1 files changed, 87 insertions, 0 deletions
diff --git a/netwerk/sctp/datachannel/DataChannelProtocol.h b/netwerk/sctp/datachannel/DataChannelProtocol.h
new file mode 100644
index 0000000000..e5aeb6ab94
--- /dev/null
+++ b/netwerk/sctp/datachannel/DataChannelProtocol.h
@@ -0,0 +1,87 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef NETWERK_SCTP_DATACHANNEL_DATACHANNELPROTOCOL_H_
+#define NETWERK_SCTP_DATACHANNEL_DATACHANNELPROTOCOL_H_
+
+#if defined(__GNUC__)
+#  define SCTP_PACKED __attribute__((packed))
+#elif defined(_MSC_VER)
+#  pragma pack(push, 1)
+#  define SCTP_PACKED
+#else
+#  error "Unsupported compiler"
+#endif
+
+#define WEBRTC_DATACHANNEL_STREAMS_DEFAULT 256
+// Do not change this value!
+#define WEBRTC_DATACHANNEL_PORT_DEFAULT 5000
+// TODO: Bug 1381146, change once we resolve the nsCString limitation
+#define WEBRTC_DATACHANNEL_MAX_MESSAGE_SIZE_LOCAL 1073741823
+#define WEBRTC_DATACHANNEL_MAX_MESSAGE_SIZE_REMOTE_DEFAULT 65536
+// TODO: Bug 1382779, once resolved, can be increased to min(Uint8ArrayMaxSize,
+// UINT32_MAX)
+// TODO: Bug 1381146, once resolved, can be increased to whatever we support
+//       then (hopefully SIZE_MAX) or be removed
+#define WEBRTC_DATACHANNEL_MAX_MESSAGE_SIZE_REMOTE 2147483637
+
+#define DATA_CHANNEL_PPID_CONTROL 50
+#define DATA_CHANNEL_PPID_BINARY_PARTIAL 52
+#define DATA_CHANNEL_PPID_BINARY 53
+#define DATA_CHANNEL_PPID_DOMSTRING_PARTIAL 54
+#define DATA_CHANNEL_PPID_DOMSTRING 51
+
+#define DATA_CHANNEL_MAX_BINARY_FRAGMENT 0x4000
+
+#define DATA_CHANNEL_FLAGS_FINISH_OPEN 0x00000004
+#define DATA_CHANNEL_FLAGS_WAITING_ACK 0x00000010
+#define DATA_CHANNEL_FLAGS_CLOSING_TOO_LARGE 0x00000020
+
+#define DATA_CHANNEL_BUFFER_MESSAGE_FLAGS_TOO_LARGE 0x01
+#define DATA_CHANNEL_BUFFER_MESSAGE_FLAGS_BUFFERED 0x02
+#define DATA_CHANNEL_BUFFER_MESSAGE_FLAGS_COMPLETE 0x04
+
+#define INVALID_STREAM (0xFFFF)
+// max is 0xFFFF: Streams 0 to 0xFFFE = 0xFFFF streams
+#define MAX_NUM_STREAMS (2048)
+
+struct rtcweb_datachannel_open_request {
+  uint8_t msg_type;  // DATA_CHANNEL_OPEN
+  uint8_t channel_type;
+  int16_t priority;
+  uint32_t reliability_param;
+  uint16_t label_length;
+  uint16_t protocol_length;
+  char label[1];  // (and protocol) keep VC++ happy...
+} SCTP_PACKED;
+
+struct rtcweb_datachannel_ack {
+  uint8_t msg_type;  // DATA_CHANNEL_ACK
+} SCTP_PACKED;
+
+/* msg_type values: */
+/* 0-1 were used in an early version of the protocol with 3-way handshakes */
+#define DATA_CHANNEL_ACK 2
+#define DATA_CHANNEL_OPEN_REQUEST 3
+
+/* channel_type values: */
+#define DATA_CHANNEL_RELIABLE 0x00
+#define DATA_CHANNEL_PARTIAL_RELIABLE_REXMIT 0x01
+#define DATA_CHANNEL_PARTIAL_RELIABLE_TIMED 0x02
+
+#define DATA_CHANNEL_RELIABLE_UNORDERED 0x80
+#define DATA_CHANNEL_PARTIAL_RELIABLE_REXMIT_UNORDERED 0x81
+#define DATA_CHANNEL_PARTIAL_RELIABLE_TIMED_UNORDERED 0x82
+
+#define ERR_DATA_CHANNEL_ALREADY_OPEN 1
+#define ERR_DATA_CHANNEL_NONE_AVAILABLE 2
+
+#if defined(_MSC_VER)
+#  pragma pack(pop)
+#  undef SCTP_PACKED
+#endif
+
+#endif