Re: HttpUrlConnection.getInputStream() returns empty
Hi David,
My environment is Tomcat 4.1.18 + Sun JDK 1.4. I do
not use JSP and in my case a servlet invokes a java
class.
Now I got solution to my problem. The issue was that
the InputStream.avaulable() was returning 0 even
through there is byates to read.
My old code for reading bytes from the stream was like
this..
InputStream is = ..
byte[] b = new byte[is.available()];
is.read(b);
I modified this to...
ArrayList lines = new ArrayList();
BufferedReader r = new BufferedReader
(new InputStreamReader(in));
String line = null;
while ( (line=r.readLine()) != null )
{
if (StringUtils.isNotEmpty(line))
{
lines.add(line.trim());
}
}
Now I am getting the contents from the stream.
From the JSSE Ref Guide:
Implementation Note: Due to the complexity of the SSL
and TLS protocols, it is difficult to predict whether
incoming bytes on a connection are handshake or
application data, and how that data might affect the
current connection state (even causing the process to
block). In the Sun JSSE implementation, the
available() method on the object obtained by
SSLSocket.getInputStream() returns a count of the
number of application data bytes successfully
decrypted from the SSL connection but not yet read by
the application.
Thanks,
George
--- David Goodenough [EMAIL PROTECTED]
wrote:
Could you list your operating environment. I have
(see my other note) a
very similar problem, and I think that by working
out which components
are common to both of us we can narrow this down
much quicker.
I am using 5.0.27 Tomcat (I also used 4.1 and got
the same problem), I am
using JSPs with JSTL and the IO taglib, I am running
on Sun JVM 1.4.2_05
(also tried 1.4.1) on a Linux system. As you are
not using JSPs etc that
just about leaves Tomcat itself, JVM and the
operating system.
David
On Monday 26 July 2004 19:15, Honey George wrote:
Hi All,
I am facing a problem with HttpUrlConnection in
Tomcat. I wanted to extract the contents of an
https
enabled URL,
actually from the same site where my application
is
running(Will not try to access external URLs). My
program will look
like this.
===
=== import
java.net.*;
import java.util.*;
import java.io.*;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import javax.net.ssl.*;
.
System.getProperty(java.protocol.handler.pkgs,javax.net.ssl);
java.security.Security.addProvider(new
com.sun.net.ssl.internal.ssl.Provider());
.
HostnameVerifier hv = new
HostnameVerifier()
{
public boolean verify(String
urlHostName,
SSLSession session)
{
System.out.println(Warning: URL
Host:
+urlHostName+ vs. +session.getPeerHost());
return true;
}
};
HttpsURLConnection.setDefaultHostnameVerifier(hv);
// Create a trust manager that does not
validate certificate chains
TrustManager[] trustAllCerts = new
TrustManager[]{
new X509TrustManager() {
public
java.security.cert.X509Certificate[]
getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(
java.security.cert.X509Certificate[]
certs, String authType) {
}
public void checkServerTrusted(
java.security.cert.X509Certificate[]
certs, String authType) {
}
}
};
// Install the all-trusting trust manager
try
{
SSLContext sc =
SSLContext.getInstance(SSL);
sc.init(null, trustAllCerts, new
java.security.SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
}
HttpURLConnection httpCon =
(HttpURLConnection) new
java.net.URL(https://www.abc.com/test.txt;).openConnection();
httpCon.setRequestProperty(USER_AGENT_HEADER_FIELD,
);
httpCon.setRequestProperty(ACCEPT_HEADER_FIELD,
text/plain);
return httpCon;
InputStream is = httpCon.getInputStream();
===
=== Here the
problem is that the
InputStream does not
return any contents when executed from inside
Tomcat.
But I am able to
extract the contents of the URL when I execute
outside
tomcat in a command line program. The Connection
object returned
by new
java.net.URL(https://www.abc.com/test.txt;)
is
sun.net.www.protocol.https.HttpsURLConnectionImpl.
Can I get some help on this one?
Thanks Regards,
George
Re: SSL Certificate Errors
I do not know what caused this problem..but you can solve this by explicitely trusting all the certificates. And this will work if client side certs are not used. You can find information on how to do this in the following URL. http://javaalmanac.com/egs/javax.net.ssl/TrustAll.html Thanks, George --- Craig, William S. [EMAIL PROTECTED] wrote: Hi, I'm experiencing the following errors while running Tomcat 4.1.27 on Win2K. I have a U.S. Government certificate in X.509 format trusted on Tomcat. I'm trying to communicate on SSL, but it appears that my certificate isn't trusted. I followed the instructions - any ideas on why my certificate isn't being trusted (if that's my problem) Thanks!! cacerts file: pa-ng-app, Jun 16, 2004 trustedCertEntry, Certificate fingerprint (MD5): DD:3D:8F.etc Errors: Exception Message: java.security.cert.CertificateException: Could not find trusted certificate javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: Could not find trusted certificate at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.a(DashoA6275) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA6275) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA6275) at com.sun.net.ssl.internal.ssl.SunJSSE_az.a(DashoA6275) at com.sun.net.ssl.internal.ssl.SunJSSE_az.a(DashoA6275) at com.sun.net.ssl.internal.ssl.SunJSSE_ax.a(DashoA6275) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA6275) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.j(DashoA6275) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(DashoA6275) at sun.net.www.protocol.https.HttpsClient.afterConnect(DashoA6275) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(DashoA 6275) at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(DashoA6275) at com.plumtree.content.client.http.diagnostic.DiagnosticTestsUtil.connectAndCh eckResponseCode(DiagnosticTestsUtil.java:127) at com.plumtree.content.client.http.diagnostic.DiagnosticTests.testConnectionWi thPortal(DiagnosticTests.java:644) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 ) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.plumtree.content.client.http.diagnostic.DiagnosticTests.executeTestMetho d(DiagnosticTests.java:202) at com.plumtree.content.client.http.diagnostic.DiagnosticTests.executeDiagnosti cTests(DiagnosticTests.java:178) at com.plumtree.content.client.http.diagnostic.DiagnosticTests.getDiagnosticTes tResults(DiagnosticTests.java:150) at org.apache.jsp.index_0002dinclude_0002ddiagnostics_jsp._jspService(index_000 2dinclude_0002ddiagnostics_jsp.java:53) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137) at ...etcetc. ___ALL-NEW Yahoo! Messenger - all new features - even more fun! http://www.allnewmessenger.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: HttpUrlConnection.getInputStream() returns empty
Hi reynir,
I have made the changes as per you suggestion and I
am getting the response code as 200. But still the
inputstream returns empty, is.available() returns 0
bytes.
thanks,
- george
--- Reynir_Þór_Hübner [EMAIL PROTECTED] wrote:
hi,
you could maybe try somthing like the following :
try
{
String str_url = https://www.domain.com;;
URL urlid = new URL(str_url);
HttpsURLConnection conn =
(HttpsURLConnection)urlid.openConnection();
conn.setRequestMethod(GET);
conn.setDoOutput(false);
out.write(RESPONSECODE = +
conn.getResponseCode()+\nbr);
BufferedReader in1 = new BufferedReader(new
InputStreamReader(conn.getInputStream()));
String line;
while ((line = in1.readLine()) != null)
out.write(line +\n);
}
catch (Exception e)
{
e.printStackTrace(System.out);
}
hope it helps
-reynir
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HttpUrlConnection.getInputStream() returns empty
Hi All,
I am facing a problem with HttpUrlConnection in
Tomcat. I wanted to extract the contents of an https
enabled URL,
actually from the same site where my application is
running(Will not try to access external URLs). My
program will look
like this.
==
import java.net.*;
import java.util.*;
import java.io.*;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import javax.net.ssl.*;
..
System.getProperty(java.protocol.handler.pkgs,javax.net.ssl);
java.security.Security.addProvider(new
com.sun.net.ssl.internal.ssl.Provider());
..
HostnameVerifier hv = new HostnameVerifier()
{
public boolean verify(String urlHostName,
SSLSession session)
{
System.out.println(Warning: URL Host:
+urlHostName+ vs. +session.getPeerHost());
return true;
}
};
HttpsURLConnection.setDefaultHostnameVerifier(hv);
// Create a trust manager that does not
validate certificate chains
TrustManager[] trustAllCerts = new
TrustManager[]{
new X509TrustManager() {
public
java.security.cert.X509Certificate[]
getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(
java.security.cert.X509Certificate[]
certs, String authType) {
}
public void checkServerTrusted(
java.security.cert.X509Certificate[]
certs, String authType) {
}
}
};
// Install the all-trusting trust manager
try
{
SSLContext sc =
SSLContext.getInstance(SSL);
sc.init(null, trustAllCerts, new
java.security.SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
}
HttpURLConnection httpCon =
(HttpURLConnection) new
java.net.URL(https://www.abc.com/test.txt;).openConnection();
httpCon.setRequestProperty(USER_AGENT_HEADER_FIELD,
);
httpCon.setRequestProperty(ACCEPT_HEADER_FIELD,
text/plain);
return httpCon;
InputStream is = httpCon.getInputStream();
==
Here the problem is that the InputStream does not
return any contents when executed from inside Tomcat.
But I am able to
extract the contents of the URL when I execute outside
tomcat in a command line program. The Connection
object returned
by new java.net.URL(https://www.abc.com/test.txt;)
is sun.net.www.protocol.https.HttpsURLConnectionImpl.
Can I get some help on this one?
Thanks Regards,
George
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all new features - even more fun! http://www.allnewmessenger.com
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Apache-Tomcat combination, Best Practices
Hi, First of all I assume I am posting to the correct mailing list, ignore this otherwise. I am trying to configure Apache Server Tomcat for running my JSPs static pages. Can anybody give me the best way of doing this. Where should I place my static HTML files where should I place my JSP pages. Also how do I redirect all the JSP requests to the Tomcat. I basically want all my static pages to be processed by Apache server the JSP pages by tomcat. I am Using Apache2,tomcat-4.1.18 mod_jk2 connector. George __ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
