Method update

plugins/esi/combo_handler.cc:252–304

}

void
CacheControlHeader::update(TSMBuffer bufp, TSMLoc hdr_loc)
{
  bool found_immutable = false;
  bool found_private   = false;

  // Load each value from the Cache-Control header into the vector values
  TSMLoc field_loc = TSMimeHdrFieldFind(bufp, hdr_loc, TS_MIME_FIELD_CACHE_CONTROL, TS_MIME_LEN_CACHE_CONTROL);
  if (field_loc != TS_NULL_MLOC) {
    int n_values = TSMimeHdrFieldValuesCount(bufp, hdr_loc, field_loc);
    if ((n_values != TS_ERROR) && (n_values > 0)) {
      for (int i = 0; i < n_values; i++) {
        // Grab this current header value
        int         _val_len = 0;
        const char *val      = TSMimeHdrFieldValueStringGet(bufp, hdr_loc, field_loc, i, &_val_len);

        // Update max-age if necessary
        if (strncasecmp(val, TS_HTTP_VALUE_MAX_AGE, TS_HTTP_LEN_MAX_AGE) == 0) {
          unsigned int max_age  = 0;
          char        *ptr      = const_cast<char *>(val);
          ptr                  += TS_HTTP_LEN_MAX_AGE;
          while ((*ptr == ' ') || (*ptr == '\t')) {
            ptr++;
          }
          if (*ptr == '=') {
            ptr++;
            max_age = atoi(ptr);
          }
          if (max_age > 0 && max_age < _max_age) {
            _max_age = max_age;
          }
          // If we find even a single occurrence of private, the whole response must be private
        } else if (strncasecmp(val, TS_HTTP_VALUE_PRIVATE, TS_HTTP_LEN_PRIVATE) == 0) {
          found_private = true;
          // Every requested document must have immutable for the final response to be immutable
        } else if (strncasecmp(val, HTTP_IMMUTABLE, strlen(HTTP_IMMUTABLE)) == 0) {
          found_immutable = true;
        }
      }
    }
    TSHandleMLocRelease(bufp, hdr_loc, field_loc);
  }

  if (!found_immutable) {
    LOG_DEBUG("Did not see an immutable cache control. The response will be not be immutable");
    _immutable = false;
  }

  if (found_private) {
    LOG_DEBUG("Saw a private cache control. The response will be private");
    _publicity = Publicity::PRIVATE;
  }
}

string
CacheControlHeader::generate() const