DO NOT REPLY [Bug 45174] TCPSampler support for sending files

https://issues.apache.org/bugzilla/show_bug.cgi?id=45174

--- Comment #2 from Soumen Sarkar <[email protected]> 2009-11-20 13:36:49 UTC ---
I extended JMeter TCPClient to implement "read from file" feature in test plan. 

The extension works as follows for end users:

In the TCP Sampler UI, in the field "Text to send" a variable like notation is
allowed. This notation looks like $FILE{path}. For example, in my test plan I
am using $FILE{C:\work\projects\JMeter\test_binary_file_send.msg}. In the field
text and $FILE{path} can be mixed. All $FILE{path} is substituted with file
content and sent to system under test (SUT).

From java coding standpoint, the extension is developed as follows:

1. Implement org.apache.jmeter.protocol.tcp.sampler.TCPClient with your own
class

http://svn.apache.org/repos/asf/jakarta/jmeter/trunk/src/protocol/tcp/org/apache/jmeter/protocol/tcp/sampler/TCPClient.java

as shown below:

package com.acme.jmeter.protocol.tcp.sampler;

import java.io.*;
import java.net.*;
import java.util.*;
import org.apache.log.Logger;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jmeter.protocol.tcp.sampler.TCPClient;

public class TCPClientImplWithFileReader implements TCPClient 
{
...
...
}

2. Override the following method:

 /**
     *
     * @param os -
     *            OutputStream for socket
     * @param is -
     *            InputStream to be written to Socket
     */
    void write(OutputStream os, InputStream is);

    /**
     *
     * @param os -
     *            OutputStream for socket
     * @param s -
     *            String to write
     */
    void write(OutputStream os, String s);

What you need to do is parse the content in 2nd parameter to look for
$FILE{path} pattern and substitute with file content. Then write the whole
thing to OutputStream.

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