diff options
author | 2017-04-10 18:14:49 -0700 | |
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committer | 2017-04-10 18:14:49 -0700 | |
commit | e899e32710ba6742d986a3c7725a2358d1081f83 (patch) | |
tree | 43f884feb2e86f0b856706b4ba3448b6906997ad /src/core/ext/transport/chttp2/transport/frame_data.c | |
parent | c702a7a85f9756e94c04e011c11d47a96733ac95 (diff) |
Move deframe_unprocessed_incoming_frames to frame_data.c
Diffstat (limited to 'src/core/ext/transport/chttp2/transport/frame_data.c')
-rw-r--r-- | src/core/ext/transport/chttp2/transport/frame_data.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/core/ext/transport/chttp2/transport/frame_data.c b/src/core/ext/transport/chttp2/transport/frame_data.c index af754e1a77..4aa61ae68e 100644 --- a/src/core/ext/transport/chttp2/transport/frame_data.c +++ b/src/core/ext/transport/chttp2/transport/frame_data.c @@ -112,6 +112,184 @@ void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer *inbuf, stats->data_bytes += write_bytes; } +grpc_error *deframe_unprocessed_incoming_frames(grpc_exec_ctx *exec_ctx, + grpc_chttp2_data_parser *p, + grpc_chttp2_stream *s, + grpc_slice_buffer *slices, + grpc_slice *slice_out, + grpc_byte_stream **stream_out) { + grpc_error *error = GRPC_ERROR_NONE; + grpc_chttp2_transport *t = s->t; + + while (slices->count > 0) { + uint8_t *beg = NULL; + uint8_t *end = NULL; + uint8_t *cur = NULL; + + grpc_slice slice = grpc_slice_buffer_take_first(slices); + + beg = GRPC_SLICE_START_PTR(slice); + end = GRPC_SLICE_END_PTR(slice); + cur = beg; + uint32_t message_flags; + char *msg; + + if (cur == end) { + grpc_slice_unref_internal(exec_ctx, slice); + continue; + } + + switch (p->state) { + case GRPC_CHTTP2_DATA_ERROR: + p->state = GRPC_CHTTP2_DATA_ERROR; + grpc_slice_unref_internal(exec_ctx, slice); + return GRPC_ERROR_REF(p->error); + case GRPC_CHTTP2_DATA_FH_0: + p->frame_type = *cur; + switch (p->frame_type) { + case 0: + p->is_frame_compressed = 0; /* GPR_FALSE */ + break; + case 1: + p->is_frame_compressed = 1; /* GPR_TRUE */ + break; + default: + gpr_asprintf(&msg, "Bad GRPC frame type 0x%02x", p->frame_type); + p->error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg); + p->error = grpc_error_set_int(p->error, GRPC_ERROR_INT_STREAM_ID, + (intptr_t)s->id); + gpr_free(msg); + msg = grpc_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII); + p->error = grpc_error_set_str(p->error, GRPC_ERROR_STR_RAW_BYTES, + grpc_slice_from_copied_string(msg)); + gpr_free(msg); + p->error = + grpc_error_set_int(p->error, GRPC_ERROR_INT_OFFSET, cur - beg); + p->state = GRPC_CHTTP2_DATA_ERROR; + grpc_slice_unref_internal(exec_ctx, slice); + return GRPC_ERROR_REF(p->error); + } + if (++cur == end) { + p->state = GRPC_CHTTP2_DATA_FH_1; + grpc_slice_unref_internal(exec_ctx, slice); + continue; + } + /* fallthrough */ + case GRPC_CHTTP2_DATA_FH_1: + p->frame_size = ((uint32_t)*cur) << 24; + if (++cur == end) { + p->state = GRPC_CHTTP2_DATA_FH_2; + grpc_slice_unref_internal(exec_ctx, slice); + continue; + } + /* fallthrough */ + case GRPC_CHTTP2_DATA_FH_2: + p->frame_size |= ((uint32_t)*cur) << 16; + if (++cur == end) { + p->state = GRPC_CHTTP2_DATA_FH_3; + grpc_slice_unref_internal(exec_ctx, slice); + continue; + } + /* fallthrough */ + case GRPC_CHTTP2_DATA_FH_3: + p->frame_size |= ((uint32_t)*cur) << 8; + if (++cur == end) { + p->state = GRPC_CHTTP2_DATA_FH_4; + grpc_slice_unref_internal(exec_ctx, slice); + continue; + } + /* fallthrough */ + case GRPC_CHTTP2_DATA_FH_4: + GPR_ASSERT(stream_out != NULL); + GPR_ASSERT(p->parsing_frame == NULL); + p->frame_size |= ((uint32_t)*cur); + p->state = GRPC_CHTTP2_DATA_FRAME; + ++cur; + message_flags = 0; + if (p->is_frame_compressed) { + message_flags |= GRPC_WRITE_INTERNAL_COMPRESS; + } + p->parsing_frame = grpc_chttp2_incoming_byte_stream_create( + exec_ctx, t, s, p->frame_size, message_flags); + *stream_out = &p->parsing_frame->base; + if (p->parsing_frame->remaining_bytes == 0) { + grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame, + GRPC_ERROR_NONE, 1); + p->parsing_frame = NULL; + p->state = GRPC_CHTTP2_DATA_FH_0; + } + s->pending_byte_stream = true; + + if (cur != end) { + grpc_slice_buffer_undo_take_first( + &s->unprocessed_incoming_frames_buffer, + grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg))); + } + grpc_slice_unref_internal(exec_ctx, slice); + return GRPC_ERROR_NONE; + case GRPC_CHTTP2_DATA_FRAME: { + GPR_ASSERT(p->parsing_frame != NULL); + GPR_ASSERT(slice_out != NULL); + if (cur == end) { + grpc_slice_unref_internal(exec_ctx, slice); + continue; + } + uint32_t remaining = (uint32_t)(end - cur); + if (remaining == p->frame_size) { + if (GRPC_ERROR_NONE != (error = grpc_chttp2_incoming_byte_stream_push( + exec_ctx, p->parsing_frame, + grpc_slice_sub(slice, (size_t)(cur - beg), + (size_t)(end - beg)), + slice_out))) { + grpc_slice_unref_internal(exec_ctx, slice); + return error; + } + grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame, + GRPC_ERROR_NONE, 1); + p->parsing_frame = NULL; + p->state = GRPC_CHTTP2_DATA_FH_0; + grpc_slice_unref_internal(exec_ctx, slice); + return GRPC_ERROR_NONE; + } else if (remaining < p->frame_size) { + if (GRPC_ERROR_NONE != (error = grpc_chttp2_incoming_byte_stream_push( + exec_ctx, p->parsing_frame, + grpc_slice_sub(slice, (size_t)(cur - beg), + (size_t)(end - beg)), + slice_out))) { + return error; + } + p->frame_size -= remaining; + grpc_slice_unref_internal(exec_ctx, slice); + return GRPC_ERROR_NONE; + } else { + GPR_ASSERT(remaining > p->frame_size); + if (GRPC_ERROR_NONE != + (grpc_chttp2_incoming_byte_stream_push( + exec_ctx, p->parsing_frame, + grpc_slice_sub(slice, (size_t)(cur - beg), + (size_t)(cur + p->frame_size - beg)), + slice_out))) { + grpc_slice_unref_internal(exec_ctx, slice); + return error; + } + grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame, + GRPC_ERROR_NONE, 1); + p->parsing_frame = NULL; + p->state = GRPC_CHTTP2_DATA_FH_0; + cur += p->frame_size; + grpc_slice_buffer_undo_take_first( + &s->unprocessed_incoming_frames_buffer, + grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg))); + grpc_slice_unref_internal(exec_ctx, slice); + return GRPC_ERROR_NONE; + } + } + } + } + + return GRPC_ERROR_NONE; +} + grpc_error *grpc_chttp2_data_parser_parse(grpc_exec_ctx *exec_ctx, void *parser, grpc_chttp2_transport *t, grpc_chttp2_stream *s, |