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move java environment parameter setting disabling SNI (Server Name Indicator) support for https connections from code to startup script allowing admin to ~easy/transparent alter the YaCy default FALSE setting.

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Background: some user report problem with connecting/crawling some sites via https which require SNI support (by default switched off in YaCy). On the other hand systems not demanding SNI support are sometimes not properly configured and due to a bug/feature in java 1.7 connection is aborted. The later is more often the case, so the default is still fine. With the java start parameter expert user can no alter the startparameter to -Djsse.enableSNIExtension=true (java default) if they crawl more hosts requiring SNI support.
The alternative to let YaCy try both during https handshake (deep inside the httpclient) is not pursut at this time.
This commit is contained in:
reger 2015-07-29 23:30:05 +02:00
parent fbeae20b3a
commit 2fb6ebe88a
4 changed files with 9 additions and 5 deletions
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2
source/net/yacy/yacy.java
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@ -598,8 +598,6 @@ public final class yacy {
public static void main(String args[]) {
try {
System.setProperty("jsse.enableSNIExtension", "false"); // fix a ssl problem in Java 1.7, see http://teknosrc.com/javax-net-ssl-sslprotocolexception-handshake-alert-unrecognized_name-solved/
// check assertion status
//ClassLoader.getSystemClassLoader().setDefaultAssertionStatus(true);
boolean assertionenabled = false;

4
startYACY.bat
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@ -18,7 +18,9 @@ if exist DATA\SETTINGS\httpProxy.conf GoTo :RENAMEINDEX
if exist DATA\SETTINGS\yacy.conf GoTo :GETSTARTOPTS
:STARTJAVA
set javacmd=%javacmd% -Djava.awt.headless=true -Dsolr.directoryFactory=solr.MMapDirectoryFactory -Dfile.encoding=UTF-8
set javacmd=%javacmd% -Djava.awt.headless=true -Dsolr.directoryFactory=solr.MMapDirectoryFactory -Dfile.encoding=UTF-8 -Djsse.enableSNIExtension=false
Rem -Djsse.enableSNIExtension=false fix a ssl problem in Java 1.7, see http://teknosrc.com/javax-net-ssl-sslprotocolexception-handshake-alert-unrecognized_name-solved/
Rem Starting YaCy
Echo Generated classpath:%CLASSPATH%
Echo JRE Parameters:%javacmd%

4
startYACY.sh
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@ -6,7 +6,9 @@ PIDFILE="yacy.pid"
OS="`uname`"
#get javastart args
JAVA_ARGS="-server -Djava.awt.headless=true -Dfile.encoding=UTF-8";
JAVA_ARGS="-server -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djsse.enableSNIExtension=false";
#rem -Djsse.enableSNIExtension=false fix a ssl problem in Java 1.7, see http://teknosrc.com/javax-net-ssl-sslprotocolexception-handshake-alert-unrecognized_name-solved/
#JAVA_ARGS="-verbose:gc -XX:+PrintGCTimeStamps -XX:+PrintGCDetails $JAVA_ARGS";
#check if OS is Sun Solaris or one of the OpenSolaris distributions and use different version of id if necessary

4
startYACY_debug.bat
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@ -17,7 +17,9 @@ if exist DATA\SETTINGS\httpProxy.conf GoTo :RENAMEINDEX
if exist DATA\SETTINGS\yacy.conf GoTo :GETSTARTOPTS
:STARTJAVA
set javacmd=%javacmd% -XX:-UseGCOverheadLimit -Djava.awt.headless=true -Dfile.encoding=UTF-8
set javacmd=%javacmd% -XX:-UseGCOverheadLimit -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djsse.enableSNIExtension=false
Rem -Djsse.enableSNIExtension=false fix a ssl problem in Java 1.7, see http://teknosrc.com/javax-net-ssl-sslprotocolexception-handshake-alert-unrecognized_name-solved/
Rem Starting YaCy
Echo Generated classpath:%CLASSPATH%
Echo JRE Parameters:%javacmd%