Hello, We have a requirement to test a TCP service which expects requests in length-prefixed binary form and responds with data structured in the same way.
We have experimentally extended the TCP sampler code to support this by adding a "Length Prefixed Binary Data" option to the GUI. With this option checked: a) The TCPSampler sample() method treats the input request text as a hexadecimal string and converts it to a byte array. Conversely it reads a byte array and converts it to a hexadecimal string. b) The TCPClient has been extended to support the following new methods: void write(OutputStream os, byte[] b); byte [] readLengthPrefixed(InputStream is); The readLengthPrefixed method expects the first 2 bytes from the stream to contain the length (binary) of data to follow and reads this number of subsequent bytes returning a byte array containing both the length and data bytes. e.g. Request/Response String: "002d482d2d2d3e454e414320544350495020484541525420424541543c2d2d2d5443504449414c2056312e30312020" Input/Output Byte Array: [0x00,0x2d, 0x48, ......, 0x20] This is a simple but limited approach, it does not permit the transmission of non-length prefixed binary data nor does it support length prefixed character data. Finally as it is implemented the length prefix must be input as two byte binary (input as hexadecimal string) rather than being calculated or input as character decimal. There are options to make the solution more flexible but before spending time on these we would like to know whether the minimal approach taken above would be considered for inclusion in a future JMeter release? Thanks, Oghie. ********************************************************************** E-mail disclaimer FEXCO Dynamic Currency Conversion Limited, registered in Ireland, No. 246289. Registered Office: FEXCO Centre, Iveragh Road, Killorglin, Co. Kerry. This message, including any attachments, is confidential. If you are not the named recipient, please contact the sender and delete the email from your system. ********************************************************************** --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
