SSL_ERROR_SYSCALL in connection to api.telegram.org:443

Hi,

I would like help to solve an error related to cURL x Telegram:

# cURL version:
root_at_zabbix-server:/# curl -V
*curl 7.67.0* (x86_64-pc-linux-gnu) libcurl/7.67.0 OpenSSL/1.0.2g
zlib/1.2.11
Release-Date: 2019-11-06
Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp
smb smbs smtp smtps telnet tftp
Features: AsynchDNS HTTPS-proxy IPv6 Largefile libz NTLM NTLM_WB SSL
TLS-SRP UnixSockets

# Linux version:
root_at_zabbix-server:/# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: *Ubuntu 16.04.6 LTS*
Release: 16.04
Codename: xenial

==================

When I try curl -v -I https://api.telegram.org:

root@zabbix-server:/# curl -v -I https://api.telegram.org
* Trying 149.154.167.220:443...
* TCP_NODELAY set
* Trying 2001:67c:4e8:f004::9:443...
* TCP_NODELAY set
* Immediate connect fail for 2001:67c:4e8:f004::9: Cannot assign requested
address
* Connected to api.telegram.org (149.154.167.220) port 443 (#0)
* ALPN, offering http/1.1
* Cipher selection:
ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: none
* TLSv1.2 (OUT), TLS header, Certificate Status (22):
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to
api.telegram.org:443
* Closing connection 0
curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to
api.telegram.org:443

=================

cURL gives me *SSL_ERROR_SYSCALL* error.

If I test curl -v -I https://www.telegram.org, everything seems ok.

Could you help me solve this? Thanks

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Received on 2019-11-14