
CURLINFO_TEXT: 14.32.45.493 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.497 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.502 [TCP] recv(len=54) -> 54, err=0
CURLINFO_TEXT: 14.32.45.506 [SSL] ossl_bio_cf_in_read(len=54) -> 54, err=0
CURLINFO_TEXT: 14.32.45.510 [SSL] cf_recv(len=900) -> 30, 0
CURLINFO_HEADER_IN: 14.32.45.514 200 PBSZ command successful.
CURLINFO_TEXT: 14.32.45.518 [TCP] send(len=37) -> 37, err=0
CURLINFO_TEXT: 14.32.45.522 [SSL] ossl_bio_cf_out_write(len=37) -> 37, err=0
CURLINFO_HEADER_OUT: 14.32.45.526 PROT P
CURLINFO_TEXT: 14.32.45.530 [FTP] [PBSZ] -> [PROT]
CURLINFO_TEXT: 14.32.45.548 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.551 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.555 [TCP] recv(len=54) -> 54, err=0
CURLINFO_TEXT: 14.32.45.559 [SSL] ossl_bio_cf_in_read(len=54) -> 54, err=0
CURLINFO_TEXT: 14.32.45.563 [SSL] cf_recv(len=900) -> 30, 0
CURLINFO_HEADER_IN: 14.32.45.567 200 PROT command successful.
CURLINFO_TEXT: 14.32.45.570 [TCP] send(len=34) -> 34, err=0
CURLINFO_TEXT: 14.32.45.574 [SSL] ossl_bio_cf_out_write(len=34) -> 34, err=0
CURLINFO_HEADER_OUT: 14.32.45.577 PWD
CURLINFO_TEXT: 14.32.45.581 [FTP] [PROT] -> [PWD]
CURLINFO_TEXT: 14.32.45.601 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.604 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.608 [TCP] recv(len=55) -> 55, err=0
CURLINFO_TEXT: 14.32.45.611 [SSL] ossl_bio_cf_in_read(len=55) -> 55, err=0
CURLINFO_TEXT: 14.32.45.614 [SSL] cf_recv(len=900) -> 31, 0
CURLINFO_HEADER_IN: 14.32.45.617 257 "/" is current directory.
CURLINFO_TEXT: 14.32.45.620 Entry path is '/'
CURLINFO_TEXT: 14.32.45.623 [FTP] [PWD] -> [STOP]
CURLINFO_TEXT: 14.32.45.626 [FTP] [STOP] protocol connect phase DONE
CURLINFO_TEXT: 14.32.45.629 Request has same path as previous transfer
CURLINFO_TEXT: 14.32.45.631 [FTP] [STOP] DO phase starts
CURLINFO_TEXT: 14.32.45.634 [TCP] send(len=35) -> 35, err=0
CURLINFO_TEXT: 14.32.45.637 [SSL] ossl_bio_cf_out_write(len=35) -> 35, err=0
CURLINFO_HEADER_OUT: 14.32.45.640 EPSV
CURLINFO_TEXT: 14.32.45.643 [FTP] [STOP] -> [PASV]
CURLINFO_TEXT: 14.32.45.645 Connect data stream passively
CURLINFO_TEXT: 14.32.45.648 [FTP] [PASV] perform, awaiting DATA connect
CURLINFO_TEXT: 14.32.45.665 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.668 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.671 [TCP] recv(len=72) -> 72, err=0
CURLINFO_TEXT: 14.32.45.674 [SSL] ossl_bio_cf_in_read(len=72) -> 72, err=0
CURLINFO_TEXT: 14.32.45.678 [SSL] cf_recv(len=900) -> 48, 0
CURLINFO_HEADER_IN: 14.32.45.682 229 Entering Extended Passive Mode (|||19954|)
CURLINFO_TEXT: 14.32.45.685 Hostname 52.29.67.170 was found in DNS cache
CURLINFO_TEXT: 14.32.45.688 Connecting to kamanaftps01.westeurope.cloudapp.azure.com (52.29.67.170) port 1080
CURLINFO_TEXT: 14.32.45.692 [FTP] [PASV] -> [STOP]
CURLINFO_TEXT: 14.32.45.695 [FTP] [STOP] DO phase is complete2
CURLINFO_TEXT: 14.32.45.699 Trying 52.29.67.170:1080...
CURLINFO_TEXT: 14.32.45.703 [TCP-1] cf_socket_open() -> 0, fd=1540
CURLINFO_TEXT: 14.32.45.706 [TCP-1] local address 0.0.0.0 port 56761...
CURLINFO_TEXT: 14.32.45.710 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.713 [TCP-1] adjust_pollset, !connected, POLLOUT fd=1540
CURLINFO_TEXT: 14.32.45.729 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.732 [TCP-1] adjust_pollset, !connected, POLLOUT fd=1540
CURLINFO_TEXT: 14.32.45.736 [TCP-1] connected
CURLINFO_TEXT: 14.32.45.739 Connected 2nd connection to 52.29.67.170 port 1080
CURLINFO_TEXT: 14.32.45.742 [TCP-1] send(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.745 [TCP-1] recv(len=2) -> -1, err=81
CURLINFO_TEXT: 14.32.45.749 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.765 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.768 [TCP-1] recv(len=2) -> 2, err=0
CURLINFO_TEXT: 14.32.45.771 [TCP-1] send(len=43) -> 43, err=0
CURLINFO_TEXT: 14.32.45.773 [TCP-1] recv(len=2) -> -1, err=81
CURLINFO_TEXT: 14.32.45.776 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.801 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.805 [TCP-1] recv(len=2) -> 2, err=0
CURLINFO_TEXT: 14.32.45.810 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.813 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.818 Host kamanaftps01.westeurope.cloudapp.azure.com:19954 was resolved.
CURLINFO_TEXT: 14.32.45.821 IPv6: (none)
CURLINFO_TEXT: 14.32.45.824 IPv4: 52.174.49.89
CURLINFO_TEXT: 14.32.45.827 SOCKS5 connect to 52.174.49.89:19954 (locally resolved)
CURLINFO_TEXT: 14.32.45.830 [TCP-1] send(len=10) -> 10, err=0
CURLINFO_TEXT: 14.32.45.832 [TCP-1] recv(len=10) -> -1, err=81
CURLINFO_TEXT: 14.32.45.835 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.861 [FTP] [STOP] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.865 [TCP-1] recv(len=10) -> 10, err=0
CURLINFO_TEXT: 14.32.45.869 SOCKS5 request granted.
CURLINFO_TEXT: 14.32.45.872 Connected 2nd connection to 52.29.67.170 port 1080
CURLINFO_TEXT: 14.32.45.876 [SSL-1] cf_connect()
CURLINFO_TEXT: 14.32.45.879 SSL reusing session ID
CURLINFO_TEXT: 14.32.45.883 [TCP-1] send(len=267) -> 267, err=0
CURLINFO_TEXT: 14.32.45.886 [SSL-1] ossl_bio_cf_out_write(len=267) -> 267, err=0
CURLINFO_TEXT: 14.32.45.890 TLSv1.2 (OUT), TLS handshake, Client hello (1):
CURLINFO_SSL_DATA_OUT: 14.32.45.893 �CURLINFO_TEXT: 14.32.45.897 [TCP-1] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.900 [SSL-1] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.904 [SSL-1] populate_x509_store, path=none, blob=0
CURLINFO_TEXT: 14.32.45.908 [SSL-1] cf_connect() -> 0, done=0
CURLINFO_TEXT: 14.32.45.911 [TCP] send(len=37) -> 37, err=0
CURLINFO_TEXT: 14.32.45.915 [SSL] ossl_bio_cf_out_write(len=37) -> 37, err=0
CURLINFO_HEADER_OUT: 14.32.45.918 TYPE I
CURLINFO_TEXT: 14.32.45.922 [FTP] [STOP] -> [STOR_TYPE]
CURLINFO_TEXT: 14.32.45.925 [FTP] [STOR_TYPE] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.928 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.45.941 [FTP] [STOR_TYPE] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.945 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.45.949 [SSL-1] cf_connect()
CURLINFO_TEXT: 14.32.45.952 [TCP-1] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.956 [SSL-1] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.45.959 [SSL-1] cf_connect() -> 0, done=0
CURLINFO_TEXT: 14.32.45.962 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.965 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.45.969 [TCP] recv(len=44) -> 44, err=0
CURLINFO_TEXT: 14.32.45.972 [SSL] ossl_bio_cf_in_read(len=44) -> 44, err=0
CURLINFO_TEXT: 14.32.45.976 [SSL] cf_recv(len=900) -> 20, 0
CURLINFO_HEADER_IN: 14.32.45.979 200 Type set to I.
CURLINFO_TEXT: 14.32.45.982 [TCP] send(len=96) -> 96, err=0
CURLINFO_TEXT: 14.32.45.985 [SSL] ossl_bio_cf_out_write(len=96) -> 96, err=0
CURLINFO_HEADER_OUT: 14.32.45.988 STOR upload-testfile-62b93b39-d523-47b5-89b9-f5d62c58f857.txt.tmp
CURLINFO_TEXT: 14.32.45.991 [FTP] [STOR_TYPE] -> [STOR]
CURLINFO_TEXT: 14.32.45.993 [FTP] [STOR] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.45.996 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.46.019 [FTP] [STOR] ftp_domore_getsock()
CURLINFO_TEXT: 14.32.46.022 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.46.025 [SSL-1] cf_connect()
CURLINFO_TEXT: 14.32.46.028 [TCP-1] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.031 [SSL-1] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.034 [TCP-1] recv(len=3359) -> 3359, err=0
CURLINFO_TEXT: 14.32.46.036 [SSL-1] ossl_bio_cf_in_read(len=3359) -> 3359, err=0
CURLINFO_TEXT: 14.32.46.039 TLSv1.2 (IN), TLS handshake, Server hello (2):
CURLINFO_SSL_DATA_IN: 14.32.46.042 �CURLINFO_TEXT: 14.32.46.045 TLSv1.2 (IN), TLS handshake, Certificate (11):
CURLINFO_SSL_DATA_IN: 14.32.46.047 �CURLINFO_TEXT: 14.32.46.050 TLSv1.2 (IN), TLS handshake, Server key exchange (12):
CURLINFO_SSL_DATA_IN: 14.32.46.053 CURLINFO_TEXT: 14.32.46.056 TLSv1.2 (IN), TLS handshake, Server finished (14):
CURLINFO_SSL_DATA_IN: 14.32.46.059 �CURLINFO_TEXT: 14.32.46.062 TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
CURLINFO_SSL_DATA_OUT: 14.32.46.065 �CURLINFO_TEXT: 14.32.46.069 TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_OUT: 14.32.46.071 �
CURLINFO_TEXT: 14.32.46.074 TLSv1.2 (OUT), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_OUT: 14.32.46.077 �CURLINFO_TEXT: 14.32.46.080 [TCP-1] send(len=93) -> 93, err=0
CURLINFO_TEXT: 14.32.46.083 [SSL-1] ossl_bio_cf_out_write(len=93) -> 93, err=0
CURLINFO_TEXT: 14.32.46.086 [TCP-1] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.46.088 [SSL-1] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.46.091 [SSL-1] cf_connect() -> 0, done=0
CURLINFO_TEXT: 14.32.46.093 [TCP] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.096 [SSL] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.098 [TCP] recv(len=78) -> 78, err=0
CURLINFO_TEXT: 14.32.46.101 [SSL] ossl_bio_cf_in_read(len=78) -> 78, err=0
CURLINFO_TEXT: 14.32.46.103 [SSL] cf_recv(len=900) -> 54, 0
CURLINFO_HEADER_IN: 14.32.46.106 125 Data connection already open; Transfer starting.
CURLINFO_TEXT: 14.32.46.109 [FTP] InitiateTransfer()
CURLINFO_TEXT: 14.32.46.112 [SSL-1] cf_connect()
CURLINFO_TEXT: 14.32.46.116 [TCP-1] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.119 [SSL-1] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.122 [TCP-1] recv(len=1) -> 1, err=0
CURLINFO_TEXT: 14.32.46.125 [SSL-1] ossl_bio_cf_in_read(len=1) -> 1, err=0
CURLINFO_TEXT: 14.32.46.128 TLSv1.2 (IN), TLS change cipher, Change cipher spec (1):
CURLINFO_SSL_DATA_IN: 14.32.46.131 �
CURLINFO_TEXT: 14.32.46.135 [TCP-1] recv(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.138 [SSL-1] ossl_bio_cf_in_read(len=5) -> 5, err=0
CURLINFO_TEXT: 14.32.46.141 [TCP-1] recv(len=40) -> 40, err=0
CURLINFO_TEXT: 14.32.46.145 [SSL-1] ossl_bio_cf_in_read(len=40) -> 40, err=0
CURLINFO_TEXT: 14.32.46.149 TLSv1.2 (IN), TLS handshake, Finished (20):
CURLINFO_SSL_DATA_IN: 14.32.46.152 �CURLINFO_TEXT: 14.32.46.155 [SSL-1] Added Session ID to cache for ftp://kamanaftps01.westeurope.cloudapp.azure.com:21 [server]
CURLINFO_TEXT: 14.32.46.158 SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 / [blank] / UNDEF
CURLINFO_TEXT: 14.32.46.162 Server certificate:
CURLINFO_TEXT: 14.32.46.165 subject: CN=kamanaftps01.westeurope.cloudapp.azure.com
CURLINFO_TEXT: 14.32.46.168 start date: Sep 12 05:59:33 2023 GMT
CURLINFO_TEXT: 14.32.46.171 expire date: Oct 13 05:59:33 2024 GMT
CURLINFO_TEXT: 14.32.46.173 subjectAltName: host "kamanaftps01.westeurope.cloudapp.azure.com" matched cert's "kamanaftps01.westeurope.cloudapp.azure.com"
CURLINFO_TEXT: 14.32.46.182 issuer: C=US; ST=Arizona; L=Scottsdale; O=GoDaddy.com, Inc.; OU=http://certs.godaddy.com/repository/; CN=Go Daddy Secure Certificate Authority - G2
CURLINFO_TEXT: 14.32.46.186 SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
CURLINFO_TEXT: 14.32.46.189 Certificate level 0: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_TEXT: 14.32.46.192 Certificate level 1: Public key type ? (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
CURLINFO_TEXT: 14.32.46.195 [SSL-1] cf_connect() -> 0, done=1
CURLINFO_TEXT: 14.32.46.198 [FTP] [STOR] -> [STOP]
CURLINFO_TEXT: 14.32.46.201 [TCP-1] send(len=95) -> 95, err=0
CURLINFO_TEXT: 14.32.46.204 [SSL-1] ossl_bio_cf_out_write(len=95) -> 95, err=0
CURLINFO_DATA_OUT: 14.32.46.207 This is a testfile created by the Utiliread integration test suite
CURLINFO_TEXT: 14.32.46.210 [TCP-1] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.46.213 [SSL-1] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.46.216 [SSL-1] SSL shutdown not sent, read -> -1
CURLINFO_TEXT: 14.32.46.219 [TCP-1] send(len=31) -> 31, err=0
CURLINFO_TEXT: 14.32.46.221 [SSL-1] ossl_bio_cf_out_write(len=31) -> 31, err=0
CURLINFO_TEXT: 14.32.46.224 TLSv1.2 (OUT), TLS alert, close notify (256):
CURLINFO_SSL_DATA_OUT: 14.32.46.227 �CURLINFO_TEXT: 14.32.46.230 [TCP-1] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.46.233 [SSL-1] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.46.237 [SSL-1] SSL shutdown read -> -1
CURLINFO_TEXT: 14.32.46.240 [SSL-1] SSL shutdown sent, want receive
CURLINFO_TEXT: 14.32.46.243 [SSL-1] cf_shutdown -> 0, done=0
CURLINFO_TEXT: 14.32.46.246 [SSL-1] shut down not done yet
CURLINFO_TEXT: 14.32.46.249 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.47.266 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.47.269 [TCP-1] recv(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.47.271 [SSL-1] ossl_bio_cf_in_read(len=5) -> -1, err=81
CURLINFO_TEXT: 14.32.47.273 [SSL-1] SSL shutdown read -> -1
CURLINFO_TEXT: 14.32.47.275 [SSL-1] SSL shutdown sent, want receive
CURLINFO_TEXT: 14.32.47.277 [SSL-1] cf_shutdown -> 0, done=0
CURLINFO_TEXT: 14.32.47.279 [SSL-1] shut down not done yet
CURLINFO_TEXT: 14.32.47.281 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.48.284 [SSL-1] adjust_pollset, POLLIN fd=1540
CURLINFO_TEXT: 14.32.48.287 SSL shutdown timeout
CURLINFO_TEXT: 14.32.48.288 [FTP] [STOP] closing DATA connection
CURLINFO_TEXT: 14.32.48.291 [TCP-1] cf_socket_close(1540)
CURLINFO_TEXT: 14.32.48.293 [TCP-1] destroy
CURLINFO_TEXT: 14.32.48.295 [FTP] [STOP] done, result=28
CURLINFO_TEXT: 14.32.48.297 closing connection #0
CURLINFO_TEXT: 14.32.48.299 [TCP] cf_socket_close(1560)
CURLINFO_TEXT: 14.32.48.301 [TCP] destroy

@icing
Copy link
Contributor

icing commented Sep 10, 2024

Thanks! This indeed shows that curl sends the TLS close-notify successfully, but the server just does not responds in the 2 seconds we allow for it. Then we time out.

@rmja rmja mentioned this issue Sep 10, 2024
Closed
icing added a commit to icing/curl that referenced this issue Sep 12, 2024
@icing
shutdown send, proceed normally on timeout
c35c038 
When ending an FTP upload, we shut down the connection gracefully,
since the server should be notified we had send all bytes. Mostly,
this is a NOP without TLS involved. With TLS, close-notify messages
should be exchanged.

As reported in curl#14843, not all servers seem to do that. Since it
is the server's responsiblity to check it has received everything,
we just log the timeout and proceed as if everything is fine.

In the receive direction, we still fail the transfer if the server
does not shut down its direction properly.
icing added a commit to icing/curl that referenced this issue Sep 20, 2024
@icing
shutdown send, proceed normally on timeout
9259cc0 
When ending an FTP upload, we shut down the connection gracefully,
since the server should be notified we had send all bytes. Mostly,
this is a NOP without TLS involved. With TLS, close-notify messages
should be exchanged.

As reported in curl#14843, not all servers seem to do that. Since it
is the server's responsiblity to check it has received everything,
we just log the timeout and proceed as if everything is fine.

In the receive direction, we still fail the transfer if the server
does not shut down its direction properly.
@bagder bagder closed this as completed in b2331f3 Sep 20, 2024
@gold22 gold22 mentioned this issue Oct 15, 2024
Open
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@icing icing

Labels
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@icing @rmja