致命错误：未捕获的SoapFault异常：[HTTP]无法连接到主机

Question

自2014年以来，我拥有每天运行的PHP Web服务。平均而言，它每天发送5000条消息。由于我每个月有1到2个这样的错误，但最近10天每天的错误数量增加到10个，因此消息数量略有增加到5200，并且我至少有2年没有做任何更改。我公司和正在接收这些消息的公司中的同事检查了网络中的错误，找不到任何错误。 上个月，我的脚本发送了超过50000条消息，没有错误，但是现在它在1000条以下消息后停止。 我得到的错误是：

Fatal error: Uncaught SoapFault exception: [HTTP] Could not connect to host in C:\xampp\htdocs\NIAS\BeSimpleSoap-master\
src\BeSimple\SoapClient\SoapClient.php:146
Stack trace:
#0 C:\xampp\htdocs\NIAS\BeSimpleSoap-master\src\BeSimple\SoapClient\SoapClient.php(203): BeSimple\SoapClient\SoapClient-
>__doHttpRequest(Object(BeSimple\SoapClient\SoapRequest))
#1 C:\xampp\htdocs\NIAS\BeSimpleSoap-master\src\BeSimple\SoapClient\SoapClient.php(183): BeSimple\SoapClient\SoapClient-
>__doRequest2(Object(BeSimple\SoapClient\SoapRequest))
#2 [internal function]: BeSimple\SoapClient\SoapClient->__doRequest('<?xml version="...', 'https://cis.api...', 'http://
www.apis...', 1, 0)
#3 C:\xampp\htdocs\NIAS\HZZO-OKP-SOAP.php(475): SoapClient->__call('sendMessage', Array)
#4 C:\xampp\htdocs\NIAS\HZZO-OKP-SOAP.php(475): BeSimple\SoapClient\SoapClient->sendMessage(Array)
#5 C:\xampp\htdocs\NIAS\HZZO-OKP-SOAP.php(403): Send_SOAP_mssg('Po\xC5\xA1tovana/i,<b...', '09596640-cbe0-4...', 18, 2,
'1111111', 'HR', 'Obavijest o sta...', 'https://cis.api. in C:\xampp\htdocs\NIAS\BeSimpleSoap-master\src\BeSimple\So
apClient\SoapClient.php on line 146 

部分脚本如下：

function __autoload($class_name) {
    include "C:\\xampp\\htdocs\\NIAS\\BeSimpleSoap-master\\src\\" .$class_name . '.php';
}

ini_set('memory_limit', '-1');
ini_set('max_execution_time', 0);


//Code for accessing remote protected OIB list.
$handle = curl_init();
$options = array( 
    CURLOPT_RETURNTRANSFER => TRUE,
    CURLOPT_SSL_VERIFYPEER => FALSE,
    CURLOPT_CAINFO         => $FINA_APIS_cert,
    CURLOPT_VERBOSE        => TRUE,
    CURLOPT_SSL_VERIFYHOST => FALSE,
    CURLOPT_SSLCERTPASSWD  => $cert_password ,
    CURLOPT_SSLCERT        => $cert_path,
    CURLOPT_SSLKEY         => $key_path,
    CURLOPT_SSLVERSION     => 4,
    CURLOPT_URL            => $OIB_URL
);

curl_setopt_array($handle, $options);

$OIB_File=(string)curl_exec($handle); //String of OIBs
if (curl_errno($handle)) {
  echo 'Error: ' . curl_error($handle);
}
curl_close($handle);    


$OIB_row = str_getcsv($OIB_File, "\n",","); //parse the rows
foreach($OIB_row as $Row){
    $Row = str_getcsv($Row, ","); //parse the items in rows 
    $Country_code = $Row[0];
    $OIB_array[$Row[1]] = TRUE;
}


// Open connection with MySQL Database
$link_mysql = mysqli_connect("localhost", "****", "****", "okp_php");

$rows_lines="";
$flag_split_saldo=1;

$input_file=scandir($full_path);//Scanning directory for files

foreach ($input_file as $input_name){
    if($input_name=="." || $input_name==".." || $input_name=="OIB")
        continue;

    $lines = file($full_path . $input_name);


    foreach($lines as $line){

        $line_row = explode(':', $line);
        $security_level=2;

        if(substr($input_name,0,7)=="naknade"){
            $OIB=$line_row[9];
            if (!isset($OIB_array[$OIB]))//searching for OIB in OIB list
                continue;

            $title="Obavijest o obračunatoj naknadi koju isplaćuje HZZO";
            if(empty($line_row[6])){
                $IBAN_tmp=$line_row[7].$line_row[8].'172700';
                $IBAN=IBAN_generator($IBAN_tmp);
            }
            else{
                $IBAN=$line_row[6];
            }

            $compensation = number_format($line_row[2],2);

            $TipPoruke=14;
            $UUID=gen_uuid();
            $security_level=2;
            $rows_lines ="Poštovana/i,<br />na Vaš račun " . $IBAN . " upućen je iznos od " . $compensation ." kuna za \"" . $line_row[5] . "\" za " . $line_row[0] . ". mjesec " . $line_row[1] . ". godine.<br /><br />Srdačan pozdrav,<br />Vaš HZZO";
        }

        else{
            continue;
        }


        Send_SOAP_mssg($rows_lines,$UUID,$TipPoruke,$security_level,$OIB,$Country_code,$title,$SERVICE_TEST,$SOAP_cert,$NAMESPACE_URI,$cert_password,$Attachment_file,$link_mysql);
        $Attachment_file="";
    }

    //Code for parsing only one saldo Dopunskog file
    if (substr($input_name,0,12)=="sal_web_pla_"){
        copy_file($flag_split_saldo,$full_path,$input_name,$destination);
        $flag_split_saldo=0;
    }
    else
    {
        $flag_split_saldo=1;
        copy_file($flag_split_saldo,$full_path,$input_name,$destination);
    }

}
//Close MySQL connection
mysqli_close($link_mysql); 
function Send_SOAP_mssg($rows_lines,$UUID,$TipPoruke,$security_level,$OIB,$Country_code,$title,$SERVICE_TEST,$SOAP_cert,$NAMESPACE_URI,$cert_password,$Attachment_file,$link_mysql){
        $date_time = date("c");
        $encoded_msg=base64_encode($rows_lines);
        $encodded = new SoapVar("<tns:KorisnickiPretinacPoruka xmlns:tns='http://apis-it.hr/umu/2013/types/kp'
                    xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
                    xsi:schemaLocation='http://apis-it.hr/umu/2013/types/kp ../schema/KorisnickiPretinacSchema.xsd '>
                    <tns:Zaglavlje>
                        <tns:IdPosiljatelja>196</tns:IdPosiljatelja>
                        <tns:TipPoruke>$TipPoruke</tns:TipPoruke>
                        <tns:IdPoruke>$UUID</tns:IdPoruke>
                        <tns:DatumVrijemeSlanja>$date_time</tns:DatumVrijemeSlanja>
                        <tns:RazinaSigurnosti>$security_level</tns:RazinaSigurnosti>
                    </tns:Zaglavlje>
                    <tns:Poruka>
                        <tns:PinPrimatelja>$OIB</tns:PinPrimatelja>
                        <tns:OznakaDrzave>$Country_code</tns:OznakaDrzave>
                        <tns:Predmet>$title</tns:Predmet>
                        <tns:Sadrzaj>$encoded_msg</tns:Sadrzaj>
                    </tns:Poruka>
                    $Attachment_file
                    </tns:KorisnickiPretinacPoruka>", XSD_ANYXML); 

            $par_envelope=array( "GsbEnvelope" =>  
                array( "MessageHeader" => 
                    array("SenderId" => "24",
                        "ServiceId" => "123",
                        "MessageId" => $UUID,
                        "SenderTimeStamp" => $date_time),
                        "Content" => array("MimeType" =>"application/xml","Data" =>array("any"=>$encodded,"encoding"=>"EMBEDDED"))));


            $par_WSDL=array("trace"=>TRUE,
                "exceptions"=>TRUE,
                'location'=>$SERVICE_TEST,
                "local_cert" =>$SOAP_cert,
                'uri'=>$NAMESPACE_URI,
                "passphrase"=>$cert_password,
                "connection_timeout" => 60);

            $client = new BeSimple\SoapClient\SoapClient("GSBService.wsdl",$par_WSDL);

            $result=$client->sendMessage($par_envelope);

            //Default error code A000 == No error
            $Error_CodeK="A000";
            $Error_CodeM="A000";
            if(!empty($result->Errors)){
                $Error_CodeM=$result->Errors->Error->ErrorCode;
            }

            print_r("<p>Request :".htmlspecialchars($client->__getLastRequest()) ."</p>");
            print_r("<p>Response:".htmlspecialchars($xml=$client->__getLastResponse())."</p>");

            $doc = new DOMDocument();
            $doc->loadXML( $xml );

            $SOAPRequest = $doc->getElementsByTagName( "SifraGreske" );
                if($SOAPRequest->length!=0 || $Error_CodeM[0]!="A"){
                    if($SOAPRequest->length!=0)
                        $Error_CodeK=$SOAPRequest->item(0)->nodeValue;
                    $GsbId=gen_uuid();
                    $ReceiverTimeStamp=date("c");
                }
                else 
                {
                    $SOAPRequest = $doc->getElementsByTagName( "GsbId" );
                    $GsbId = $SOAPRequest->item(0)->nodeValue;
                    $SOAPRequest = $doc->getElementsByTagName( "ReplyReceivingTimeStamp" );
                    $ReceiverTimeStamp=$SOAPRequest->item(0)->nodeValue;
                }

            //Inserting errors and logins into MySQL
            error_handling_logging($UUID,$GsbId,$ReceiverTimeStamp,$OIB,$rows_lines,$Error_CodeK,$Error_CodeM,$date_time,$link_mysql);

}