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  Could not connect to host in      0  internal function   SoapClient- gt   doRequest   lt  xml version        http           1  0

User · Answer

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- gt   call  LineStopQueryJson  array  Parameters    gt   params     catch SoapFault  e       print r  client

User · Answer

The host is either down or very slow to respond  If it s slow to respond  you can try increasing the timeout via the connection timeout option or via the default socket timeout setting and see if that reduces the failures   http   www php net manual en soapclient soapclient php  http   www php net manual en filesystem configuration php ini default-socket-timeout  You can also include error handling as zanlok pointed out to retry a few times  If you have users actually waiting on these SOAP calls then you ll want to queue them up and process them in the background and notify the user when they re finished

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If the connection is through SSL  could be a problem of server instead of client  it is my case    In PHP versions greater than 5 6 and 7  is important to check the CipherSuite used in server certificate  There is a full list of ciphers allowed by this versions and a full list of ciphers that do not in this web link  https   wiki mozilla org Security Server Side TLS Recommended Ciphersuite  If the cipher used is not allowed  it is a deprecated algorithm   SoapClient receives  Could not connect to host  and there is no more trace about it   The cipher used can be checked by clients like SoapUI in the section of  SSL Info   for example   There is no thread forum treating about this in internet   Check this out  too  http   php net manual en migration56 openssl php

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Just to help other people who encounter this error  the url in  lt soap address location  https   some url   gt  had an invalid certificate and caused the error

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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

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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

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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- gt soapClient   new  SoapClient WS URL    this- gt soapClient- gt   setLocation WS URL

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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

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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

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Version check helped me OpenSSL  OpenSSL 1 0 1f not supported TSLv 1 2   Check version and compatibility with TSLv 1 2 on github openssl openssl   And regenerate your certificate with new openssl  openssl pkcs12 -in path p12 -out newfile pem   P S I don   t know what they were minus  but this solution will really help

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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

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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    lt soap address location  http      gt    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

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In our case  it was a Ciphers negotiation problem  We were getting this error randomly  We solved our problem by forcing a Cipher like this    soapClient   new SoapClient   http   example com soap asmx wsdl       array            stream context    gt  stream context create               array                    ssl    gt  array                        ciphers   gt  AES256-SHA                                                       Looks like PHP wasn t negotiating the same Ciphers at each service call

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For those who struggled the same as me with laravel artisan console command that makes a lot of requests to same wsdl of external soap server and then after some time fails with Could not connect to host error   The problem was because I was creating new SoapClient instance each time before request was made  Do not do that  Create it once and make each request from the same client   Hope it helps

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In my case service address in wsdl is wrong   My wsdl url is   https   myweb com 4460 xxx webservices services ABC ABC wsdl  But service address in that xml result is    lt soap address location  http   myweb com 8080 xxx webservices services ABC ABC    gt    I just save that xml to local file and change service address to    lt soap address location  https   myweb com 4460 xxx webservices services ABC ABC    gt    Good luck

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The problem was solved The problem is the cache  ini set  soap wsdl cache enabled  0   ini set  soap wsdl cache ttl  0

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It seems the error SoapFault exception  Could not connect to host can be caused be several different things  In my cased it wasn t caused by proxy  firewall or DNS  I actually had a SOAP connection from the same machine working using nusoap without any special setup    Finally I found that it was caused by an invalid pem file which I referenced in the local cert option in my SoapClient contructor   Solution  When I removed the certificate chain from the pem file  so it only contained certificate and private key  the SOAP calls started going through

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In my case  disabled SELINUX allow PHP to call my WebService  I run PHP in FPM with Apache2 SELinux status     sestatus  Disable SELinux   setenforce 0 Enable SELinux     setenforce 1  Permanent disable   edit this file  etc selinux config

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I finally found the reason its becuse of the library can t find a CA bundle on your system  PHP    v5 6 automatically sets verify peer to true  by default  However  not all systems have a known CA bundle on disk     You can try one of these procedures   1 If you have a CA file on your system  set openssl cafile or curl cainfo in your php ini to the path of your CA file   2 Manually specify your SSL CA file location  curl setopt  ch  CURLOPT SSL VERIFYPEER  true     curl setopt  cHandler  CURLOPT CAINFO   path-of-your-ca-file     3 disabled verify peer  curl setopt  ch  CURLOPT SSL VERIFYPEER  false

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In my case the host requires TLS 1 2 so needed to enforce using the crypto method ssl param    client   new SoapClient  wsdl      array              location    gt   location              keep alive    gt  false              stream context    gt  stream context create                    ssl    gt                         crypto method    gt   STREAM CRYPTO METHOD TLSv1 2 CLIENT                                                trace    gt  1     used for debug

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With me  this problem in base Address in app config of WCF service  When I ve used    lt baseAddresses gt  lt add baseAddress  http   127 0 0 1 9022 Service GatewayService   gt   lt  baseAddresses gt    it s ok if use  net to connect with public ip or domain   But when use PHP s SoapClient to connect to  http    online ip  9022 Service GatewayService   it s throw exception  Coulod not connect to host   I ve changed baseAddress to  online ip  9022 and everything s ok

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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

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This work for me   opts   array     ssl    gt  array  verify peer    gt  false   verify peer name    gt  false      if   isset  this- gt soap client        this- gt soap client   new SoapClient  this- gt WSDL  array       soap version      gt   this- gt soap version       location          gt   this- gt URL       trace             gt  1       exceptions        gt  0       stream context    gt  stream context create  opts

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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

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For me it was a certificate problem  Following worked for me   context   stream context create        ssl    gt               set some SSL TLS specific options          verify peer    gt  false           verify peer name    gt  false           allow self signed    gt  true             client    new SoapClient null         location    gt   https              uri    gt               stream context    gt   context

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Another possible reason for this error is when you are creating and keeping too many connections open  SoapClient sends the HTTP Header Connection  Keep-Alive by default  through the constructor option keep alive   But if you create a new SoapClient instance for every call in your queue  this will create and keep-open a new connection everytime  If the calls are executed fast enough  you will eventually run into a limit of 1000 open connections or so and this results in SoapFault  Could not connect to host  So make sure you create the SoapClient once and reuse it for subsequent calls

User · Answer

For me  this was a problem in the httpd service  Fedora 24   A simple restart did the trick   sudo service httpd restart

[php] SoapFault exception: Could not connect to host

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