Initial checkin of gRPC to third_party/

third_party/grpc/src/core/transport/chttp2/frame_settings.h

Index: third_party/grpc/src/core/transport/chttp2/frame_settings.h
diff --git a/third_party/grpc/src/core/transport/chttp2/frame_settings.h b/third_party/grpc/src/core/transport/chttp2/frame_settings.h
new file mode 100644
index 0000000000000000000000000000000000000000..3c918e3a2a90985489e2ad2910c7ff684455dcf6
--- /dev/null
+++ b/third_party/grpc/src/core/transport/chttp2/frame_settings.h
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H
+#define GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H
+
+#include <grpc/support/port_platform.h>
+#include <grpc/support/slice.h>
+#include "src/core/transport/chttp2/frame.h"
+#include "src/core/iomgr/exec_ctx.h"
+
+typedef enum {
+  GRPC_CHTTP2_SPS_ID0,
+  GRPC_CHTTP2_SPS_ID1,
+  GRPC_CHTTP2_SPS_VAL0,
+  GRPC_CHTTP2_SPS_VAL1,
+  GRPC_CHTTP2_SPS_VAL2,
+  GRPC_CHTTP2_SPS_VAL3
+} grpc_chttp2_settings_parse_state;
+
+/* The things HTTP/2 defines as connection level settings */
+typedef enum {
+  GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE = 1,
+  GRPC_CHTTP2_SETTINGS_ENABLE_PUSH = 2,
+  GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS = 3,
+  GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE = 4,
+  GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE = 5,
+  GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE = 6,
+  GRPC_CHTTP2_NUM_SETTINGS
+} grpc_chttp2_setting_id;
+
+typedef struct {
+  grpc_chttp2_settings_parse_state state;
+  uint32_t *target_settings;
+  uint8_t is_ack;
+  uint16_t id;
+  uint32_t value;
+  uint32_t incoming_settings[GRPC_CHTTP2_NUM_SETTINGS];
+} grpc_chttp2_settings_parser;
+
+typedef enum {
+  GRPC_CHTTP2_CLAMP_INVALID_VALUE,
+  GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE
+} grpc_chttp2_invalid_value_behavior;
+
+typedef struct {
+  const char *name;
+  uint32_t default_value;
+  uint32_t min_value;
+  uint32_t max_value;
+  grpc_chttp2_invalid_value_behavior invalid_value_behavior;
+  uint32_t error_value;
+} grpc_chttp2_setting_parameters;
+
+/* HTTP/2 mandated connection setting parameters */
+extern const grpc_chttp2_setting_parameters
+    grpc_chttp2_settings_parameters[GRPC_CHTTP2_NUM_SETTINGS];
+
+/* Create a settings frame by diffing old & new, and updating old to be new */
+gpr_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
+                                      uint32_t force_mask, size_t count);
+/* Create an ack settings frame */
+gpr_slice grpc_chttp2_settings_ack_create(void);
+
+grpc_chttp2_parse_error grpc_chttp2_settings_parser_begin_frame(
+    grpc_chttp2_settings_parser *parser, uint32_t length, uint8_t flags,
+    uint32_t *settings);
+grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse(
+    grpc_exec_ctx *exec_ctx, void *parser,
+    grpc_chttp2_transport_parsing *transport_parsing,
+    grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last);
+
+#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H */