HTTP client should protect commas when folding (compatibility with legacy HTTP/1.0)

Bumping. So the RFC is not fully implemented?

What I've done in httprl

  // Parse the response headers.
  $cookie_primary_key = 0;
  while ($line = trim(array_shift($response))) {
    list($name, $value) = explode(':', $line, 2);
    $name = strtolower($name);

    // Parse cookies before they get added to the header.
    if ($name == 'set-cookie') {
      $cookie_values = explode(';', $value);
      $first = TRUE;
      foreach ($cookie_values as $c_name_value) {
        $c_name_value = explode('=', trim($c_name_value));
        if ($first) {
          $primary_key = trim($c_name_value[0]);
          $result->cookies[$cookie_primary_key]['name'] = trim($c_name_value[0]);
          $result->cookies[$cookie_primary_key]['value'] = trim($c_name_value[1]);
          $first = FALSE;
        }
        else {
          $result->cookies[$cookie_primary_key][trim($c_name_value[0])] = trim($c_name_value[1]);
        }
      }
      $cookie_primary_key++;
    }

    // Add key value pairs to the header; including cookies.
    if (isset($result->headers[$name]) && $name == 'set-cookie') {
      // RFC 2109: the Set-Cookie response header comprises the token Set-
      // Cookie:, followed by a comma-separated list of one or more cookies.
      $result->headers[$name] .= ',' . trim($value);
    }
    else {
      $result->headers[$name] = trim($value);
    }
  }

I've come up with some cleaner code and added in a lot more comments.

  // Parse the response headers.
  $cookie_primary_counter = 0;
  while ($line = trim(array_shift($response))) {
    list($name, $value) = explode(':', $line, 2);
    $name = strtolower($name);

    // Parse cookies before they get added to the header.
    if ($name == 'set-cookie') {
      // Extract the key value pairs for this cookie.
      foreach (explode(';', $value) as $cookie_name_value) {
        list($cookie_key, $cookie_value) = explode('=', trim($cookie_name_value));
        // The cookie name-value pair always comes first (RFC 2109 4.2.2).
        if (!isset($result->cookies[$cookie_primary_counter])) {
          $result->cookies[$cookie_primary_counter] = array(
            'name' => trim($cookie_key),
            'value' => trim($cookie_value),
          );
        }
        // Extract the rest of the attribute-value pairs.
        else {
          $result->cookies[$cookie_primary_counter] += array(
            trim($cookie_key) => trim($cookie_value),
          );
        }
      }
      $cookie_primary_counter++;
    }

    // Add key value pairs to the header; including cookies.
    if (isset($result->headers[$name]) && $name == 'set-cookie') {
      // RFC 2109: the Set-Cookie response header comprises the token Set-
      // Cookie:, followed by a comma-separated list of one or more cookies.
      $result->headers[$name] .= ',' . trim($value);
    }
    else {
      $result->headers[$name] = trim($value);
    }
  }

D8 has guzzle. Moving this to D7.