Asp Forum - strange error from soap server

jm

5/13/2005 1:43:00 PM

I came across this with a larger program to expose the functionality of
a class via a SOAP interface. The original class passes all test, but
the SOAP server generates a strange error which I have no idea how to
solve even after staring at it for hours. The below is a very cut down
version that produces the same error. It's most likely something to do
with the way soap4r is being called in the server as the line protocol
looks correct at a cursory glance, but where and what?

See below for the source code.

the client returns this error
$ ruby lib/dummy_client.rb
Loaded suite lib/dummy_client
Started
E
Finished in 0.015137 seconds.

1) Error:
test_ping_pong(DummySoap):
SOAP::EncodingStyle::Handler::EncodingStyleError: Illegal parent: .
/usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:253:in
`decode_parent'
/usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:131:in
`as_struct'
/usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:232:in
`decode_parent'
/usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:131:in
`as_struct'
/usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:232:in
`decode_parent'
/usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:142:in
`as_string'
/usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:202:in
`decode_tag_end'
/usr/lib/ruby/1.8/soap/parser.rb:191:in `decode_tag_end'
/usr/lib/ruby/1.8/soap/parser.rb:152:in `end_element'
/usr/lib/ruby/1.8/xsd/xmlparser/parser.rb:75:in `end_element'
/usr/lib/ruby/1.8/xsd/xmlparser/rexmlparser.rb:38:in `tag_end'
/usr/lib/ruby/1.8/rexml/parsers/streamparser.rb:26:in `parse'
/usr/lib/ruby/1.8/rexml/document.rb:171:in `parse_stream'
/usr/lib/ruby/1.8/xsd/xmlparser/rexmlparser.rb:27:in `do_parse'
/usr/lib/ruby/1.8/soap/parser.rb:90:in `parse'
/usr/lib/ruby/1.8/soap/processor.rb:39:in `unmarshal'
/usr/lib/ruby/1.8/soap/rpc/proxy.rb:191:in `unmarshal'
/usr/lib/ruby/1.8/soap/rpc/proxy.rb:118:in `invoke'
/usr/lib/ruby/1.8/soap/rpc/proxy.rb:131:in `call'
/usr/lib/ruby/1.8/soap/rpc/driver.rb:275:in `call'
/usr/lib/ruby/1.8/soap/rpc/driver.rb:302:in `ping'
/usr/lib/ruby/1.8/soap/rpc/driver.rb:297:in `ping'
lib/dummy_client.rb:15:in `test_ping_pong'

1 tests, 0 assertions, 0 failures, 1 errors

this error is logged by the server

[2005-05-13 23:29:07] ERROR ArgumentError: wrong number of arguments (0
for 1)
/usr/lib/ruby/1.8/soap/rpc/soaplet.rb:100:in `debug'
/usr/lib/ruby/1.8/soap/rpc/soaplet.rb:100:in `do_POST'
/usr/lib/ruby/1.8/webrick/httpservlet/abstract.rb:35:in
`__send__'
/usr/lib/ruby/1.8/webrick/httpservlet/abstract.rb:35:in
`service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/lib/ruby/1.8/webrick/server.rb:155:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:144:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:144:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:94:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:89:in `each'
/usr/lib/ruby/1.8/webrick/server.rb:89:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:79:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:79:in `start'
lib/dummy_soap.rb:36

#### dummy_soap.rb
#!/usr/bin/ruby

$LOAD_PATH.unshift File.join(File.dirname(__FILE__), "..","lib")
require 'webrick'
require 'soap/rpc/soaplet'

class Dummy
def ping
'pong'
end
end

class HTTPAccessDenied < WEBrick::HTTPServerError; end

#defaults
basedir =
File::dirname(File::expand_path(__FILE__)).split('/')[0..-2].join('/')
logfilename = 'dummy.log'
docroot = File.join(basedir,"html")

s=WEBrick::HTTPServer.new(
:BindAddress => "127.0.0.1",
:Port => 3000,
:Logger => WEBrick::Log::new(logfilename, WEBrick::Log::INFO),
:DocumentRoot => docroot
)

srv = SOAP::RPC::SOAPlet.new
srv.add_servant(Dummy.new,'urn:FWControl')

# Mount it at somewhere.
s.mount("/soap", srv)
trap("INT"){ s.shutdown }
s.start

### dummy_client.rb
#!/usr/bin/ruby
$LOAD_PATH.unshift File.join(File.dirname(__FILE__), "..","lib")
require 'test/unit'
require 'soap/rpc/driver'

URL="http://127.0.0.1:3000/...
NS="urn:Dummy"

class DummySoap < Test::Unit::TestCase
def setup
@proxy = SOAP::RPC::Driver.new(URL,NS)
@proxy.add_method('ping')
end
def test_ping_pong
assert_equal('pong',@proxy.ping)
end
end

4 Answers

jm

5/14/2005 4:20:00 AM

Seems that SOAP::RPC::StandaloneServer uses inherits from
Logger::Application which uses the call to
Logger::debug(progname = nil, &block) which is different to the call
to WEBrick::Logger.debug(msg). So that changing the logger, thusly,

logger = Logger.new(logfilename)
logger.level = Logger::INFO

s=WEBrick::HTTPServer.new(
:BindAddress => "127.0.0.1",
:Port => 3000,
:Logger => logger
)

fixes the problem. Any chance this will be straightened out in the next
release as this through me for a six.

J.

On 13/05/2005, at 11:42 PM, jm wrote:

> I came across this with a larger program to expose the functionality
> of a class via a SOAP interface. The original class passes all test,
> but the SOAP server generates a strange error which I have no idea how
> to solve even after staring at it for hours. The below is a very cut
> down version that produces the same error. It's most likely something
> to do with the way soap4r is being called in the server as the line
> protocol looks correct at a cursory glance, but where and what?
>
> See below for the source code.
>
> the client returns this error
> $ ruby lib/dummy_client.rb
> Loaded suite lib/dummy_client
> Started
> E
> Finished in 0.015137 seconds.
>
> 1) Error:
> test_ping_pong(DummySoap):
> SOAP::EncodingStyle::Handler::EncodingStyleError: Illegal parent: .
> /usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:253:in
> `decode_parent'
> /usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:131:in
> `as_struct'
> /usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:232:in
> `decode_parent'
> /usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:131:in
> `as_struct'
> /usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:232:in
> `decode_parent'
> /usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:142:in
> `as_string'
> /usr/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:202:in
> `decode_tag_end'
> /usr/lib/ruby/1.8/soap/parser.rb:191:in `decode_tag_end'
> /usr/lib/ruby/1.8/soap/parser.rb:152:in `end_element'
> /usr/lib/ruby/1.8/xsd/xmlparser/parser.rb:75:in `end_element'
> /usr/lib/ruby/1.8/xsd/xmlparser/rexmlparser.rb:38:in `tag_end'
> /usr/lib/ruby/1.8/rexml/parsers/streamparser.rb:26:in `parse'
> /usr/lib/ruby/1.8/rexml/document.rb:171:in `parse_stream'
> /usr/lib/ruby/1.8/xsd/xmlparser/rexmlparser.rb:27:in `do_parse'
> /usr/lib/ruby/1.8/soap/parser.rb:90:in `parse'
> /usr/lib/ruby/1.8/soap/processor.rb:39:in `unmarshal'
> /usr/lib/ruby/1.8/soap/rpc/proxy.rb:191:in `unmarshal'
> /usr/lib/ruby/1.8/soap/rpc/proxy.rb:118:in `invoke'
> /usr/lib/ruby/1.8/soap/rpc/proxy.rb:131:in `call'
> /usr/lib/ruby/1.8/soap/rpc/driver.rb:275:in `call'
> /usr/lib/ruby/1.8/soap/rpc/driver.rb:302:in `ping'
> /usr/lib/ruby/1.8/soap/rpc/driver.rb:297:in `ping'
> lib/dummy_client.rb:15:in `test_ping_pong'
>
> 1 tests, 0 assertions, 0 failures, 1 errors
>
> this error is logged by the server
>
> [2005-05-13 23:29:07] ERROR ArgumentError: wrong number of arguments
> (0 for 1)
> /usr/lib/ruby/1.8/soap/rpc/soaplet.rb:100:in `debug'
> /usr/lib/ruby/1.8/soap/rpc/soaplet.rb:100:in `do_POST'
> /usr/lib/ruby/1.8/webrick/httpservlet/abstract.rb:35:in
> `__send__'
> /usr/lib/ruby/1.8/webrick/httpservlet/abstract.rb:35:in
> `service'
> /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
> /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
> /usr/lib/ruby/1.8/webrick/server.rb:155:in `start_thread'
> /usr/lib/ruby/1.8/webrick/server.rb:144:in `start'
> /usr/lib/ruby/1.8/webrick/server.rb:144:in `start_thread'
> /usr/lib/ruby/1.8/webrick/server.rb:94:in `start'
> /usr/lib/ruby/1.8/webrick/server.rb:89:in `each'
> /usr/lib/ruby/1.8/webrick/server.rb:89:in `start'
> /usr/lib/ruby/1.8/webrick/server.rb:79:in `start'
> /usr/lib/ruby/1.8/webrick/server.rb:79:in `start'
> lib/dummy_soap.rb:36
>
> #### dummy_soap.rb
> #!/usr/bin/ruby
>
> $LOAD_PATH.unshift File.join(File.dirname(__FILE__), "..","lib")
> require 'webrick'
> require 'soap/rpc/soaplet'
>
> class Dummy
> def ping
> 'pong'
> end
> end
>
> class HTTPAccessDenied < WEBrick::HTTPServerError; end
>
> #defaults
> basedir =
> File::dirname(File::expand_path(__FILE__)).split('/')[0..-2].join('/')
> logfilename = 'dummy.log'
> docroot = File.join(basedir,"html")
>
> s=WEBrick::HTTPServer.new(
> :BindAddress => "127.0.0.1",
> :Port => 3000,
> :Logger => WEBrick::Log::new(logfilename,
> WEBrick::Log::INFO),
> :DocumentRoot => docroot
> )
>
> srv = SOAP::RPC::SOAPlet.new
> srv.add_servant(Dummy.new,'urn:FWControl')
>
>
> # Mount it at somewhere.
> s.mount("/soap", srv)
> trap("INT"){ s.shutdown }
> s.start
>
> ### dummy_client.rb
> #!/usr/bin/ruby
> $LOAD_PATH.unshift File.join(File.dirname(__FILE__), "..","lib")
> require 'test/unit'
> require 'soap/rpc/driver'
>
> URL="http://127.0.0.1:3000/...
> NS="urn:Dummy"
>
> class DummySoap < Test::Unit::TestCase
> def setup
> @proxy = SOAP::RPC::Driver.new(URL,NS)
> @proxy.add_method('ping')
> end
> def test_ping_pong
> assert_equal('pong',@proxy.ping)
> end
> end
>
>

Paul Battley

5/14/2005 1:26:00 PM

On 14/05/05, jm <jeffm@ghostgun.com> wrote:
>
> Seems that SOAP::RPC::StandaloneServer uses inherits from
> Logger::Application which uses the call to
> Logger::debug(progname = nil, &block) which is different to the call
> to WEBrick::Logger.debug(msg). So that changing the logger, thusly,
>
> logger = Logger.new(logfilename)
> logger.level = Logger::INFO
>
> s=WEBrick::HTTPServer.new(
> :BindAddress => "127.0.0.1",
> :Port => 3000,
> :Logger => logger
> )
>
> fixes the problem. Any chance this will be straightened out in the next
> release as this through me for a six.

Ah yes, I was hit by the same bug, and just reverted to 1.8.1.

HTTP authentication in WEBrick is also broken in 1.8.2:
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby...
(In Japanese, but I'm sure you can read the diff)

The decode64 issue that affects HTTP authentication is fixed in 1.9;
the logging code is unchanged in the latest version that I have
downloaded. I don't know whether more recent versions of 1.9 address
that as well.

Paul.

NAKAMURA, Hiroshi

5/29/2005 2:08:00 PM

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,

Sorry for late reply.

jm wrote:
> Seems that SOAP::RPC::StandaloneServer uses inherits from
> Logger::Application which uses the call to
> Logger::debug(progname = nil, &block) which is different to the call to
> WEBrick::Logger.debug(msg). So that changing the logger, thusly,
>
> logger = Logger.new(logfilename)
> logger.level = Logger::INFO
>
> s=WEBrick::HTTPServer.new(
> :BindAddress => "127.0.0.1",
> :Port => 3000,
> :Logger => logger
> )
>
> fixes the problem. Any chance this will be straightened out in the next
> release as this through me for a six.

I added methods for the compatibility to soap4r-1.5.4 release. It will
be included in ruby-1.8.3 (already committed). Would you please check
soap4r-1.5.4 or next release of ruby-1.8.3 (preview2 or later).

Regards,
// NaHi
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=79Dr
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jm

5/29/2005 11:33:00 PM

On 30/05/2005, at 12:07 AM, NAKAMURA, Hiroshi wrote:

> I added methods for the compatibility to soap4r-1.5.4 release. It will
> be included in ruby-1.8.3 (already committed). Would you please check
> soap4r-1.5.4 or next release of ruby-1.8.3 (preview2 or later).

Would be glad to. Would you mind adding a note to your soap4r webpage
if you haven't already as this is the first place I look when I have
problems.

much thanks,

J.

comp.lang.ruby

strange error from soap server

jm

jm

Paul Battley

NAKAMURA, Hiroshi

jm

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