Bu::Client now gives you the option to add additional filters to the filter

chain on the base stream, which for the moment is a socket.

I also demonstrate this in the new rot13 test, with a rot13 filter, and a simple
echo protocol.

1 files changed, 80 insertions, 0 deletions

diff --git a/src/tests/rot13.cpp b/src/tests/rot13.cpp
new file mode 100644
index 0000000..e677440
--- /dev/null
+++ b/src/tests/rot13.cpp
@@ -0,0 +1,80 @@
+#include "bu/protocol.h"
+#include "bu/multiserver.h"
+#include "bu/client.h"
+#include "bu/filter.h"
+
+using namespace Bu;
+
+class Rot13Filter : public Filter
+{
+public:
+        Rot13Filter( Stream &next ) :
+                Filter( next )
+        {
+        }
+
+        virtual ~Rot13Filter()
+        {
+        }
+
+        virtual void start()
+        {
+        }
+
+        virtual size_t stop()
+        {
+                return 0;
+        }
+
+        virtual size_t read( void *pBuf, size_t nBytes )
+        {
+                return rNext.read( pBuf, nBytes );
+        }
+        
+        virtual size_t write( const void *pBuf, size_t nBytes )
+        {
+                const char *cBuf = (const char *)pBuf;
+                char *buf = new char[nBytes];
+                for( size_t j = 0; j < nBytes; j++ )
+                {
+                        if( cBuf[j] >= 'a' && cBuf[j] <= 'z' )
+                                buf[j] = (cBuf[j]-'a'+13)%26+'a';
+                        else if( cBuf[j] >= 'A' && cBuf[j] <= 'Z' )
+                                buf[j] = (cBuf[j]-'A'+13)%26+'A';
+                        else
+                                buf[j] = cBuf[j];
+                }
+                rNext.write( buf, nBytes );
+                delete[] buf;
+                return nBytes;
+        }
+};
+
+class Rot13Protocol : public Protocol
+{
+public:
+        void onNewConnection( Bu::Client *pClient )
+        {
+                pClient->pushFilter<Rot13Filter>();
+        }
+
+        void onNewData( Bu::Client *pClient )
+        {
+                pClient->write( pClient->getInput().getStr(), pClient->getInputSize() );
+                pClient->seek( pClient->getInputSize() );
+        }
+};
+
+int main()
+{
+        MultiServer xSrv;
+
+        xSrv.setTimeout( 5 );
+        xSrv.addProtocol( genProtocol<Rot13Protocol>, 9999 );
+
+        for(;;)
+                xSrv.scan();
+
+        return 0;
+}
+