| @protocol TTransport <NSObject> | 
 |  | 
 |   /** | 
 |    * Guarantees that all of len bytes are read | 
 |    * | 
 |    * @param buf Buffer to read into | 
 |    * @param off Index in buffer to start storing bytes at | 
 |    * @param len Maximum number of bytes to read | 
 |    * @return The number of bytes actually read, which must be equal to len | 
 |    * @throws TTransportException if there was an error reading data | 
 |    */ | 
 | - (int) readAll: (uint8_t *) buf offset: (int) off length: (int) len; | 
 |  | 
 | - (void) write: (const uint8_t *) data offset: (unsigned int) offset length: (unsigned int) length; | 
 |  | 
 | - (void) flush; | 
 | @end |