Hello!
I'm trying to deploy basic connectivity between Flex AS3 application
and web2py server-side. In order to achieve this noble cause I studied
the official tutorial (http://www.web2py.com/AlterEgo/default/show/22)
and the official documentation (http://web2py.com/book/default/section/
9/2).
So, I created two controllers 'rpc' and 'rpc2' as follows:
rpc.py
---------------
from gluon.tools import Service
service = Service(globals())
def call():
session.forget()
return service()
@service.amfrpc
def test():
return "Test!!!"
rpc2.py
---------------
import pyamf
import pyamf.remoting.gateway
def test():
return "Test!!!"
services={'test.test':test}
def gateway():
base_gateway = pyamf.remoting.gateway.BaseGateway(services)
context = pyamf.get_context(pyamf.AMF0)
pyamf_request = pyamf.remoting.decode(request.body.read(),
context)
pyamf_response = pyamf.remoting.Envelope(pyamf_request.amfVersion,
pyamf_request.clientType)
for name, message in pyamf_request:
pyamf_response[name] = base_gateway.getProcessor(message)
(message)
response.headers['Content-Type'] = pyamf.remoting.CONTENT_TYPE
return pyamf.remoting.encode(pyamf_response, context).getvalue()
-------------
After that, I tried accessing exposed amf services using both
controllers respectively via browser through the following URLs:
http://127.0.0.1:8000/AppTryout/rpc/call/amfrpc/test
http://127.0.0.1:8000/AppTryout/rpc2/gateway/test
In both cases I recieve similar errors:
for http://127.0.0.1:8000/AppTryout/rpc/call/amfrpc/test :
---------------------------------------------------------------------------------
Traceback (most recent call last):
File "gluon/restricted.py", line 173, in restricted
File "//server2003/web2py/applications/AppTryout/controllers/
rpc.py", line 13, in <module>
File "gluon/globals.py", line 96, in <lambda>
File "//server2003/web2py/applications/AppTryout/controllers/
rpc.py", line 7, in call
File "gluon/tools.py", line 2942, in __call__
File "gluon/tools.py", line 2885, in serve_amfrpc
File "\\server2003\web2py\library.zip\pyamf\remoting\__init__.py",
line 634, in decode
File "\\server2003\web2py\library.zip\pyamf\util\__init__.py", line
322, in read_uchar
File "\\server2003\web2py\library.zip\pyamf\util\__init__.py", line
298, in _read
File "\\server2003\web2py\library.zip\pyamf\util\__init__.py", line
646, in read
IOError: Attempted to read 1 bytes from the buffer but only 0 remain
In file: \\server2003\web2py\applications\AppTryout/controllers/rpc.py
from gluon.tools import Service
service = Service(globals())
def call():
session.forget()
return service()
@service.amfrpc
def test():
return "Test!!!"
response._vars=response._caller(call)
for http://127.0.0.1:8000/AppTryout/rpc/call/amfrpc/test :
---------------------------------------------------------------------------------
Traceback (most recent call last):
File "gluon/restricted.py", line 173, in restricted
File "//server2003/web2py/applications/AppTryout/controllers/
rpc2.py", line 18, in <module>
File "gluon/globals.py", line 96, in <lambda>
File "//server2003/web2py/applications/AppTryout/controllers/
rpc2.py", line 12, in gateway
File "\\server2003\web2py\library.zip\pyamf\remoting\__init__.py",
line 634, in decode
File "\\server2003\web2py\library.zip\pyamf\util\__init__.py", line
322, in read_uchar
File "\\server2003\web2py\library.zip\pyamf\util\__init__.py", line
298, in _read
File "\\server2003\web2py\library.zip\pyamf\util\__init__.py", line
646, in read
IOError: Attempted to read 1 bytes from the buffer but only 0 remain
In file: \\server2003\web2py\applications\AppTryout/controllers/
rpc2.py
import pyamf
import pyamf.remoting.gateway
def test():
return "Test!!!"
services={'test.test':test}
def gateway():
base_gateway = pyamf.remoting.gateway.BaseGateway(services)
context = pyamf.get_context(pyamf.AMF0)
pyamf_request = pyamf.remoting.decode(request.body.read(),
context)
pyamf_response = pyamf.remoting.Envelope(pyamf_request.amfVersion,
pyamf_request.clientType)
for name, message in pyamf_request:
pyamf_response[name] = base_gateway.getProcessor(message)
(message)
response.headers['Content-Type'] = pyamf.remoting.CONTENT_TYPE
return pyamf.remoting.encode(pyamf_response, context).getvalue()
response._vars=response._caller(gateway)
It can be seen that in both cases the error arrises in the statement:
response._vars=response._caller(...)
and involves exactly the same code in pyamf module.
In httpserver.log I get:
127.0.0.1, 2010-03-09 20:49:52, GET, /AppTryout/rpc/call/amfrpc/test,
HTTP/1.1, 500, 4.131000
127.0.0.1, 2010-03-09 20:50:24, GET, /AppTryout/rpc2/gateway/test,
HTTP/1.1, 500, 6.098000
-----------------------------------------------------------------------------
My surmise is thay amfrpc won't work with browser, so I prepared
simple Flex application to consume these services:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
layout="absolute">
<mx:Script>
<![CDATA[
import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
import mx.controls.Alert;
private function resultHandler(event:ResultEvent):void
{
trace(event.result.toString());
}
private function faultHandler(event:FaultEvent):void
{
trace(event.fault.message);
}
private function fire():void
{
amfService.test();
amfService2.test();
}
]]>
</mx:Script>
<mx:RemoteObject id="amfService" showBusyCursor="true"
destination="dest-amfrpc">
<mx:method name="test" result="resultHandler(event)"
fault="faultHandler(event)"/>
</mx:RemoteObject>
<mx:RemoteObject id="amfService2" showBusyCursor="true"
destination="dest-amfrpc2">
<mx:method name="test" result="resultHandler(event)"
fault="faultHandler(event)"/>
</mx:RemoteObject>
<mx:Button x="250" y="150" label="Fire" click="fire();"/>
</mx:Application>
------------
Its corresponding services-config.xml looks as follows:
<?xml version="1.0" encoding="UTF-8"?>
<services-config>
<services>
<service id="amfrpc-flashremoting-service"
class="flex.messaging.services.RemotingService"
messageTypes="flex.messaging.messages.RemotingMessage">
<destination id="dest-amfrpc">
<channels>
<channel ref="ch-amfrpc"/>
</channels>
<properties>
<source>*</source>
</properties>
</destination>
<destination id="dest-amfrpc2">
<channels>
<channel ref="ch-amfrpc2"/>
</channels>
<properties>
<source>*</source>
</properties>
</destination>
</service>
</services>
<channels>
<channel-definition id="ch-amfrpc"
class="mx.messaging.channels.AMFChannel">
<endpoint uri="http://127.0.0.1:8000/AppTryout/rpc/call/
amfrpc/test" class="flex.messaging.endpoints.AMFEndpoint"/>
</channel-definition>
<channel-definition id="ch-amfrpc2"
class="mx.messaging.channels.AMFChannel">
<endpoint uri="http://127.0.0.1:8000/AppTryout/rpc2/
gateway/test" class="flex.messaging.endpoints.AMFEndpoint"/>
</channel-definition>
</channels>
</services-config>
-------
When I run the Flex app, I got the follwing trace:
faultCode:Service.ResourceNotFound faultString:'Unknown service dest-
amfrpc.test' faultDetail:''
faultCode:Service.ResourceNotFound faultString:'Unknown service dest-
amfrpc2.test' faultDetail:''
But httpserver.log says something else this time:
127.0.0.1, 2010-03-09 20:57:22, POST, /AppTryout/rpc/call/amfrpc/test,
HTTP/1.1, 200, 4.328000
127.0.0.1, 2010-03-09 20:57:27, POST, /AppTryout/rpc2/gateway/test,
HTTP/1.1, 200, 10.093000
So, Flex reaches the server and gets valid response, but then fails to
handle it for some reson.
At this moment I'm at a loss, because I don't know whether my mistake
is at client-side or server-side.
Any help will be greatly appreciated.
Thanks!
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