Project import generated by Copybara.
PiperOrigin-RevId: 224614037
Change-Id: I14e53449d4aeccb328f86828c76b5f09dea0d4b8
diff --git a/http2/tools/random_util.cc b/http2/tools/random_util.cc
new file mode 100644
index 0000000..82c3edd
--- /dev/null
+++ b/http2/tools/random_util.cc
@@ -0,0 +1,39 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/third_party/quiche/src/http2/tools/random_util.h"
+
+#include <cmath>
+
+namespace http2 {
+namespace test {
+
+// Here "word" means something that starts with a lower-case letter, and has
+// zero or more additional characters that are numbers or lower-case letters.
+Http2String GenerateHttp2HeaderName(size_t len, Http2Random* rng) {
+ Http2StringPiece alpha_lc = "abcdefghijklmnopqrstuvwxyz";
+ // If the name is short, just make it one word.
+ if (len < 8) {
+ return rng->RandStringWithAlphabet(len, alpha_lc);
+ }
+ // If the name is longer, ensure it starts with a word, and after that may
+ // have any character in alphanumdash_lc. 4 is arbitrary, could be as low
+ // as 1.
+ Http2StringPiece alphanumdash_lc = "abcdefghijklmnopqrstuvwxyz0123456789-";
+ return rng->RandStringWithAlphabet(4, alpha_lc) +
+ rng->RandStringWithAlphabet(len - 4, alphanumdash_lc);
+}
+
+Http2String GenerateWebSafeString(size_t len, Http2Random* rng) {
+ static const char* kWebsafe64 =
+ "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_";
+ return rng->RandStringWithAlphabet(len, kWebsafe64);
+}
+
+Http2String GenerateWebSafeString(size_t lo, size_t hi, Http2Random* rng) {
+ return GenerateWebSafeString(rng->UniformInRange(lo, hi), rng);
+}
+
+} // namespace test
+} // namespace http2
