improvements to the server

frameserver/Buffer.cpp

@@ -1,6 +1,6 @@
 #include "Buffer.h"
 
-Buffer::Buffer( int _id )
+Buffer::Buffer( std::string _id )
 {
   id = _id;
 }
@@ -17,13 +17,19 @@ void Buffer::set(frame_t data)
   }
 }
 
+void Buffer::set_id(std::string _id)
+{
+	Glib::Mutex::Lock lock(mutex_);
+	id = _id;
+}
+
 frame_t Buffer::get()
 {
   Glib::Mutex::Lock lock(mutex_);
   return frame;
 }
 
-int Buffer::get_id()
+std::string Buffer::get_id()
 {
   Glib::Mutex::Lock lock(mutex_);
   return id;

frameserver/Buffer.h

@@ -1,5 +1,6 @@
 #ifndef __BUFFER_H_
 #define __BUFFER_H_
+#include <string>
 #include <glibmm.h>
 #include "defines.h"
 
@@ -9,15 +10,17 @@
 class Buffer : public sigc::trackable
 {
   public:
-    Buffer(int _id);
+    Buffer(std::string _id);
     ~Buffer();
     
     void set(frame_t);
     frame_t get();
-    int get_id();
+    
+    std::string get_id();
+    void set_id(std::string id);
     
   private:
-    int id;
+    std::string id;
     frame_t frame;
   
     Glib::Mutex mutex_;

frameserver/Buffers.cpp

@@ -2,12 +2,12 @@
 
 Buffers::Buffers() 
 {
-  id = 0;
+  id = "";
 }
 
 Buffers::Buffers(int _bufnum)
 {
-  id = 0;
+  id = "";
   for( int i = 0; i < _bufnum; i++)
     add();
 }
@@ -27,11 +27,11 @@ Buffer* Buffers::get(int index)
 void Buffers::add()
 {
   Glib::Mutex::Lock lock(mutex_);
-  id += 1;
-  buffers.push_back( new Buffer(id) );
+  id += "1";
+  buffers.push_back( new Buffer( id ) );
 }
 
-void Buffers::remove(int _id)
+void Buffers::remove(std::string _id)
 {
   Glib::Mutex::Lock lock(mutex_);
   int size = buffers.size();

frameserver/Buffers.h

@@ -10,6 +10,7 @@
 
 #include <glibmm.h>
 #include <vector>
+#include <string>
 
 #include <time.h>
 
@@ -27,13 +28,13 @@ class Buffers : public sigc::trackable
     ~Buffers();
     
     void add();
-    void remove(int);
+    void remove(std::string);
     
     Buffer* get(int);
     
   private:
     vector<Buffer*> buffers;
-    int id;
+    std::string id;
     Glib::Mutex mutex_;
 };
 #endif

frameserver/Server.cpp

@@ -1,11 +1,8 @@
 #include "Server.h"
 
-Server::Server(int _numbufs, int _port )
+Server::Server(int _port )
 {
-  for(int i = 0; i < _numbufs; i++)
-    buffers.push_back( new Buffer(i) );
-    
-  port = _port;
+	port = _port;
 }
 
 Server::~Server()
@@ -48,6 +45,8 @@ void Server::listen()
     while (1)
     {
       frame_t frame;
+
+      // creating the buffer each time is faster than zeroing it out
       boost::array<char, BUFLEN> recv_buf;
       udp::endpoint remote_endpoint;
       boost::system::error_code error;
@@ -59,6 +58,38 @@ void Server::listen()
       if( packetcounter % 1000 == 0 ) 
         cout << endl << packetcounter << endl;
 
+      // have we encountered this source before?
+      // DEBUG
+      // cout << remote_endpoint << endl;
+      int bufnum = 0;
+      {
+		  Glib::Mutex::Lock lock(mutex_);
+		  int size = endpoints.size();
+		  bool known = false;
+		  for(bufnum = 0; bufnum < size; bufnum++)
+		  {
+			  if(endpoints[bufnum] == remote_endpoint)
+			  {
+				known = true;
+			  	break;
+			  }
+	   	  }
+
+	   	  if( !known && size+1 < NUMBUFS )
+	   	  {
+			// create a new buffer make a note of the endpoint
+			std::stringstream endpointstring;
+			endpointstring << remote_endpoint;
+			cout << "adding new buffer for " << remote_endpoint <<  endl;
+			buffers.push_back( new Buffer( endpointstring.str() ) );
+			endpoints.push_back( remote_endpoint );
+		  }
+			
+		  // discard packet, we're not accepting any more sources!
+	      else if( size+1 >= NUMBUFS )
+	      	break;
+	  }
+      
       for(int i = 0; i < HEIGHT; i++)
       {
         for(int j = 0; j < WIDTH; j++)
@@ -79,9 +110,9 @@ void Server::listen()
         {
         Glib::Mutex::Lock lock(mutex_);
         // convert ascii to integer value
-        if( recv_buf[0]-49 < buffers.size() ) 
+        if( bufnum < buffers.size() ) 
           {
-            buffers[ recv_buf[0]-49 ]->set(frame);
+            buffers[ bufnum ]->set(frame);
           }
         }
         
@@ -122,7 +153,7 @@ void Server::mix()
       size = buffers.size();
     }
 
-    for(int x = 0; x < 6; x++)
+    for(int x = 0; x < size; x++)
     {
       {
         Glib::Mutex::Lock lock(mutex_);
@@ -162,8 +193,8 @@ void Server::mix()
       {
         cout << frame.segments[i].r;
       }
-      cout << endl << endl; //*/
-    }
+      cout << endl << endl;
+    } //*/
     
     usleep( 25000 );
   }

frameserver/Server.h

@@ -4,6 +4,7 @@
 #include <iostream>
 #include <string>
 #include <vector>
+#include <list>
 #include <boost/array.hpp>
 #include <boost/asio.hpp>
 
@@ -18,7 +19,7 @@ using namespace std;
 class Server : public sigc::trackable
 {
 public:
-  Server(int _numbufs, int _port);
+  Server(int _port);
   ~Server();
   
   void listen();
@@ -27,8 +28,12 @@ public:
   
 private:
   Glib::Mutex mutex_;
+  
   vector<Glib::Thread*> threads;
   vector<Buffer*> buffers;
+  vector<udp::endpoint> endpoints;
+  
+  int numbufs;
   
   int port;
 };

frameserver/servertest.sh

@@ -2,5 +2,5 @@
 
 while [ 1 ]
 do
-	echo "$1" | cat - display | netcat -q 0.1 -u 127.0.0.1 4321
+	echo "$1" | cat - display | netcat -p5000$1 -q 0.1 -u 127.0.0.1 4321
 done

frameserver/servertest.sh~

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+while [ 1 ]
+do
+	echo "$1" | cat - display | netcat -q 0.1 -u 127.0.0.1 4321
+done

frameserver/test_server.cpp

@@ -22,7 +22,7 @@ int main(void)
   // our main loop with support for signals and all that jazz
   Glib::RefPtr<Glib::MainLoop> Main = Glib::MainLoop::create();
     
-  Server server(NUMBUFS,4321);
+  Server server(4321);
   server.launch_threads();
   
   Main->run();