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- http – components for load testing servers that use HTTP (web servers, soap services, xml-rpc services, etc)
- ftp – components for load testing ftp servers
- java – components for load testing java components
- jdbc – components for load testing database servers using jdbc
- jndi – components for load testing jndi (currently non-functional)
- ldap – components for load testing LDAP servers
- mail – components for load testing mail servers
- tcp – components for load testing TCP services
- jms – components for load testing JMS messaging services
As a general rule, all samplers related to HTTP will reside in “http” directory. The exception to the rule is the Tomcat5 monitor. It is separate, because the functionality of the monitor is slightly different than stress or functional testing. It may eventually be reorganized, but for now it is in its own directory. In terms of difficulty, writing visualizers is probably one of the harder plugins to write.