/**
* Starts asynchronous connect operation...
*
- * @param <type> $url
+ * @fixme Can we do the open-socket fully async to? (need write select infrastructure)
+ *
+ * @param string $url
*/
public function connect($url)
{
$this->state = 'waiting';
}
+ /**
+ * Send some fun data off to the server.
+ *
+ * @param string $buffer
+ */
function send($buffer)
{
- echo "Writing...\n";
- var_dump($buffer);
fwrite($this->socket, $buffer);
}
+ /**
+ * Read next packet of data from the socket.
+ *
+ * @return string
+ */
function read()
{
- echo "Reading...\n";
$buffer = fread($this->socket, 65536);
- var_dump($buffer);
return $buffer;
}
+ /**
+ * Build HTTP request headers.
+ *
+ * @param string $host
+ * @param string $path
+ * @return string
+ */
protected function httpOpen($host, $path)
{
$lines = array(
/**
* Take a chunk of input over the horn and go go go! :D
+ *
* @param string $buffer
*/
- function handleInput($socket)
+ public function handleInput($socket)
{
if ($this->socket !== $socket) {
throw new Exception('Got input from unexpected socket!');
}
- $buffer = $this->read();
+ try {
+ $buffer = $this->read();
+ $lines = explode(self::CRLF, $buffer);
+ foreach ($lines as $line) {
+ $this->handleLine($line);
+ }
+ } catch (Exception $e) {
+ common_log(LOG_ERR, "$this->id aborting connection due to error: " . $e->getMessage());
+ fclose($this->socket);
+ throw $e;
+ }
+ }
+
+ protected function handleLine($line)
+ {
switch ($this->state)
{
case 'waiting':
- $this->handleInputWaiting($buffer);
+ $this->handleLineWaiting($line);
break;
case 'headers':
- $this->handleInputHeaders($buffer);
+ $this->handleLineHeaders($line);
break;
case 'active':
- $this->handleInputActive($buffer);
+ $this->handleLineActive($line);
break;
default:
- throw new Exception('Invalid state in handleInput: ' . $this->state);
+ throw new Exception('Invalid state in handleLine: ' . $this->state);
}
}
- function handleInputWaiting($buffer)
+ /**
+ *
+ * @param <type> $line
+ */
+ protected function handleLineWaiting($line)
{
- common_log(LOG_DEBUG, "$this->id Does this happen? " . $buffer);
+ $bits = explode(' ', $line, 3);
+ if (count($bits) != 3) {
+ throw new Exception("Invalid HTTP response line: $line");
+ }
+
+ list($http, $status, $text) = $bits;
+ if (substr($http, 0, 5) != 'HTTP/') {
+ throw new Exception("Invalid HTTP response line chunk '$http': $line");
+ }
+ if ($status != '200') {
+ throw new Exception("Bad HTTP response code $status: $line");
+ }
+ common_log(LOG_DEBUG, "$this->id $line");
$this->state = 'headers';
- $this->handleInputHeaders($buffer);
}
- function handleInputHeaders($buffer)
+ protected function handleLineHeaders($line)
{
- $lines = explode(self::CRLF, $buffer);
- foreach ($lines as $line) {
- if ($line == '') {
- $this->state = 'active';
- common_log(LOG_DEBUG, "$this->id connection is active!");
- } else {
- common_log(LOG_DEBUG, "$this->id read HTTP header: $line");
- $this->responseHeaders[] = $line;
- }
+ if ($line == '') {
+ $this->state = 'active';
+ common_log(LOG_DEBUG, "$this->id connection is active!");
+ } else {
+ common_log(LOG_DEBUG, "$this->id read HTTP header: $line");
+ $this->responseHeaders[] = $line;
}
}
- function handleInputActive($buffer)
+ protected function handleLineActive($line)
{
- // One JSON object on each line...
- // Will we always deliver on packet boundaries?
- $lines = explode("\n", $buffer);
- foreach ($lines as $line) {
- $data = json_decode($line, true);
- if ($data) {
- $this->handleJson($data);
- } else {
- common_log(LOG_ERR, "$this->id received bogus JSON data: " . $line);
- }
+ if ($line == "") {
+ // Server sends empty lines as keepalive.
+ return;
+ }
+ $data = json_decode($line);
+ if ($data) {
+ $this->handleJson($data);
+ } else {
+ common_log(LOG_ERR, "$this->id received bogus JSON data: " . var_export($line, true));
}
}
- abstract function handleJson(array $data);
+ abstract protected function handleJson(stdClass $data);
}