original_string: protected function _prepareHeaders()
      {
          $headers = array();
  
          // Set the host header
          if (! isset($this->headers['host'])) {
              $host = $this->uri->getHost();
  
              // If the port is not default, add it
              if (! (($this->uri->getScheme() == 'http' && $this->uri->getPort() == 80) ||
                    ($this->uri->getScheme() == 'https' && $this->uri->getPort() == 443))) {
                  $host .= ':' . $this->uri->getPort();
              }
  
              $headers[] = "Host: {$host}";
          }
  
          // Set the connection header
          if (! isset($this->headers['connection'])) {
              if (! $this->config['keepalive']) {
                  $headers[] = "Connection: close";
              }
          }
  
          // Set the Accept-encoding header if not set - depending on whether
          // zlib is available or not.
          if (! isset($this->headers['accept-encoding'])) {
              if (function_exists('gzinflate')) {
                  $headers[] = 'Accept-encoding: gzip, deflate';
              } else {
                  $headers[] = 'Accept-encoding: identity';
              }
          }
          
          // Set the Content-Type header
          if ($this->method == self::POST &&
             (! isset($this->headers[strtolower(self::CONTENT_TYPE)]) && isset($this->enctype))) {
  
              $headers[] = self::CONTENT_TYPE . ': ' . $this->enctype;
          }
          
          // Set the user agent header
          if (! isset($this->headers['user-agent']) && isset($this->config['useragent'])) {
              $headers[] = "User-Agent: {$this->config['useragent']}";
          }
  
          // Set HTTP authentication if needed
          if (is_array($this->auth)) {
              $auth = self::encodeAuthHeader($this->auth['user'], $this->auth['password'], $this->auth['type']);
              $headers[] = "Authorization: {$auth}";
          }
  
          // Load cookies from cookie jar
          if (isset($this->cookiejar)) {
              $cookstr = $this->cookiejar->getMatchingCookies($this->uri,
                  true, Zend_Http_CookieJar::COOKIE_STRING_CONCAT);
  
              if ($cookstr) {
                  $headers[] = "Cookie: {$cookstr}";
              }
          }
  
          // Add all other user defined headers
          foreach ($this->headers as $header) {
              list($name, $value) = $header;
              if (is_array($value)) {
                  $value = implode(', ', $value);
              }
  
              $headers[] = "$name: $value";
          }
  
          return $headers;
      }
code: protected function _prepareHeaders()
      {
          $headers = array();
  
          // Set the host header
          if (! isset($this->headers['host'])) {
              $host = $this->uri->getHost();
  
              // If the port is not default, add it
              if (! (($this->uri->getScheme() == 'http' && $this->uri->getPort() == 80) ||
                    ($this->uri->getScheme() == 'https' && $this->uri->getPort() == 443))) {
                  $host .= ':' . $this->uri->getPort();
              }
  
              $headers[] = "Host: {$host}";
          }
  
          // Set the connection header
          if (! isset($this->headers['connection'])) {
              if (! $this->config['keepalive']) {
                  $headers[] = "Connection: close";
              }
          }
  
          // Set the Accept-encoding header if not set - depending on whether
          // zlib is available or not.
          if (! isset($this->headers['accept-encoding'])) {
              if (function_exists('gzinflate')) {
                  $headers[] = 'Accept-encoding: gzip, deflate';
              } else {
                  $headers[] = 'Accept-encoding: identity';
              }
          }
          
          // Set the Content-Type header
          if ($this->method == self::POST &&
             (! isset($this->headers[strtolower(self::CONTENT_TYPE)]) && isset($this->enctype))) {
  
              $headers[] = self::CONTENT_TYPE . ': ' . $this->enctype;
          }
          
          // Set the user agent header
          if (! isset($this->headers['user-agent']) && isset($this->config['useragent'])) {
              $headers[] = "User-Agent: {$this->config['useragent']}";
          }
  
          // Set HTTP authentication if needed
          if (is_array($this->auth)) {
              $auth = self::encodeAuthHeader($this->auth['user'], $this->auth['password'], $this->auth['type']);
              $headers[] = "Authorization: {$auth}";
          }
  
          // Load cookies from cookie jar
          if (isset($this->cookiejar)) {
              $cookstr = $this->cookiejar->getMatchingCookies($this->uri,
                  true, Zend_Http_CookieJar::COOKIE_STRING_CONCAT);
  
              if ($cookstr) {
                  $headers[] = "Cookie: {$cookstr}";
              }
          }
  
          // Add all other user defined headers
          foreach ($this->headers as $header) {
              list($name, $value) = $header;
              if (is_array($value)) {
                  $value = implode(', ', $value);
              }
  
              $headers[] = "$name: $value";
          }
  
          return $headers;
      }
code_tokens: protected function _prepareHeaders ( ) { $ headers = array ( ) ; // Set the host header if ( ! isset ( $ this -> headers [ 'host' ] ) ) { $ host = $ this -> uri -> getHost ( ) ; // If the port is not default, add it if ( ! ( ( $ this -> uri -> getScheme ( ) == 'http' && $ this -> uri -> getPort ( ) == 80 ) || ( $ this -> uri -> getScheme ( ) == 'https' && $ this -> uri -> getPort ( ) == 443 ) ) ) { $ host .= ':' . $ this -> uri -> getPort ( ) ; } $ headers [ ] = "Host: {$host}" ; } // Set the connection header if ( ! isset ( $ this -> headers [ 'connection' ] ) ) { if ( ! $ this -> config [ 'keepalive' ] ) { $ headers [ ] = "Connection: close" ; } } // Set the Accept-encoding header if not set - depending on whether // zlib is available or not. if ( ! isset ( $ this -> headers [ 'accept-encoding' ] ) ) { if ( function_exists ( 'gzinflate' ) ) { $ headers [ ] = 'Accept-encoding: gzip, deflate' ; } else { $ headers [ ] = 'Accept-encoding: identity' ; } } // Set the Content-Type header if ( $ this -> method == self :: POST && ( ! isset ( $ this -> headers [ strtolower ( self :: CONTENT_TYPE ) ] ) && isset ( $ this -> enctype ) ) ) { $ headers [ ] = self :: CONTENT_TYPE . ': ' . $ this -> enctype ; } // Set the user agent header if ( ! isset ( $ this -> headers [ 'user-agent' ] ) && isset ( $ this -> config [ 'useragent' ] ) ) { $ headers [ ] = "User-Agent: {$this->config['useragent']}" ; } // Set HTTP authentication if needed if ( is_array ( $ this -> auth ) ) { $ auth = self :: encodeAuthHeader ( $ this -> auth [ 'user' ] , $ this -> auth [ 'password' ] , $ this -> auth [ 'type' ] ) ; $ headers [ ] = "Authorization: {$auth}" ; } // Load cookies from cookie jar if ( isset ( $ this -> cookiejar ) ) { $ cookstr = $ this -> cookiejar -> getMatchingCookies ( $ this -> uri , true , Zend_Http_CookieJar :: COOKIE_STRING_CONCAT ) ; if ( $ cookstr ) { $ headers [ ] = "Cookie: {$cookstr}" ; } } // Add all other user defined headers foreach ( $ this -> headers as $ header ) { list ( $ name , $ value ) = $ header ; if ( is_array ( $ value ) ) { $ value = implode ( ', ' , $ value ) ; } $ headers [ ] = "$name: $value" ; } return $ headers ; }
docstring: Prepare the request headers
  
  @return array
docstring_tokens: Prepare the request headers