Function InjectCacheKeyHeader

plugins/xdebug/xdebug.cc:175–220

}

static void
InjectCacheKeyHeader(TSHttpTxn txn, TSMBuffer buffer, TSMLoc hdr)
{
  TSMLoc url = TS_NULL_MLOC;
  TSMLoc dst = TS_NULL_MLOC;

  struct {
    char *ptr;
    int   len;
  } strval = {nullptr, 0};

  Dbg(dbg_ctl, "attempting to inject X-Cache-Key header");

  if (TSUrlCreate(buffer, &url) != TS_SUCCESS) {
    goto done;
  }

  if (TSHttpTxnCacheLookupUrlGet(txn, buffer, url) != TS_SUCCESS) {
    goto done;
  }

  strval.ptr = TSUrlStringGet(buffer, url, &strval.len);
  if (strval.ptr == nullptr || strval.len == 0) {
    goto done;
  }

  // Create a new response header field.
  dst = FindOrMakeHdrField(buffer, hdr, "X-Cache-Key", lengthof("X-Cache-Key"));
  if (dst == TS_NULL_MLOC) {
    goto done;
  }

  // Now copy the cache lookup URL into the response header.
  TSReleaseAssert(TSMimeHdrFieldValueStringInsert(buffer, hdr, dst, -1 /* idx */, strval.ptr, strval.len) == TS_SUCCESS);

done:
  if (dst != TS_NULL_MLOC) {
    TSHandleMLocRelease(buffer, hdr, dst);
  }

  if (url != TS_NULL_MLOC) {
    TSHandleMLocRelease(buffer, TS_NULL_MLOC, url);
  }

  TSfree(strval.ptr);
}

static void
InjectCacheInfoHeader(TSHttpTxn txn, TSMBuffer buffer, TSMLoc hdr)