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

For me, this was a problem in the httpd service (Fedora 24). A simple restart did the trick:

sudo service httpd restart

Answer 2

A misconfigured service leaves the default namespace with tempuri.org

This means the connection to the wsdl will work, but the function call will fail.

Stacktrace:

SoapClient->__doRequest('http://example.com...', 'http://tempuri.org....', 2, 0)

To remediate this, you must explicitly set the location using __setLocation()

$this->soapClient = new \SoapClient(WS_URL);
$this->soapClient->__setLocation(WS_URL);

Answer 3

That most likely refers to a connection issue. It could be either that your internet connection was down, or the web service you are trying to use was down. I suggest using this service to see if the web service is online or not: http://downforeveryoneorjustme.com/

Answer 4

I am adding my comment for completeness, as the solutions listed here did not help me. On PHP 5.6, SoapClient makes the first call to the specified WSDL URL in SoapClient::SoapClient and after connecting to it and receiving the result, it tries to connect to the WSDL specified in the result in:

<soap:address location="http://"/>

And the call fails with error Could not connect to host if the WSDL is different than the one you specified in SoapClient::SoapClient and is unreachable (my case was SoapUI using http://host.local/).

The behaviour in PHP 5.4 is different and it always uses the WSDL in SoapClient::SoapClient.

Answer 5

there is a soap config section in your php.ini file, which control the wsdl access cache, may be shown as:

[soap] 
; Enables or disables WSDL caching feature. 
soap.wsdl_cache_enabled=1 ; 
Sets the directory name where SOAP extension will put cache files. 
soap.wsdl_cache_dir="/tmp" 
; (time to live) Sets the number of second while cached file will be used ; instead of original one.  
soap.wsdl_cache_ttl=86400

if wsdl file cache is enabled, it may cause this problem when changing wsdl URI in php code. in this example, you can just delete file start with wsdl- under /tmp directory. or you just set soap.wsdl_cache_enabled=0; and soap.wsdl_cache_ttl=0; PHP will fetch the wsdl file every-time you visit the page.

Answer 6

if ujava's solution can't help you,you can try to use try/catch to catch this fatal,this works fine on me.

try{
    $res = $client->__call('LineStopQueryJson',array('Parameters' => $params));
}catch(SoapFault $e){
    print_r($client);
}