diff options
Diffstat (limited to 'third_party/grpc/src/core/transport/chttp2/frame_rst_stream.c')
-rw-r--r-- | third_party/grpc/src/core/transport/chttp2/frame_rst_stream.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/third_party/grpc/src/core/transport/chttp2/frame_rst_stream.c b/third_party/grpc/src/core/transport/chttp2/frame_rst_stream.c new file mode 100644 index 0000000000..754529e4b9 --- /dev/null +++ b/third_party/grpc/src/core/transport/chttp2/frame_rst_stream.c @@ -0,0 +1,99 @@ +/* + * + * 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. + * + */ + +#include "src/core/transport/chttp2/frame_rst_stream.h" +#include "src/core/transport/chttp2/internal.h" + +#include <grpc/support/log.h> + +#include "src/core/transport/chttp2/frame.h" + +gpr_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code) { + gpr_slice slice = gpr_slice_malloc(13); + uint8_t *p = GPR_SLICE_START_PTR(slice); + + *p++ = 0; + *p++ = 0; + *p++ = 4; + *p++ = GRPC_CHTTP2_FRAME_RST_STREAM; + *p++ = 0; + *p++ = (uint8_t)(id >> 24); + *p++ = (uint8_t)(id >> 16); + *p++ = (uint8_t)(id >> 8); + *p++ = (uint8_t)(id); + *p++ = (uint8_t)(code >> 24); + *p++ = (uint8_t)(code >> 16); + *p++ = (uint8_t)(code >> 8); + *p++ = (uint8_t)(code); + + return slice; +} + +grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_begin_frame( + grpc_chttp2_rst_stream_parser *parser, uint32_t length, uint8_t flags) { + if (length != 4) { + gpr_log(GPR_ERROR, "invalid rst_stream: length=%d, flags=%02x", length, + flags); + return GRPC_CHTTP2_CONNECTION_ERROR; + } + parser->byte = 0; + return GRPC_CHTTP2_PARSE_OK; +} + +grpc_chttp2_parse_error grpc_chttp2_rst_stream_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) { + uint8_t *const beg = GPR_SLICE_START_PTR(slice); + uint8_t *const end = GPR_SLICE_END_PTR(slice); + uint8_t *cur = beg; + grpc_chttp2_rst_stream_parser *p = parser; + + while (p->byte != 4 && cur != end) { + p->reason_bytes[p->byte] = *cur; + cur++; + p->byte++; + } + + if (p->byte == 4) { + GPR_ASSERT(is_last); + stream_parsing->received_close = 1; + stream_parsing->saw_rst_stream = 1; + stream_parsing->rst_stream_reason = (((uint32_t)p->reason_bytes[0]) << 24) | + (((uint32_t)p->reason_bytes[1]) << 16) | + (((uint32_t)p->reason_bytes[2]) << 8) | + (((uint32_t)p->reason_bytes[3])); + } + + return GRPC_CHTTP2_PARSE_OK; +} |