1: <?php
 2: 
 3: namespace PHPFastCGI\FastCGIDaemon\Connection;
 4: 
 5: use PHPFastCGI\FastCGIDaemon\Exception\ConnectionException;
 6: 
 7: /**
 8:  * The connection interface defines a set of methods that abstract operations
 9:  * on incoming connections from the method by which they were accepted.
10:  */
11: interface ConnectionInterface
12: {
13:     /**
14:      * Read data from the connection.
15:      *
16:      * @param int $length Number of bytes to read
17:      *
18:      * @return string Buffer containing the read data
19:      *
20:      * @throws ConnectionException On failure
21:      */
22:     public function read($length);
23: 
24:     /**
25:      * Write data to the connection.
26:      *
27:      * @param string $buffer Buffer containing the data to write
28:      *
29:      * @throws ConnectionException On failure
30:      */
31:     public function write($buffer);
32: 
33:     /**
34:      * Tests to see if the connection has been closed.
35:      *
36:      * @return bool True if the connection has been closed, false otherwise
37:      */
38:     public function isClosed();
39: 
40:     /**
41:      * Closes the connection it from the pool.
42:      */
43:     public function close();
44: }
45: