update README.md

README.md

@@ -1,2 +1,25 @@
 # clj-util-webdav
 This allows interaction with WebDAV enabled document stores using the sardine library.
+
+To test using https with a self signed certificate:
+
+```bash
+
+tee test-resources/webdav.properties > /dev/null  << EOF
+base-url = https://foo.shh.mpg.de/dav
+user-name = cat
+password = hat
+test.dav-prefix = dav/
+EOF
+
+# On mac find JAVA_HOME using
+# /usr/libexec/java_home
+# copy our java trust store and add our self signed cert
+cp /Library/Java/JavaVirtualMachines/jdk1.8.0_72.jdk/Contents/Home/jre/lib/security/cacerts .
+#echo -n | openssl s_client -connect foo.shh.mpg.de:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > foo.crt
+# The above fails becuase this server has multiple identities (i.e. the first is bar-foo.mpg.shh.de but we want foo.shh.mpg.de)
+echo -n | openssl s_client -connect foo.shh.mpg.de:443 -servername foo.shh.mpg.de | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > foo.crt
+keytool -import -keystore cacerts -trustcacerts -storepass changeit -noprompt -alias foo -file foo.crt
+# test using our trust store copy with our self signed cert installed
+JAVA_TOOL_OPTIONS="-Djavax.net.ssl.trustStore=cacerts" lein test
+```