Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Table of Contents

Authentication

Basic Authentication

Default Client Transport

Prior to Apache CXF 3.6.0 / 4.0.1, the default HTTP client transport was URLConnectionHTTPConduit, that is built on top of java.net.HttpURLConnection / javax.net.ssl.HttpsURLConnection (JDK standard library). Past these releases, the default HTTP client transport has become HttpClientHTTPConduit that is using java.net.http.HttpClient under the hood (see please JEP 321: HTTP Client).


Warning
The java.net.http.HttpClient is reported to be considerably slower than java.net.HttpURLConnection (see please https://bugs.openjdk.org/browse/JDK-8277519), so there is an option to revert the default to URLConnectionHTTPConduit by setting "force.urlconnection.http.conduit" contextual property to true  .

Authentication

Basic Authentication

Code Block
xml
xml
 <conduit name="{http://example.com/}HelloWorldServicePort.http-conduit"
   xmlns:sec="http://cxf.apache.org/configuration/security"
   xmlns="http://cxf.apache.org/transports/http/configuration">
   <authorization>
      <sec:UserName>myuser</sec:UserName>
      
Code Block
xmlxml

 <conduit name="{http://example.com/}HelloWorldServicePort.http-conduit"
   xmlns:sec="http://cxf.apache.org/configuration/security"
   xmlns="http://cxf.apache.org/transports/http/configuration">
   <authorization>
      <sec:UserName>myuser</sec:UserName>
      <sec:Password>mypasswd</sec:Password>
      <sec:AuthorizationType>Basic</sec:AuthorizationType>
   </authorization>
 </conduit>

...

The file should contain:

Code Block

CXFClient {
    com.sun.security.auth.module.Krb5LoginModule required client=TRUE useTicketCache=true;
};

...

Code Block
xml
xml
titleHTTP conduit configuration for spnego with single sign on

 ...
 <conduit name="{http://example.com/}HelloWorldServicePort.http-conduit"
   xmlns="http://cxf.apache.org/transports/http/configuration">
   <authorization>
      <AuthorizationType>Negotiate</AuthorizationType>
      <Authorization>CXFClient</Authorization>
   </authorization>
 </conduit>
 ...

...

Code Block
xml
xml
titleSwitching to Kerberos OID instead of Spnego

 ...
 <jaxws:client>
  <jaxws:properties>
   <entry key="auth.spnego.useKerberosOid" value="true"/>
  </jaxws:properties> 
 </jaxws:client>
 ...

...

Code Block
xml
xml
titleHTTP conduit configuration for spnego with single sign on

 ...
 <conduit name="{http://example.com/}HelloWorldServicePort.http-conduit"
   xmlns="http://cxf.apache.org/transports/http/configuration">
   <authorization>
      <AuthorizationType>Negotiate</AuthorizationType>
   </authorization>
 </conduit>
 ...

...

On Java 5, you need a library that will augment the HttpURLConnection to do it. See: http://jcifs.samba.org/src/docs/httpclient.htmlImage Removed Note: jcifs is LGPL licensed, not Apache licensed.

Next, you need to configure jcifs to use the correct domains, wins servers, etc... Notice that the
bit which sets the username/password to use for NTLM is commented out. If credentials are
missing jcifs will use the underlying NT credentials.

Code Block
java
java

//Set the jcifs properties
jcifs.Config.setProperty("jcifs.smb.client.domain", "ben.com");
jcifs.Config.setProperty("jcifs.netbios.wins", "xxx.xxx.xxx.xxx");
jcifs.Config.setProperty("jcifs.smb.client.soTimeout", "300000"); // 5 minutes
jcifs.Config.setProperty("jcifs.netbios.cachePolicy", "1200"); // 20 minutes
//jcifs.Config.setProperty("jcifs.smb.client.username", "myNTLogin");
//jcifs.Config.setProperty("jcifs.smb.client.password", "secret");

//Register the jcifs URL handler to enable NTLM
jcifs.Config.registerSmbURLHandler();

Finally, you need to setup the CXF client to turn off chunking. The reason is that the NTLM authentication requires a 3 part handshake which breaks the streaming.

Code Block

//Turn off chunking so that NTLM can occur
Client client = ClientProxy.getClient(port);
HTTPConduit http = (HTTPConduit) client.getConduit();
HTTPClientPolicy httpClientPolicy = new HTTPClientPolicy();
httpClientPolicy.setConnectionTimeout(36000);
httpClientPolicy.setAllowChunking(false);
http.setClient(httpClientPolicy);

Please also see Asynchronous HTTP Conduit for more information on NTLM.

Proxy Authentication

Proxy authentication can be configured as follows.

Configuring SSL Support

When using an "https" URL, CXF will, by default, use the certs and keystores that are part of the JDK. For many HTTPs applications, that is enough and no configuration is necessary. However, when using custom client certificates or self signed server certificates or similar, you may need to specifically configure in the keystores and trust managers and such to establish the SSL connection.

Code Block
 <conduit name="{http://example.com/}HelloWorldServicePort.http-conduit"
   xmlns:sec="http://cxf.apache.org/configuration/security"
   xmlns="http://cxf.apache.org/transports/http/configuration">
   <proxyAuthorization>
      <sec:UserName>myuser</sec:UserName>
      <sec:Password>mypasswd</sec:Password>
   </proxyAuthorization>
   <client AllowChunking="false" ProxyServer="localhost" ProxyServerPort="8080" />
 </conduit>

This works over HTTPS and HTTPS, but note for the latter it is necessary to set the following system property (see here for more information "Disable Basic authentication for HTTPS tunneling"):

Code Block
-Djdk.http.auth.tunneling.disabledSchemes=


Configuring SSL Support

When using an "https" URL, CXF will, by default, use the certs and keystores that are part of the JDK. For many HTTPs applications, that is enough and no configuration is necessary. However, when using custom client certificates or self signed server certificates or similar, you may need to specifically configure in the keystores and trust managers and such to establish the SSL connection.

To configure your client to use SSL, you'll need to add an <http:conduit> definition to your XML configuration file. See the Configuration To configure your client to use SSL, you'll need to add an <http:conduit> definition to your XML configuration file. See the Configuration guide to learn how to supply your own XML configuration file to CXF. If you are already using Spring, this can be added to your existing beans definitions.

A wsdl_first_https sample can be found in the CXF distribution with more detail. Also see this blog entry for another example.

Here Here is a sample of what your conduit definition might look like:

Code Block
xml
xml

<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:sec="http://cxf.apache.org/configuration/security"
  xmlns:http="http://cxf.apache.org/transports/http/configuration"
  xmlns:jaxws="http://java.sun.com/xml/ns/jaxws"
  xsi:schemaLocation="
      http://cxf.apache.org/configuration/security
      http://cxf.apache.org/schemas/configuration/security.xsd
      http://cxf.apache.org/transports/http/configuration
      http://cxf.apache.org/schemas/configuration/http-conf.xsd
      http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

  <http:conduit name="{http://apache.org/hello_world}HelloWorld.http-conduit">

    <http:tlsClientParameters>
      <sec:keyManagers keyPassword="password">
        <sec:keyStore type="JKS" password="password"
                      file="my/file/dir/Morpit.jks"/>
      </sec:keyManagers>
      <sec:trustManagers>
        <sec:keyStore type="JKS" password="password"
                      file="my/file/dir/Truststore.jks"/>
      </sec:trustManagers>
      <sec:cipherSuitesFilter>
        <!-- these filters ensure that a ciphersuite with
             export-suitable or null encryption is used,
             but exclude anonymous Diffie-Hellman key change as
             this is vulnerable to man-in-the-middle attacks -->
        <sec:include>.*_EXPORT_.*</sec:include>
        <sec:include>.*_EXPORT1024_.*</sec:include>
        <sec:include>.*_WITH_DES_.*</sec:include>
        <sec:include>.*_WITH_AES_.*</sec:include>
        <sec:include>.*_WITH_NULL_.*</sec:include>
        <sec:exclude>.*_DH_anon_.*</sec:exclude>
      </sec:cipherSuitesFilter>
    </http:tlsClientParameters>
    <http:authorization>
      <sec:UserName>Betty</sec:UserName>
      <sec:Password>password</sec:Password>
    </http:authorization>
    <http:client AutoRedirect="true" Connection="Keep-Alive"/>

  </http:conduit>

</beans>

...

Another option for the name attribute is a reg-ex expression (e.g., "http://localhost:*") for the ORIGINAL URL of the endpoint. The configuration is matched at conduit creation so the address used in the WSDL or used for the JAX-WS Service.create(...) call can be used for the name. For example, you can do:

Code Block
xml
xml

   <http:conduit name="http://localhost:8080/.*">
       ......
   </http:conduit>

...

If your service endpoint uses an SSL WSDL location (i.e., "https://xxx?wsdl"), you can configure the http conduit to pick up the SSL configuration by using a hardcoded http conduit name of "{http://cxf.apache.org/Image Removed}TransportURIResolver.http-conduit". The specific HTTP conduit name or a reg-ex expression can still be used.

...

Code Block
xml
xml
titleHTTP Consumer Configuration Namespace

<beans ...
       xmlns:http-conf="http://cxf.apache.org/transports/http/configuration
       ...
       xsi:schemaLocation="...
           http://cxf.apache.org/transports/http/configuration
           http://cxf.apache.org/schemas/configuration/http-conf.xsd
       ...">

...

Code Block
xml
xml
titlehttp-conf:conduit Element

...
  <http-conf:conduit name="{http://widgets/widgetvendor.net}widgetSOAPPort.http-conduit">
    ...
  </http-conf:conduit>

  <http-conf:conduit name="*.http-conduit">
  <!-- you can also using the wild card to specify 
       the http-conduit that you want to configure -->
    ...
  </http-conf:conduit>

  <http-conf:conduit name="http://localhost:8080/.*">
  <!-- you can also using the reg-ex URL matching for 
       the http-conduit that you want to configure -->
    ...
  </http-conf:conduit>
...

The http-conf:conduit element has a number of child elements that specify configuration information. They are described below. See also Sun's JSSE Guide for more information on configuring SSL.

Element

Description

http-conf:client

Specifies the HTTP connection properties such as timeouts, keep-alive requests, content types, etc.

http-conf:authorization

Specifies the the parameters for configuring the basic authentication method that the endpoint uses preemptively.

http-conf:proxyAuthorization

Specifies the parameters for configuring basic authentication against outgoing HTTP proxy servers.

http-conf:tlsClientParameters

Specifies the parameters used to configure SSL/TLS.

http-conf:

basicAuthSupplier

authSupplier

Specifies the bean reference or class name of the object that supplies the

the basic

authentication information used by the endpoint both preemptively or in response to a 401 HTTP challenge.

http-conf:trustDecider

Specifies the bean reference or class name of the object that checks the HTTP(S) URLConnection object in order to establish trust for a connection with an HTTPS service provider before any information is transmitted.

The client element

The http-conf:client element is used to configure the non-security properties of a client's HTTP connection. Its attributes, described below, specify the connection's properties.

Attribute

Description

ConnectionTimeout

Specifies the amount of time, in milliseconds, that the client will attempt to establish a connection before it times out. The default is 30000 (30 seconds).
0 specifies that the client will continue to attempt to open a connection indefinitely.

ReceiveTimeout

Specifies the amount of time, in milliseconds, that the client will wait for a response before it times out. The default is 60000.
0 specifies that the client will wait indefinitely.

AutoRedirect

Specifies if the client will automatically follow a server issued redirection. The default is false.

MaxRetransmits

Specifies the maximum number of times a client will retransmit a request to satisfy a redirect. The default is -1 which specifies that unlimited retransmissions are allowed.

AllowChunking

Specifies whether the client will send requests using chunking. The default is true which specifies that the client will use chunking when sending requests.
Chunking cannot be used

used

if either of the following are true:

  • http-conf:basicAuthSupplier is configured to provide credentials preemptively.
  • AutoRedirect is set to true.
    In both cases the value of AllowChunking is ignored and chunking is disallowed.
    See note about chunking below.

ChunkingThreshold

Specifies the threshold at which CXF will switch from non-chunking to chunking. By default, messages less than 4K are buffered and sent non-chunked. Once this threshold is reached, the message is chunked.

Accept

Specifies what media types the client is prepared to handle. The value is used as the value of the HTTP Accept property. The value of the attribute is specified using as multipurpose internet mail extensions (MIME) types. See note about chunking below.

AcceptLanguage

Specifies what language (for example, American English) the client prefers for the purposes of receiving a response. The value is used as the value of the HTTP AcceptLanguage property.
Language tags are regulated by the International Organization for Standards (ISO) and are typically formed by combining a language code, determined by the ISO-639 standard, and country code, determined by the ISO-3166 standard, separated by a hyphen. For example, en-US represents American English.

AcceptEncoding

Specifies what content encodings the client is prepared to handle. Content encoding labels are regulated by the Internet Assigned Numbers Authority (IANA). The value is used as the value of the HTTP AcceptEncoding property.

ContentType

Specifies the media type of the data being sent in the body of a message. Media types are specified using multipurpose internet mail extensions (MIME) types. The value is used as the value of the HTTP ContentType property. The default is text/xml.
Tip: For web services, this should be set to text/xml. If the client is sending HTML form data to a CGI script, this should be set to application/x-www-form-urlencoded. If the HTTP POST request is bound to a fixed payload format (as opposed to SOAP), the content type is typically set to application/octet-stream.

Host

Specifies the Internet host and port number of the resource on which the request is being invoked. The value is used as the value of the HTTP Host property.
Tip: This attribute is typically not required. It is only required by certain DNS scenarios or application designs. For example, it indicates what host the client prefers for clusters (that is, for virtual servers mapping to the same Internet protocol (IP) address).

Connection

Specifies whether a particular connection is to be kept open or closed after each request/response dialog. There are two valid values:

  • Keep-Alive(default) specifies that the client wants to keep its connection open after the initial request/response sequence. If the server honors it, the connection is kept open until the consumer closes it.
  • close specifies that the connection to the server is closed after each request/response sequence.

CacheControl

Specifies directives about the behavior that must be adhered to by caches involved in the chain comprising a request from a client to a server.

Cookie

Specifies a static cookie to be sent with all requests.

BrowserType

Specifies information about the browser from which the request originates. In the HTTP specification from the World Wide Web consortium (W3C) this is also known as the user-agent. Some servers optimize based upon the client that is sending the request.

Referer

Specifies the URL of the resource that directed the consumer to make requests on a particular service. The value is used as the value of the HTTP Referer property.
Note: This HTTP property is used when a request is the result of a browser user clicking on a hyperlink rather than typing a URL. This can allow the server to optimize processing based upon previous task flow, and to generate lists of back-links to resources for the purposes of logging, optimized caching, tracing of obsolete or mistyped links, and so on. However, it is typically not used in web services applications.
Important: If the AutoRedirect attribute is set to true and the request is redirected, any value specified in the Refererattribute is overridden. The value of the HTTP Referer property will be set to the URL of the service who redirected the consumer's original request.

DecoupledEndpoint

Specifies the URL of a decoupled endpoint for the receipt of responses over a separate server->client connection.
Warning: You must configure both the client and server to use WS-Addressing for the decoupled endpoint to work.

ProxyServer

Specifies the URL of the proxy server through which requests are routed.

ProxyServerPort

Specifies the port number of the proxy server through which requests are routed.

NonProxyHostsSpecifies a list of hosts that should be directly routed. This value is a list of patterns separated by '|', where each pattern may start or end with a '*' for wildcard matching.

ProxyServerType

Specifies the type of proxy server used to route requests. Valid values are:

  • HTTP(default)
  • SOCKS

Example using the Client Element

...

Code Block
xml
xml
titleHTTP Consumer Endpoint Configuration

<beans xmlns="http://www.springframework.org/schema/beans<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:http-conf="http://cxf.apache.org/transports/http/configuration"
       xsi:schemaLocation="http://cxf.apache.org/transports/http/configuration
           http://cxf.apache.org/schemas/configuration/http-conf.xsd
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd">

  <http-conf:conduit name="{http://apache.org/hello_world_soap_http}SoapPort.http-conduit">
    <http-conf:client Connection="Keep-Alive"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:http-conf="http://cxf.apache.org/transports/http/configuration"
       xsi:schemaLocation="               MaxRetransmits="1"
                      AllowChunking="false" />
  </http-conf:conduit>
</beans>

Again, see the Configuration page for information on how to get CXF to detect your configuration file.

The tlsClientParameters element

Please see TLS Configuration page for more information.

Using WSDL

Namespace

The WSDL extension elements used to configure an HTTP client are defined in the namespace http://cxf.apache.org/transports/http/configuration. It is commonly referred to using the prefix http-conf. In order to use the HTTP configuration elements you will need to add the line shown below to the definitions element of your endpoint's WSDL document.

Code Block
xml
xml
titleHTTP Consumer WSDL Element's Namespace
<definitions ...
   xmlns:http-conf="http://cxf.apache.org/transports/http/configuration

The client element

The http-conf:client element is used to specify the connection properties of an HTTP client in a WSDL document. The http-conf:client element is a child of the WSDL port element. It has the same attributes as the client element used in the configuration file.

Example

The example below shows a WSDL fragment that configures an HTTP client to specify that it will not interact with caches.

Code Block
xml
xml
titleWSDL to Configure an HTTP Consumer Endpoint
<service ...>
  <port ...>
    <soap:address ... />
    <http-conf:client CacheControl="no-cache
           http://cxf.apache.org/schemas/configuration/http-conf.xsd
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd">

  <http-conf:conduit name="{http://apache.org/hello_world_soap_http}SoapPort.http-conduit">
    <http-conf:client Connection="Keep-Alive"
                      MaxRetransmits="1"
                      AllowChunking="false" />
  </http-conf:conduit>port>
</beans>

Again, see the Configuration page for information on how to get CXF to detect your configuration file.

The tlsClientParameters element

Please see TLS Configuration page for more information.

Using WSDL

Namespace

The WSDL extension elements used to configure an HTTP client are defined in the namespace http://cxf.apache.org/transports/http/configuration. It is commonly referred to using the prefix http-conf. In order to use the HTTP configuration elements you will need to add the line shown below to the definitions element of your endpoint's WSDL document.

...


<definitions ...
   xmlns:http-conf="http://cxf.apache.org/transports/http/configuration

The client element

The http-conf:client element is used to specify the connection properties of an HTTP client in a WSDL document. The http-conf:client element is a child of the WSDL port element. It has the same attributes as the client element used in the configuration file.

Example

The example below shows a WSDL fragment that configures an HTTP client to specify that it will not interact with caches.

...


<service ...>
  <port ...>
    <soap:address ... />
    <http-conf:client CacheControl="no-cache" />
  </port>
</service>
service>

Using java code

How to configure the HTTPConduit for the SOAP Client?

First you need get the HTTPConduit from the Proxy object or Client, then you can set the HTTPClientPolicy, AuthorizationPolicy, ProxyAuthorizationPolicy, TLSClientParameters.

Code Block
java
java
  import org.apache.cxf.endpoint.Client;
  import org.apache.cxf.frontend.ClientProxy;
  import org.apache.cxf.transport.http.HTTPConduit;
  import org.apache.cxf.transports.http.configuration.HTTPClientPolicy;
  ...

  URL wsdl = getClass().getResource("wsdl/greeting.wsdl");
  SOAPService service = new SOAPService(wsdl, serviceName);
  Greeter greeter = service.getPort(portName, Greeter.class);

  // Okay, are you sick of configuration files ?
  // This will show you how to configure the http conduit dynamically
  Client client = ClientProxy.getClient(greeter);
  HTTPConduit http = (HTTPConduit) client.getConduit();

  HTTPClientPolicy httpClientPolicy = new HTTPClientPolicy();

  httpClientPolicy.setConnectionTimeout(36000);
  httpClientPolicy.setAllowChunking(false);
  httpClientPolicy.setReceiveTimeout(32000);

  http.setClient(httpClientPolicy);

  ...
  greeter.sayHi("Hello");

How to use HTTPConduitConfigurer?

In certain cases, the HTTPConduit could be recreated (for example when using the FailoverFeature) and therefore losing the preconfigured policies. To overcome that, the HTTPConduitConfigurer has been introduced. Here is an example of how it could be used.

Code Block
java
java
 HTTPConduitConfigurer httpConduitConfigurer = new HTTPConduitConfigurer() {
    public void configure(String name, String address, HTTPConduit c) {
      

Using java code

How to configure the HTTPConduit for the SOAP Client?

First you need get the HTTPConduit from the Proxy object or Client, then you can set the HTTPClientPolicy, AuthorizationPolicy, ProxyAuthorizationPolicy, TLSClientParameters, and/or HttpBasicAuthSupplier.

Code Block
javajava

  import org.apache.cxf.endpoint.Client;
  import org.apache.cxf.frontend.ClientProxy;
  import org.apache.cxf.transport.http.HTTPConduit;
  import org.apache.cxf.transports.http.configuration.HTTPClientPolicy;
  ...

  URL wsdl = getClass().getResource("wsdl/greeting.wsdl");
  SOAPService service = new SOAPService(wsdl, serviceName);
  Greeter greeter = service.getPort(portName, Greeter.class);

  // Okay, are you sick of configuration files ?
  // This will show you how to configure the http conduit dynamically
  Client client = ClientProxy.getClient(greeter);
  HTTPConduit http = (HTTPConduit) client.getConduit();

  HTTPClientPolicy httpClientPolicy = new HTTPClientPolicy();
            
        httpClientPolicy.setConnectionTimeout(36000);
        httpClientPolicy.setAllowChunking(false);
        httpClientPolicy.setReceiveTimeout(32000);
             
    http    c.setClient(httpClientPolicy);
    }
}
  ...
  greeter
bus.sayHi("Hello"setExtension(httpConduitConfigurer, HTTPConduitConfigurer.class);


How to override the service address ?

If you are using JAXWS API to create the proxy obejct, here is an example which is complete JAX-WS compliant code

Code Block
java
java

   URL wsdlURL = MyService.class.getClassLoader
            .getResource ("myService.wsdl");
   QName serviceName = new QName("urn:myService", "MyService");
   MyService service = new MyService(wsdlURL, serviceName);
   ServicePort client = service.getServicePort();
   BindingProvider provider = (BindingProvider)client;
   // You can set the address per request here
   provider.getRequestContext().put(
        BindingProvider.ENDPOINT_ADDRESS_PROPERTY,
        "http://my/new/url/to/the/service");

...

Here is another way which takes advantage of JAXWS's Service.addPort() API

Code Block
java
java

   URL wsdlURL = MyService.class.getClassLoader.getResource("service2.wsdl");
   QName serviceName = new QName("urn:service2", "MyService");
   QName portName = new QName("urn:service2", "ServicePort");
   MyService service = new MyService(wsdlURL, serviceName);
   // You can add whatever address as you want
   service.addPort(portName, "http://schemas.xmlsoap.org/soap/", "http://the/new/url/myService");
   // Passing the SEI class that is generated by wsdl2java      
   ServicePort proxy = service.getPort(portName, SEI.class);

...

The following table lists the cache control directives supported by an HTTP client.

Directive

Behavior

no-cache

Caches cannot use a particular response to satisfy subsequent requests without first revalidating that response with the server. If specific response header fields are specified with this value, the restriction applies only to those header fields within the response. If no response header fields are specified, the restriction applies to the entire response.

no-store

Caches must not store any part of a response or any part of the request that invoked it.

max-age

The consumer can accept a response whose age is no greater than the specified time in seconds.

max-stale

The consumer can accept a response that has exceeded its expiration time. If a value is assigned to max-stale, it represents the number of seconds beyond the expiration time of a response up to which the consumer can still accept that response. If no value is assigned, it means the consumer can accept a stale response of any age.

min-fresh

The consumer wants a response that will be still be fresh for at least the specified number of seconds indicated.

no-transform

Caches must not modify media type or location of the content in a response between a provider and a consumer.

only-if-cached

Caches should return only responses that are currently stored in the cache, and not responses that need to be reloaded or revalidated.

cache-extension

Specifies additional extensions to the other cache directives. Extensions might be informational or behavioral. An extended directive is specified in the context of a standard directive, so that applications not understanding the extended directive can at least adhere to the behavior mandated by the standard directive.

A Note About Chunking

There are two ways of putting a body into an HTTP stream:

...

  • Many proxy servers don't understand it, especially older proxy servers. Many proxy servers want the Content-Length up front so they can allocate a buffer to store the request before passing it onto the real server.
  • Some of the older WebServices stacks also have problems with Chunking. Specifically, older versions of .NET..NET.

If you are getting strange errors (generally not soap faults, but other HTTP type errors) when trying to interact with a service, try turning off chunking to see if that helps.

When to set custom headers

If you use a custom CXF interceptor to set one or more outbound HTTP headers then it is recommended to get this interceptor running at a stage preceding the WRITE stage, before the outbound body is written out.

Otherwise the custom headers may get lost. The headers may get retained in some cases even if they are added after the body is written out, example, when a chunking threshold value (4K by default) has not been reached,

but relying on it for the headers not to be lost is brittle and should be avoidedIf you are getting strange errors (generally not soap faults, but other HTTP type errors) when trying to interact with a service, try turning off chunking to see if that helps.

Asynchronous HTTP Conduit

Please see Asynchronous HTTP Conduit page for more information.