Testsuite: client script faciility for handling optional reponses

Use this to deal with fallout from TLS negotiation failure, where the
server sees leftover encrypted data as garbage commands.

1 files changed, 13 insertions, 4 deletions

diff --git a/test/README b/test/README
index f4eeddbb4..5b3a86966 100644
--- a/test/README
+++ b/test/README
@@ -1023,18 +1023,27 @@ Lines in client scripts are of several kinds:
     line defines the start of expected output from the server. If what is
     received does not match, the client bombs out with an error message.
 
-(2) If a line starts with three plus signs followed by a space, the rest of the
+(2) If a line begins with three question marks and an asterisk, the server
+    is expected to close the connection.
+
+(3) If a line begins with four question marks, the rest of the line defines
+    the start of one or more possible output lines from the server.  When it
+    matches, the client silently repeats the comparison using the next server
+    line.  When the match fails, the client silently proceeds to the next script
+    line with the then-current server output unconsumed.
+
+(4) If a line starts with three plus signs followed by a space, the rest of the
     line specifies a number of seconds to sleep for before proceeding.
 
-(3) If a line begins with three '>' characters and a space, the rest of the
+(5) If a line begins with three '>' characters and a space, the rest of the
     line is input to be sent to the server.  Backslash escaping is done as
     described below, but no trailing "\r\n" is sent.
 
-(4) If a line begin with three '<' characters and a space, the rest of the
+(6) If a line begin with three '<' characters and a space, the rest of the
     line is a filename; the content of the file is inserted intto the script
     at this point.
 
-(5) Otherwise, the line is an input line line that is sent to the server. Any
+(7) Otherwise, the line is an input line line that is sent to the server. Any
     occurrences of \r and \n in the line are turned into carriage return and
     linefeed, respectively. This is used for testing PIPELINING.
     Any sequences of \x followed by two hex digits are converted to the equvalent