php SoapFault 异常：[HTTP] 获取 http 标头时出错
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SoapFault exception: [HTTP] Error Fetching http headers
提问by Syed Tayyab Ali
I am getting following exception in my php page.
我的 php 页面出现以下异常。
SoapFault exception: [HTTP] Error Fetching http headers
SoapFault 异常：[HTTP] 获取 http 标头时出错
I read couple of article and found that default_socket_timeout needs configuration. so I set it as follow. default_socket_timeout = 480
我阅读了几篇文章，发现 default_socket_timeout 需要配置。所以我设置如下。default_socket_timeout = 480
I am still getting same error. Can someone help me out?
我仍然遇到同样的错误。有人可以帮我吗？
采纳答案by Syed Tayyab Ali
One of my process within web service was taking long time to execute. Therefore I was getting soapfault exeception.
我在 Web 服务中的一个过程需要很长时间才能执行。因此，我收到了肥皂错误异常。
回答by HNygard
I have been getting Error fetching http headersfor two reasons:
我一直有Error fetching http headers两个原因：
- The server takes to long time to answer.
- The server does not support
Keep-Aliveconnections (which my answer covers).
- 服务器需要很长时间才能回答。
- 服务器不支持
Keep-Alive连接（我的回答涵盖了）。
PHP will always try to use a persistent connection to the web service by sending the Connection: Keep-AliveHTTP header. If the server always closes the connection and has not done so (PHP has not received EOF), you can get Error fetching http headerswhen PHP tries to reuse the connection that is already closed on the server side.
PHP 将始终尝试通过发送Connection: Keep-AliveHTTP 标头来使用与 Web 服务的持久连接。如果服务器总是关闭连接并且没有这样做（PHP 没有收到EOF），则您可以Error fetching http headers在 PHP 尝试重用服务器端已经关闭的连接时获取。
Note:this scenario will only happen if the same SoapClientobject sends more than one request and with a high frequency. Sending Connection: closeHTTP header along with the first request would have fixed this.
注意：这种情况只会发生在同一个SoapClient对象以高频率发送多个请求的情况下。将Connection: closeHTTP 标头与第一个请求一起发送可以解决这个问题。
In PHP version 5.3.5 (currently delivered with Ubuntu) setting the HTTP header Connection: Closeis not supported by SoapClient. One should be able to send in the HTTP header in a stream context (using the $option- key stream_contextas argument to SoapClient), but SoapClientdoes not support changing the Connection header(Update:This bug was solvedin PHP version 5.3.11).
在 PHP 版本 5.3.5（当前随 Ubuntu 一起交付）中Connection: Close，SoapClient 不支持HTTP 标头设置。应该能够在流上下文中发送 HTTP 标头（使用$option- 键stream_context作为参数SoapClient），但SoapClient不支持更改连接标头（更新：此错误已在 PHP 5.3.11 版中解决）。
An other solution is to implement your own __doRequest(). On the link provided, a guy uses Curlto send the request. This will make your PHP application dependent on Curl. The implementation is also missing functionality like saving request/response headers.
另一种解决方案是实现您自己的__doRequest(). 在提供的链接上，一个人Curl用来发送请求。这将使您的 PHP 应用程序依赖于Curl. 该实现还缺少保存请求/响应标头等功能。
A third solution is to just close the connection just after the response is received. This can be done by setting SoapClients attribute httpsocketto NULLin __doRequest(), __call()or __soapCall(). Example with __call():
第三种解决方案是在收到响应后立即关闭连接。这可以通过设置SoapClients属性来完成httpsocket对NULL中__doRequest()，__call()或__soapCall()。示例__call()：
class MySoapClient extends SoapClient {
function __call ($function_name , $arguments) {
$response = parent::__call ($function_name , $arguments);
$this->httpsocket = NULL;
return $response;
}
}
回答by MagentoMan
I had the same issue and tried the following by disabling keep_alive.
我遇到了同样的问题，并通过禁用keep_alive.
$api_proxy = new SoapClient($api_url, array('trace' => true, 'keep_alive' => false));
However, that didn't work for me. What worked worked for me was disabling the SOAP cache. It appears to have been caching the wrong requests and after disabling I actually noticed my requests were executing faster.
然而，这对我不起作用。对我有用的是禁用 SOAP 缓存。它似乎缓存了错误的请求，在禁用后我实际上注意到我的请求执行得更快。
On a linux server you can find this in your /etc/php.inifile.
在 linux 服务器上，您可以在/etc/php.ini文件中找到它。
Look for soap.wsdl_cache_enabled=1and change it to soap.wsdl_cache_enabled=0.
查找soap.wsdl_cache_enabled=1并将其更改为soap.wsdl_cache_enabled=0.
Don't forget to reload apache.
service httpd reload
不要忘记重新加载apache。
service httpd reload
