SERVEFILE_DEFAULT_PORT and SERVEFILE_SECONDARY_PORT can be used to
specify ports used in the servefile tests. This can be useful if the
default port 8080 and the secondary port 8081 (for the -p test) are
already in use. To allow automatic choosing of a free port 0 can be
specified to tell the test code to automatically select a free port.
SERVEFILE_DEFAULT_PORT and SERVEFILE_SECONDARY_PORT can be used to specify ports used in the servefile tests. This can be useful if the default port 8080 and the secondary port 8081 (for the -p test) are already in use. To allow automatic choosing of a free port 0 can be specified to tell the test code to automatically select a free port.