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Package soap-react
Short Description Simple, async SOAP webservice client library, built on top of ReactPHP
License MIT
Homepage https://github.com/clue/reactphp-soap
Informations about the package soap-react
clue/reactphp-soap
Simple, async SOAP web service client library, built on top of ReactPHP.
Most notably, SOAP is often used for invoking Remote procedure calls (RPCs) in distributed systems. Internally, SOAP messages are encoded as XML and usually sent via HTTP POST requests. For the most part, SOAP (originally Simple Object Access protocol) is a protocol of the past, and in fact anything but simple. It is still in use by many (often legacy) systems. This project provides a simple API for invoking async RPCs to remote web services.
- Async execution of functions - Send any number of functions (RPCs) to the remote web service in parallel and process their responses as soon as results come in. The Promise-based design provides a sane interface to working with out of bound responses.
- Async processing of the WSDL - The WSDL (web service description language) file will be downloaded and processed in the background.
- Event-driven core - Internally, everything uses event handlers to react to incoming events, such as an incoming RPC result.
- Lightweight, SOLID design - Provides a thin abstraction that is just good enough and does not get in your way. Built on top of tested components instead of re-inventing the wheel.
- Good test coverage - Comes with an automated tests suite and is regularly tested against actual web services in the wild.
Table of contents
- Quickstart example
- Usage
- Client
- soapCall()
- getFunctions()
- getTypes()
- getLocation()
- withLocation()
- Proxy
- Functions
- Promises
- Cancellation
- Timeouts
- Install
- Tests
- License
Quickstart example
Once installed, you can use the following code to query an example web service via SOAP:
See also the examples.
Usage
Client
The Client
class is responsible for communication with the remote SOAP
WebService server.
It requires a Browser
object
bound to the main EventLoop
in order to handle async requests, the WSDL file contents and an optional
array of SOAP options:
If you need custom connector settings (DNS resolution, TLS parameters, timeouts,
proxy servers etc.), you can explicitly pass a custom instance of the
ConnectorInterface
to the Browser
instance:
The Client
works similar to PHP's SoapClient
(which it uses under the
hood), but leaves you the responsibility to load the WSDL file. This allows
you to use local WSDL files, WSDL files from a cache or the most common form,
downloading the WSDL file contents from an URL through the Browser
:
The Client
constructor loads the given WSDL file contents into memory and
parses its definition. If the given WSDL file is invalid and can not be
parsed, this will throw a SoapFault
:
Note that if you have
ext-xdebug
loaded, this may halt with a fatal error instead of throwing aSoapFault
. It is not recommended to use this extension in production, so this should only ever affect test environments.
The Client
constructor accepts an array of options. All given options will
be passed through to the underlying SoapClient
. However, not all options
make sense in this async implementation and as such may not have the desired
effect. See also SoapClient
documentation for more details.
If working in WSDL mode, the $options
parameter is optional. If working in
non-WSDL mode, the WSDL parameter must be set to null
and the options
parameter must contain the location
and uri
options, where location
is
the URL of the SOAP server to send the request to, and uri
is the target
namespace of the SOAP service:
Similarly, if working in WSDL mode, the location
option can be used to
explicitly overwrite the URL of the SOAP server to send the request to:
You can use the soap_version
option to change from the default SOAP 1.1 to
use SOAP 1.2 instead:
You can use the classmap
option to map certain WSDL types to PHP classes
like this:
The proxy_host
option (and family) is not supported by this library. As an
alternative, you can configure the given $browser
instance to use an
HTTP proxy server.
If you find any other option is missing or not supported here, PRs are much
appreciated!
All public methods of the Client
are considered advanced usage.
If you want to call RPC functions, see below for the Proxy
class.
soapCall()
The soapCall(string $method, mixed[] $arguments): PromiseInterface<mixed, Exception>
method can be used to
queue the given function to be sent via SOAP and wait for a response from the remote web service.
Note: This is considered advanced usage, you may want to look into using the Proxy
instead.
getFunctions()
The getFunctions(): string[]|null
method can be used to
return an array of functions defined in the WSDL.
It returns the equivalent of PHP's
SoapClient::__getFunctions()
.
In non-WSDL mode, this method returns null
.
getTypes()
The getTypes(): string[]|null
method can be used to
return an array of types defined in the WSDL.
It returns the equivalent of PHP's
SoapClient::__getTypes()
.
In non-WSDL mode, this method returns null
.
getLocation()
The getLocation(string|int $function): string
method can be used to
return the location (URI) of the given webservice $function
.
Note that this is not to be confused with the WSDL file location. A WSDL file can contain any number of function definitions. It's very common that all of these functions use the same location definition. However, technically each function can potentially use a different location.
The $function
parameter should be a string with the the SOAP function name.
See also getFunctions()
for a list of all available functions.
For easier access, this function also accepts a numeric function index.
It then uses getFunctions()
internally to get the function
name for the given index.
This is particularly useful for the very common case where all functions use the
same location and accessing the first location is sufficient.
When the location
option has been set in the Client
constructor
(such as when in non-WSDL mode) or via the withLocation()
method, this
method returns the value of the given location.
Passing a $function
not defined in the WSDL file will throw a SoapFault
.
withLocation()
The withLocation(string $location): self
method can be used to
return a new Client
with the updated location (URI) for all functions.
Note that this is not to be confused with the WSDL file location. A WSDL file can contain any number of function definitions. It's very common that all of these functions use the same location definition. However, technically each function can potentially use a different location.
As an alternative to this method, you can also set the location
option
in the Client
constructor (such as when in non-WSDL mode).
Proxy
The Proxy
class wraps an existing Client
instance in order to ease calling
SOAP functions.
Note that this class is called "Proxy" because it will forward (proxy) all method calls to the actual SOAP service via the underlying
Client::soapCall()
method. This is not to be confused with using a proxy server. SeeClient
documentation for more details on how to use an HTTP proxy server.
Functions
Each and every method call to the Proxy
class will be sent via SOAP.
Please refer to your WSDL or its accompanying documentation for details on which functions and arguments are supported.
Promises
Issuing SOAP functions is async (non-blocking), so you can actually send multiple RPC requests in parallel. The web service will respond to each request with a return value. The order is not guaranteed. Sending requests uses a Promise-based interface that makes it easy to react to when a request is fulfilled (i.e. either successfully resolved or rejected with an error):
Cancellation
The returned Promise is implemented in such a way that it can be cancelled when it is still pending. Cancelling a pending promise will reject its value with an Exception and clean up any underlying resources.
Timeouts
This library uses a very efficient HTTP implementation, so most SOAP requests
should usually be completed in mere milliseconds. However, when sending SOAP
requests over an unreliable network (the internet), there are a number of things
that can go wrong and may cause the request to fail after a time. As such,
timeouts are handled by the underlying HTTP library and this library respects
PHP's default_socket_timeout
setting (default 60s) as a timeout for sending the
outgoing SOAP request and waiting for a successful response and will otherwise
cancel the pending request and reject its value with an Exception.
Note that this timeout value covers creating the underlying transport connection,
sending the SOAP request, waiting for the remote service to process the request
and receiving the full SOAP response. To pass a custom timeout value, you can
assign the underlying timeout
option
like this:
Similarly, you can use a negative timeout value to not apply a timeout at all
or use a null
value to restore the default handling. Note that the underlying
connection may still impose a different timeout value. See also the underlying
timeout
option for more details.
Install
The recommended way to install this library is through Composer. New to Composer?
This project follows SemVer. This will install the latest supported version:
See also the CHANGELOG for details about version upgrades.
This project aims to run on any platform and thus only requires ext-soap
and
supports running on legacy PHP 5.3 through current PHP 7+ and HHVM.
It's highly recommended to use PHP 7+ for this project.
Tests
To run the test suite, you first need to clone this repo and then install all dependencies through Composer:
To run the test suite, go to the project root and run:
The test suite also contains a number of functional integration tests that rely on a stable internet connection. If you do not want to run these, they can simply be skipped like this:
License
This project is released under the permissive MIT license.
Did you know that I offer custom development services and issuing invoices for sponsorships of releases and for contributions? Contact me (@clue) for details.
All versions of soap-react with dependencies
clue/buzz-react Version ^2.5
react/event-loop Version ^1.0 || ^0.5 || ^0.4 || ^0.3
react/promise Version ^2.1 || ^1.2
ext-soap Version *