SoapFault exception: Could not connect to host

Question

Sometimes fail to call the web service.

This problem happens all the time.

What could be the problem?

Error:
    SoapFault exception: [HTTP]          


        

Answer 1

I had a bad php.ini configuration. Verify the path and the certificate validity...

[openssl]
openssl.cafile = "C:/good/phpath/ca-bundle.crt"

Because my new \SoapClient($wsdl) was https !

Answer 2

If you have a firewall on your server, make sure to open the port used by SOAP.

In my case, I had to open the port 1664.

iptables -t filter -A INPUT -p tcp --dport 1664 -j ACCEPT
iptables -t filter -A OUTPUT -p tcp --dport 1664 -j ACCEPT

Answer 3

Just to help other people who encounter this error, the url in <soap:address location="https://some.url"/> had an invalid certificate and caused the error.

Answer 4

In my case it worked after the connection to the wsdl, use the function __setLocation() to define the location again because the call fails with the error:

Could not connect to the host

This happens if the WSDL is different to the one specified in SoapClient::SoapClient.

Answer 5

I hit this issue myself and after much digging I eventually found this bug for ubuntu:

https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/965371

specifically

https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/965371/comments/62

openssl s_client -connect site.tld:443 failed however openssl s_client -tls1 -connect site.tld:443 gave success. In my particular case part of the output included New, TLSv1/SSLv3, Cipher is RC4-MD5 so I set the php context ssl/cipher value appropriately.

Answer 6

For me it was a DNS issue. My VPS's nameservers crapped out, so I switched to Google's by editing my /etc/resolv.conf to be: nameserver 8.8.8.8 nameserver 8.8.4.4