我不确定该怎么做。我正在编写的 SOAP 服务的规范表明它需要在响应请求的请求响应之前发回确认消息。

这在 PHP 中是如何完成的？我没有看到如何执行此操作的示例。

来自需求文档:

One acknowledgement message is sent by Integration Partner to Vendor for every SubmitInv message request. A single acknowledgement message is also sent by Vendor to the Integration Partner from every RequestInv message respons

这不是标准的 TCP 确认响应。这是一个自定义 SOAP 格式的响应，表示他们已收到请求。 请参见下面的示例。

询问供应商后:

They claim that it is a legacy system and it was written to process in that flow. They cannot, at this time, change it. I told him that in 20+ yrs programming, I have NEVER seen any SOAP system require an ACK. He claimed that it had to do with having to "wait" for the responses. Apparently they don't understand how to properly handle stateless processing.

我已经尝试使用 FoxVSky 下面概述的 PHP 输出缓冲函数来完成它，它在 SOAP 事务中不起作用。 此外，PHP 内置的标准 SOAP 库和 Zend SOAP 库都没有执行此操作的功能。

示例:

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" 
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
               xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <soap:Body>
    <PAddRs>
      <RqUID>f11958c8-3fde-42ca-bd94-94fdfca316ef</RqUID>
      <PKey>46dba062-2105-4851-831f-a1d364741329</PKey>
      <AppStatus>
        <AppStatusCode>Accept</AppStatusCode>
      </AppStatus>
    </PAddRs>
  </soap:Body>
</soap:Envelope>

最佳答案

好的，我已经在我的 SOAP 服务中实现了确认消息传递，这是从客户端调用它的方式:

<?php
require_once __DIR__ . '/vendor/autoload.php';
$options = array();
$options['cache_wsdl'] = WSDL_CACHE_NONE;
$options['soap_version'] = SOAP_1_2;
$client = new Zend\Soap\Client("http://localhost/soap/server.php?wsdl", $options);

try {
    // Currently loading example request
    $xml = simplexml_load_file('RequestExample.xml');
    $t_xml = new DOMDocument();
    $t_xml->loadXML($xml->asXML());
    $xml = $t_xml->saveXML($t_xml->documentElement);
    $response = $client->ReqInv($xml);
} catch (Exception $e) {
    $response = 'Exception: '. $e. "\n"; 
}
echo $response;    

还有我的服务:

<?php
require_once __DIR__ . '/vendor/autoload.php';
require(__DIR__ . '/PTResp.php');

use Zend\Soap\AutoDiscover;
use Zend\Soap\Server;
use Zend\Soap\Wsdl;

class PT {
    /**
     * function ReqInv
     * Function to return the inventory for the passed request.
     * 
     *  @param string $request 
     *  @return string
     */
    function ReqInv($request) {
        $pt = new PTResp($request);
        return $pt->toString();
    }   
}

if (isset($_GET['wsdl'])) {
    $wsdl = new AutoDiscover();
    $wsdl->setUri('http://localhost/soap/server.php');
    $wsdl->setClass('PT');
    $wsdl->handle();
} else {
    $server = new Zend\Soap\Server('http://localhost/soap/server.php?wsdl');
    $server->setClass('PT');
    $server->setEncoding('ISO-8859-1');
    $server->handle();
}

还有我的类(class)(在 PTResp.php 中):

class PT {

    function __construct($xml) {
        $this->m = new Mustache_Engine;
        $this->xml = @simplexml_load_string($xml);
        $this->xml->registerXPathNamespace(<my namespace info>);
        $this->SendAck();
        $this->BuildResponse();
    } // function __construct

    /*
    * This is the function that is actually called to return the response to the client.
    */
    function toString() {
        $domxml = new DOMDocument('1.0');
        $domxml->preserveWhiteSpace = false;
        $domxml->formatOutput = true;
        $domxml->loadXML($this->response);
        $this->response = $domxml->saveXML($domxml->documentElement);
        return $this->response;
    } // function toString    

    function SendAck() {        
        $this->Status = "Accept";
        $xml_post_string = $this->m->render(
        '<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
            <soap:Body>
                <ProcurementAddRs xmlns=MyNamespaceInfo">
                    <RqUID>{{RqUID}}</RqUID>
                    <PKey>{{PKey}}</PKey>
                    <ApplicationStatus>
                        <ApplicationStatusCode>{{Status}}</ApplicationStatusCode>
                    </ApplicationStatus>
                </ProcurementAddRs>
            </soap:Body>
        </soap:Envelope>', array("RqUID" =>$this->RqUID, "PKey"=>$this->PKey, "Status"=>$this->Status));
        $url = 'http://localhost/soap/gotit.php'; // in this test, it writes the response to a file. I will be sending it to the endpoint from here
        $this->curl_post_async($url, $xml_post_string);
    } // function SendAck

    function curl_post_async($url, $post_string){
        $parts=parse_url($url);

        $fp = fsockopen($parts['host'],
            isset($parts['port'])?$parts['port']:80,
            $errno, $errstr, 30);

        $out = "POST ".$parts['path']." HTTP/1.1\r\n";
        $out.= "Host: ".$parts['host']."\r\n";
        $out.= "Content-Type: text/xml\r\n";
        $out.= "Content-Length: ".strlen($post_string)."\r\n";
        $out.= "Connection: Close\r\n\r\n";
        if (isset($post_string)) $out.= $post_string;
        fwrite($fp, $out);
        fclose($fp);
    } // function curl_post_async  

    function BuildResponse() {
        $this-response = "<XML response that is built goes here>";
    }

}

关于php - 异步 PHP SOAP 服务器在响应之前发送确认消息？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50255371/