Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc-cloned / deps / grpc / src / core / ext / transport / chttp2 / transport / frame_rst_stream.cc

diff --git a/legacy-libs/grpc-cloned/deps/grpc/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc b/legacy-libs/grpc-cloned/deps/grpc/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc
new file mode 100644 (file)
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--- /dev/null
+++ b/legacy-libs/grpc-cloned/deps/grpc/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc
@@ -0,0 +1,122 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame_rst_stream.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+grpc_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code,
+                                         grpc_transport_one_way_stats* stats) {
+  static const size_t frame_size = 13;
+  grpc_slice slice = GRPC_SLICE_MALLOC(frame_size);
+  if (stats != nullptr) stats->framing_bytes += frame_size;
+  uint8_t* p = GRPC_SLICE_START_PTR(slice);
+
+  // Frame size.
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 4;
+  // Frame type.
+  *p++ = GRPC_CHTTP2_FRAME_RST_STREAM;
+  // Flags.
+  *p++ = 0;
+  // Stream ID.
+  *p++ = static_cast<uint8_t>(id >> 24);
+  *p++ = static_cast<uint8_t>(id >> 16);
+  *p++ = static_cast<uint8_t>(id >> 8);
+  *p++ = static_cast<uint8_t>(id);
+  // Error code.
+  *p++ = static_cast<uint8_t>(code >> 24);
+  *p++ = static_cast<uint8_t>(code >> 16);
+  *p++ = static_cast<uint8_t>(code >> 8);
+  *p++ = static_cast<uint8_t>(code);
+
+  return slice;
+}
+
+void grpc_chttp2_add_rst_stream_to_next_write(
+    grpc_chttp2_transport* t, uint32_t id, uint32_t code,
+    grpc_transport_one_way_stats* stats) {
+  t->num_pending_induced_frames++;
+  grpc_slice_buffer_add(&t->qbuf,
+                        grpc_chttp2_rst_stream_create(id, code, stats));
+}
+
+grpc_error* grpc_chttp2_rst_stream_parser_begin_frame(
+    grpc_chttp2_rst_stream_parser* parser, uint32_t length, uint8_t flags) {
+  if (length != 4) {
+    char* msg;
+    gpr_asprintf(&msg, "invalid rst_stream: length=%d, flags=%02x", length,
+                 flags);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+  parser->byte = 0;
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_chttp2_rst_stream_parser_parse(void* parser,
+                                                grpc_chttp2_transport* t,
+                                                grpc_chttp2_stream* s,
+                                                const grpc_slice& slice,
+                                                int is_last) {
+  const uint8_t* const beg = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* const end = GRPC_SLICE_END_PTR(slice);
+  const uint8_t* cur = beg;
+  grpc_chttp2_rst_stream_parser* p =
+      static_cast<grpc_chttp2_rst_stream_parser*>(parser);
+
+  while (p->byte != 4 && cur != end) {
+    p->reason_bytes[p->byte] = *cur;
+    cur++;
+    p->byte++;
+  }
+  s->stats.incoming.framing_bytes += static_cast<uint64_t>(end - cur);
+
+  if (p->byte == 4) {
+    GPR_ASSERT(is_last);
+    uint32_t reason = ((static_cast<uint32_t>(p->reason_bytes[0])) << 24) |
+                      ((static_cast<uint32_t>(p->reason_bytes[1])) << 16) |
+                      ((static_cast<uint32_t>(p->reason_bytes[2])) << 8) |
+                      ((static_cast<uint32_t>(p->reason_bytes[3])));
+    grpc_error* error = GRPC_ERROR_NONE;
+    if (reason != GRPC_HTTP2_NO_ERROR || s->metadata_buffer[1].size == 0) {
+      char* message;
+      gpr_asprintf(&message, "Received RST_STREAM with error code %d", reason);
+      error = grpc_error_set_int(
+          grpc_error_set_str(GRPC_ERROR_CREATE_FROM_STATIC_STRING("RST_STREAM"),
+                             GRPC_ERROR_STR_GRPC_MESSAGE,
+                             grpc_slice_from_moved_string(
+                                 grpc_core::UniquePtr<char>(message))),
+          GRPC_ERROR_INT_HTTP2_ERROR, static_cast<intptr_t>(reason));
+    }
+    grpc_chttp2_mark_stream_closed(t, s, true, true, error);
+  }
+
+  return GRPC_ERROR_NONE;
+}