def negotiate( socket, version )
server_version = ""
@header_lines = []
loop do
server_version = socket.readline
break if server_version.nil? || VERSION_LINE.match( server_version )
@header_lines << server_version
end
if !REQUIRED_VERSION_PATTERN.match( server_version )
raise Net::SSH::Exception,
"incompatible ssh version #{server_version.inspect}"
end
if @logger.debug?
@logger.debug "remote server is #{server_version.chomp.inspect}"
end
socket.print "#{version}\r\n"
return server_version.chomp
end