Project import generated by Copybara.
PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/core/quic_connection_id.cc b/quic/core/quic_connection_id.cc
new file mode 100644
index 0000000..25c5b1f
--- /dev/null
+++ b/quic/core/quic_connection_id.cc
@@ -0,0 +1,106 @@
+// Copyright 2018 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/quic/core/quic_connection_id.h"
+
+#include <cstdint>
+#include <cstring>
+#include <iomanip>
+
+#include "net/third_party/quiche/src/quic/core/quic_types.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_endian.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_flag_utils.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_flags.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_logging.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_string.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_text_utils.h"
+
+namespace quic {
+
+QuicConnectionId::QuicConnectionId() : length_(0) {}
+
+QuicConnectionId::QuicConnectionId(const char* data, uint8_t length) {
+ if (length > kQuicMaxConnectionIdLength) {
+ QUIC_BUG << "Attempted to create connection ID of length " << length;
+ length = kQuicMaxConnectionIdLength;
+ }
+ length_ = length;
+ if (length_ > 0) {
+ memcpy(data_, data, length_);
+ }
+}
+
+QuicConnectionId::~QuicConnectionId() {}
+
+const char* QuicConnectionId::data() const {
+ return data_;
+}
+
+char* QuicConnectionId::mutable_data() {
+ return data_;
+}
+
+uint8_t QuicConnectionId::length() const {
+ return length_;
+}
+
+void QuicConnectionId::set_length(uint8_t length) {
+ length_ = length;
+}
+
+bool QuicConnectionId::IsEmpty() const {
+ return length_ == 0;
+}
+
+size_t QuicConnectionId::Hash() const {
+ uint64_t data_bytes[3] = {0, 0, 0};
+ static_assert(sizeof(data_bytes) >= sizeof(data_), "sizeof(data_) changed");
+ memcpy(data_bytes, data_, length_);
+ // This Hash function is designed to return the same value as the host byte
+ // order representation when the connection ID length is 64 bits.
+ return QuicEndian::NetToHost64(kQuicDefaultConnectionIdLength ^ length_ ^
+ data_bytes[0] ^ data_bytes[1] ^ data_bytes[2]);
+}
+
+QuicString QuicConnectionId::ToString() const {
+ if (IsEmpty()) {
+ return QuicString("0");
+ }
+ return QuicTextUtils::HexEncode(data_, length_);
+}
+
+std::ostream& operator<<(std::ostream& os, const QuicConnectionId& v) {
+ os << v.ToString();
+ return os;
+}
+
+bool QuicConnectionId::operator==(const QuicConnectionId& v) const {
+ return length_ == v.length_ && memcmp(data_, v.data_, length_) == 0;
+}
+
+bool QuicConnectionId::operator!=(const QuicConnectionId& v) const {
+ return !(v == *this);
+}
+
+bool QuicConnectionId::operator<(const QuicConnectionId& v) const {
+ if (length_ < v.length_) {
+ return true;
+ }
+ if (length_ > v.length_) {
+ return false;
+ }
+ return memcmp(data_, v.data_, length_) < 0;
+}
+
+QuicConnectionId EmptyQuicConnectionId() {
+ return QuicConnectionId();
+}
+
+static_assert(kQuicDefaultConnectionIdLength == sizeof(uint64_t),
+ "kQuicDefaultConnectionIdLength changed");
+static_assert(kQuicDefaultConnectionIdLength == PACKET_8BYTE_CONNECTION_ID,
+ "kQuicDefaultConnectionIdLength changed");
+
+} // namespace quic
