int amqp_send_frame(amqp_connection_state_t state,
const amqp_frame_t *frame)
{
void *out_frame = state->outbound_buffer.bytes;
int res;
amqp_e8(out_frame, 0, frame->frame_type);
amqp_e16(out_frame, 1, frame->channel);
if (frame->frame_type == AMQP_FRAME_BODY) {
/* For a body frame, rather than copying data around, we use
writev to compose the frame */
struct iovec iov[3];
uint8_t frame_end_byte = AMQP_FRAME_END;
const amqp_bytes_t *body = &frame->payload.body_fragment;
amqp_e32(out_frame, 3, body->len);
iov[0].iov_base = out_frame;
iov[0].iov_len = HEADER_SIZE;
iov[1].iov_base = body->bytes;
iov[1].iov_len = body->len;
iov[2].iov_base = &frame_end_byte;
iov[2].iov_len = FOOTER_SIZE;
res = amqp_socket_writev(state->socket, iov, 3);
} else {
size_t out_frame_len;
amqp_bytes_t encoded;
switch (frame->frame_type) {
case AMQP_FRAME_METHOD:
amqp_e32(out_frame, HEADER_SIZE, frame->payload.method.id);
encoded.bytes = amqp_offset(out_frame, HEADER_SIZE + 4);
encoded.len = state->outbound_buffer.len - HEADER_SIZE - 4 - FOOTER_SIZE;
res = amqp_encode_method(frame->payload.method.id,
frame->payload.method.decoded, encoded);
if (res < 0) {
return res;
}
out_frame_len = res + 4;
break;
case AMQP_FRAME_HEADER:
amqp_e16(out_frame, HEADER_SIZE, frame->payload.properties.class_id);
amqp_e16(out_frame, HEADER_SIZE+2, 0); /* "weight" */
amqp_e64(out_frame, HEADER_SIZE+4, frame->payload.properties.body_size);
encoded.bytes = amqp_offset(out_frame, HEADER_SIZE + 12);
encoded.len = state->outbound_buffer.len - HEADER_SIZE - 12 - FOOTER_SIZE;
res = amqp_encode_properties(frame->payload.properties.class_id,
frame->payload.properties.decoded, encoded);
if (res < 0) {
return res;
}
out_frame_len = res + 12;
break;
case AMQP_FRAME_HEARTBEAT:
out_frame_len = 0;
break;
default:
return AMQP_STATUS_INVALID_PARAMETER;
}
amqp_e32(out_frame, 3, out_frame_len);
amqp_e8(out_frame, out_frame_len + HEADER_SIZE, AMQP_FRAME_END);
res = amqp_socket_send(state->socket, out_frame,
out_frame_len + HEADER_SIZE + FOOTER_SIZE);
}
if (state->heartbeat > 0) {
uint64_t current_time = amqp_get_monotonic_timestamp();
if (0 == current_time) {
return AMQP_STATUS_TIMER_FAILURE;
}
state->next_send_heartbeat = amqp_calc_next_send_heartbeat(state, current_time);
}
return res;
}
int amqp_send_frame(amqp_connection_state_t state,
const amqp_frame_t *frame)
{
void *out_frame = state->outbound_buffer.bytes;
int res;
amqp_e8(out_frame, 0, frame->frame_type);
amqp_e16(out_frame, 1, frame->channel);
if (frame->frame_type == AMQP_FRAME_BODY) {
/* For a body frame, rather than copying data around, we use
writev to compose the frame */
struct iovec iov[3];
uint8_t frame_end_byte = AMQP_FRAME_END;
const amqp_bytes_t *body = &frame->payload.body_fragment;
amqp_e32(out_frame, 3, body->len);
iov[0].iov_base = out_frame;
iov[0].iov_len = HEADER_SIZE;
iov[1].iov_base = body->bytes;
iov[1].iov_len = body->len;
iov[2].iov_base = &frame_end_byte;
iov[2].iov_len = FOOTER_SIZE;
res = amqp_socket_writev(state->sockfd, iov, 3);
}
else {
size_t out_frame_len;
amqp_bytes_t encoded;
switch (frame->frame_type) {
case AMQP_FRAME_METHOD:
amqp_e32(out_frame, HEADER_SIZE, frame->payload.method.id);
encoded.bytes = amqp_offset(out_frame, HEADER_SIZE + 4);
encoded.len = state->outbound_buffer.len - HEADER_SIZE - 4 - FOOTER_SIZE;
res = amqp_encode_method(frame->payload.method.id,
frame->payload.method.decoded, encoded);
if (res < 0)
return res;
out_frame_len = res + 4;
break;
case AMQP_FRAME_HEADER:
amqp_e16(out_frame, HEADER_SIZE, frame->payload.properties.class_id);
amqp_e16(out_frame, HEADER_SIZE+2, 0); /* "weight" */
amqp_e64(out_frame, HEADER_SIZE+4, frame->payload.properties.body_size);
encoded.bytes = amqp_offset(out_frame, HEADER_SIZE + 12);
encoded.len = state->outbound_buffer.len - HEADER_SIZE - 12 - FOOTER_SIZE;
res = amqp_encode_properties(frame->payload.properties.class_id,
frame->payload.properties.decoded, encoded);
if (res < 0)
return res;
out_frame_len = res + 12;
break;
case AMQP_FRAME_HEARTBEAT:
out_frame_len = 0;
break;
default:
abort();
}
amqp_e32(out_frame, 3, out_frame_len);
amqp_e8(out_frame, out_frame_len + HEADER_SIZE, AMQP_FRAME_END);
res = send(state->sockfd, out_frame,
out_frame_len + HEADER_SIZE + FOOTER_SIZE, 0);
}
if (res < 0)
return -amqp_socket_error();
else
return 0;
}
static int inner_send_frame(amqp_connection_state_t state,
amqp_frame_t const *frame,
amqp_bytes_t *encoded,
int *payload_len)
{
int separate_body;
E_8(state->outbound_buffer, 0, frame->frame_type);
E_16(state->outbound_buffer, 1, frame->channel);
switch (frame->frame_type) {
case AMQP_FRAME_METHOD:
E_32(state->outbound_buffer, HEADER_SIZE, frame->payload.method.id);
encoded->len = state->outbound_buffer.len - (HEADER_SIZE + 4 + FOOTER_SIZE);
encoded->bytes = D_BYTES(state->outbound_buffer, HEADER_SIZE + 4, encoded->len);
*payload_len = AMQP_CHECK_RESULT(amqp_encode_method(frame->payload.method.id,
frame->payload.method.decoded,
*encoded)) + 4;
separate_body = 0;
break;
case AMQP_FRAME_HEADER:
E_16(state->outbound_buffer, HEADER_SIZE, frame->payload.properties.class_id);
E_16(state->outbound_buffer, HEADER_SIZE+2, 0); /* "weight" */
E_64(state->outbound_buffer, HEADER_SIZE+4, frame->payload.properties.body_size);
encoded->len = state->outbound_buffer.len - (HEADER_SIZE + 12 + FOOTER_SIZE);
encoded->bytes = D_BYTES(state->outbound_buffer, HEADER_SIZE + 12, encoded->len);
*payload_len = AMQP_CHECK_RESULT(amqp_encode_properties(frame->payload.properties.class_id,
frame->payload.properties.decoded,
*encoded)) + 12;
separate_body = 0;
break;
case AMQP_FRAME_BODY:
*encoded = frame->payload.body_fragment;
*payload_len = encoded->len;
separate_body = 1;
break;
case AMQP_FRAME_HEARTBEAT:
*encoded = AMQP_EMPTY_BYTES;
*payload_len = 0;
separate_body = 0;
break;
default:
return -EINVAL;
}
E_32(state->outbound_buffer, 3, *payload_len);
if (!separate_body) {
E_8(state->outbound_buffer, *payload_len + HEADER_SIZE, AMQP_FRAME_END);
}
#if 0
if (separate_body) {
printf("sending body frame (header):\n");
amqp_dump(state->outbound_buffer.bytes, HEADER_SIZE);
printf("sending body frame (payload):\n");
amqp_dump(encoded->bytes, *payload_len);
} else {
printf("sending:\n");
amqp_dump(state->outbound_buffer.bytes, *payload_len + HEADER_SIZE + FOOTER_SIZE);
}
#endif
return separate_body;
}
static int amqp_frame_to_bytes(const amqp_frame_t *frame, amqp_bytes_t buffer,
amqp_bytes_t *encoded) {
void *out_frame = buffer.bytes;
size_t out_frame_len;
int res;
amqp_e8(out_frame, 0, frame->frame_type);
amqp_e16(out_frame, 1, frame->channel);
switch (frame->frame_type) {
case AMQP_FRAME_BODY: {
const amqp_bytes_t *body = &frame->payload.body_fragment;
memcpy(amqp_offset(out_frame, HEADER_SIZE), body->bytes, body->len);
out_frame_len = body->len;
break;
}
case AMQP_FRAME_METHOD: {
amqp_bytes_t method_encoded;
amqp_e32(out_frame, HEADER_SIZE, frame->payload.method.id);
method_encoded.bytes = amqp_offset(out_frame, HEADER_SIZE + 4);
method_encoded.len = buffer.len - HEADER_SIZE - 4 - FOOTER_SIZE;
res = amqp_encode_method(frame->payload.method.id,
frame->payload.method.decoded, method_encoded);
if (res < 0) {
return res;
}
out_frame_len = res + 4;
break;
}
case AMQP_FRAME_HEADER:
amqp_e16(out_frame, HEADER_SIZE, frame->payload.properties.class_id);
amqp_e16(out_frame, HEADER_SIZE + 2, 0); /* "weight" */
amqp_e64(out_frame, HEADER_SIZE + 4, frame->payload.properties.body_size);
encoded->bytes = amqp_offset(out_frame, HEADER_SIZE + 12);
encoded->len = buffer.len - HEADER_SIZE - 12 - FOOTER_SIZE;
res = amqp_encode_properties(frame->payload.properties.class_id,
frame->payload.properties.decoded, *encoded);
if (res < 0) {
return res;
}
out_frame_len = res + 12;
break;
case AMQP_FRAME_HEARTBEAT:
out_frame_len = 0;
break;
default:
return AMQP_STATUS_INVALID_PARAMETER;
}
amqp_e32(out_frame, 3, (uint32_t)out_frame_len);
amqp_e8(out_frame, HEADER_SIZE + out_frame_len, AMQP_FRAME_END);
encoded->bytes = out_frame;
encoded->len = out_frame_len + HEADER_SIZE + FOOTER_SIZE;
return AMQP_STATUS_OK;
}