From: Adriana Draghici <adriana008@gmail.com>
Date: Thu, 11 Feb 2010 17:15:37 +0000 (+0200)
Subject: report - described the commander-server interaction
X-Git-Tag: getopt_long~163
X-Git-Url: http://p2p-next.cs.pub.ro/gitweb/?a=commitdiff_plain;h=849b87b0892ed36359bb51dd4bdc35187f691578;p=cs-p2p-next.git

report - described the commander-server interaction
---

diff --git a/report/test.tex b/report/test.tex
index c3ac8f9..256f79b 100644
--- a/report/test.tex
+++ b/report/test.tex
@@ -2,12 +2,41 @@
 We emphasize the disadvantages (not scalable)
 \subsection{The new infrastructure}
 
+The new testing infrastructure is implemented as a client-server architecture, in which the 
+Commander application start the Server application and then acts as a client requesting the Server to start BitTorrent clients.
+This system is described in figure \ref{fig:test-arch}.\\
+
+
+The Commander communicates with the Server using the following types of messages:
+
+\begin{itemize}
+ \item START - sent for starting a BitTorrent client.
+	\begin{itemize}
+\item first message contains the type, here START\_MSG
+\item second message contains a Python Dictionary data structure with the parameters
+	needed for starting the client.
+\end{itemize}
+ \item STOP - sent for stopping a running client.
+\begin{itemize}
+\item first message contains the type, here STOP\_MSG
+\item second message contains a string with the client process id.
+ \end{itemize}
+
+ \item ACK - contains $``ACK``$ and is sent by the server after receiving the message type
+ \item ACK PID - contains $''ACK <PID>''$ sent by the server after starting a client, PID is the process id.
+ \item ERROR - contains $"ERROR <error-message>``$ sent by the server when the parameters received are incorrect or the BT client can not be started.
+\end{itemize}
+We intend to extend this communication protocol with status messages sent by the Commander to check
+the BT client's progress.
+
 \begin{figure}[h]
 \begin{center}
 \includegraphics[width = 4.5in, height = 2.2in]{img/Diagram1.png}
 \end{center}
 \caption{Client-Server architecture for interaction with BitTorrent clients.}
+\label{fig:test-arch}
 \end{figure}
-
-
+\subsection{Commander}\label{sec:comm}
+\input{test/comm.tex}
+\subsection{Server}\label{sec:server}
 \input{test/server.tex}
\ No newline at end of file
diff --git a/report/test/comm.tex b/report/test/comm.tex
new file mode 100644
index 0000000..e69de29
diff --git a/report/test/server.tex b/report/test/server.tex
index a51c00e..1ca8334 100644
--- a/report/test/server.tex
+++ b/report/test/server.tex
@@ -1,2 +1,6 @@
 The server application resides on a virtual machine on which several BT clients are installed. It
-is started by connecting remotely using ssh, and executes as a daemon process\cite{daemon} 
+is started by connecting remotely using ssh, and executes as a daemon process\cite{daemon}.
+This server is written in Python, using modules for socket communication and process handling with
+functions similar to the ones from POSIX C. 
+
+ 
\ No newline at end of file