adds manual input options for iostream transport

websocketpp/transport/iostream/connection.hpp

@@ -112,6 +112,22 @@ public:
 		return in;
 	}
 	
+	/// Manual input supply
+	/**
+	 * Copies bytes from buf into WebSocket++'s input buffers. Bytes will be 
+	 * copied from the supplied buffer to fullfull any pending library reads. It
+	 * will return the number of bytes successfully processed. If there are no 
+	 * pending reads readsome will return immediately. Not all of the bytes may
+	 * be able to be read in one call
+	 */
+	size_t readsome(const char *buf, size_t len) {
+	    // this serializes calls to external read.
+		scoped_lock_type lock(m_read_mutex);
+		
+		return this->readsome_impl(buf,len);
+	}
+	
+	
 	/// Tests whether or not the underlying transport is secure
 	/**
 	 * iostream transport will return false always because it has no information
@@ -304,12 +320,12 @@ private:
 	void read(std::istream &in) {
         m_alog.write(log::alevel::devel,"iostream_con read");
 		
-		while (in.good()) {
-		    if (!m_reading) {
+		while (in.good()) {  
+            if (!m_reading) {
                 m_elog.write(log::elevel::devel,"write while not reading");
                 break;
-		    }
-		    
+            }
+            
             in.read(m_buf+m_cursor,m_len-m_cursor);
             
             if (in.gcount() == 0) {
@@ -332,6 +348,26 @@ private:
         }
 	}
 	
+	size_t readsome_impl(const char * buf, size_t len) {
+	    m_alog.write(log::alevel::devel,"iostream_con readsome");
+	    
+	    if (!m_reading) {
+            m_elog.write(log::elevel::devel,"write while not reading");
+            return 0;
+        }
+        
+        size_t bytes_to_copy = std::min(len,m_len-m_cursor);
+        
+        std::copy(buf,buf+bytes_to_copy,m_buf);
+        
+        m_cursor += bytes_to_copy;
+        
+        if (m_cursor >= m_bytes_needed) {
+            m_reading = false;
+            m_read_handler(lib::error_code(), m_cursor);
+        }
+	}
+	
 	// Read space (Protected by m_read_mutex)
 	char*			m_buf;
 	size_t          m_len;