Wiki source code of Web Services-Web Service Consumer
Last modified by Pascal Robert on 2009/03/17 14:18
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author | version | line-number | content |
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1 | == WOWebServiceClient constructor hanging == | ||
2 | |||
3 | It is possible to hang your WO app instance with the WOWebServiceClient constructor unless you set a connection timeout to something other than the java default. To do this, you need to set the command line flag | ||
4 | |||
5 | {{code}} | ||
6 | -Djava.net.connectiontimeout=30 | ||
7 | {{/code}} | ||
8 | |||
9 | By default, the timeout is infinite. In this instance, you would be setting the timeout to 30 seconds. If you do not set a fixed time for the timeout, a refused connection attempt (caused by a non responsive web services server, for instance) will hang your application instance. | ||
10 | |||
11 | == SSL WebServices Problems == | ||
12 | |||
13 | ~1. WOWebServiceClient class can't access to a secure HTTP Web service provider (WO 5.2.2): | ||
14 | |||
15 | Problem: | ||
16 | The com.webobjects.webservices.client.WOWebServiceClient class just throws exception like this one when it tries to read the WSDL from a secure HTTP Web service provider: | ||
17 | |||
18 | {{code}} | ||
19 | |||
20 | java.lang.IllegalArgumentException: Unable to open url: | ||
21 | https://localhost/cgi-bin/WebObjects/Test-Server.woa/ws/Test?wsdl | ||
22 | at com.webobjects.webservices.client.WOWebServiceClient. | ||
23 | initializeFromURL(WOWebServiceClient.java:72) | ||
24 | at com.webobjects.webservices.client.WOWebServiceClient. | ||
25 | <init>(WOWebServiceClient.java:59 | ||
26 | |||
27 | {{/code}} | ||
28 | |||
29 | This problem doesn't seem related to self signed certificate, since I've performed tests with trusted certificate as well. | ||
30 | |||
31 | === Patrick Robinson === | ||
32 | |||
33 | That's strange . . . | ||
34 | |||
35 | I had the same problem when I was trying to run both service and client on my development machine (which has only a self-signed cert), and specifying an HTTPS WSDL address. But after adding my cert to /Library/Java/Home/lib/security/cacerts: | ||
36 | |||
37 | {{code}} | ||
38 | |||
39 | cd /Library/Java/Home/lib/security | ||
40 | sudo keytool -import -keystore cacerts -alias myalias -file mycert.pem | ||
41 | |||
42 | {{/code}} | ||
43 | |||
44 | (The default password for the cacerts keystore is "changeit") | ||
45 | |||
46 | everything works fine. | ||
47 | |||
48 | I also had no trouble accessing either the WSDL or the service, via HTTPS, when the service was run on a system with a valid, trusted cert. | ||
49 | |||
50 | === Francis Labrie === | ||
51 | |||
52 | It's finally not a real bug, thanks to Patrick Robinson and to the JAD tool. This exception is typically thrown when the server certificate is not trusted, i.e. the certificate is self-signed and not stored in the Java trusted keystore, or the hostname is not the same on the server and in the certificate, etc. | ||
53 | |||
54 | The problem is that the initializeFromURL() method of the com.webobjects.webservices.client.WOWebServiceClient class doesn't wrap and forward the catched exceptions, it only throws IllegalArgumentException with a simple " Unable to open url" or " Unable to create service from url" message, without any details. | ||
55 | |||
56 | To avoid such problem, just relax the Java security manager using code like one described here: [[How to Trust Any SSL Certificate>>doc:documentation.Home.Development Architecture.Web Services.Web Services-How to Trust Any SSL Certificate.WebHome]]. | ||
57 | |||
58 | === to Apple Documentation === | ||
59 | |||
60 | [[http:~~/~~/developer.apple.com/documentation/WebObjects/Web_Services/Web_Services/chapter_4_section_3.html>>url:http://developer.apple.com/documentation/WebObjects/Web_Services/Web_Services/chapter_4_section_3.html||shape="rect"]] |