static int begin_message(grpc_call *call, grpc_begin_message msg) {
/* can't begin a message when we're still reading a message */
if (call->reading_message) {
char *message = NULL;
gpr_asprintf(
&message, "Message terminated early; read %d bytes, expected %d",
(int)call->incoming_message.length, (int)call->incoming_message_length);
cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message, 1);
gpr_free(message);
return 0;
}
/* stash away parameters, and prepare for incoming slices */
if (msg.length > grpc_channel_get_max_message_length(call->channel)) {
char *message = NULL;
gpr_asprintf(
&message,
"Maximum message length of %d exceeded by a message of length %d",
grpc_channel_get_max_message_length(call->channel), msg.length);
cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message, 1);
gpr_free(message);
return 0;
} else if (msg.length > 0) {
call->reading_message = 1;
call->incoming_message_length = msg.length;
return 1;
} else {
finish_message(call);
return 1;
}
}
static int add_slice_to_message(grpc_call *call, gpr_slice slice) {
if (GPR_SLICE_LENGTH(slice) == 0) {
gpr_slice_unref(slice);
return 1;
}
/* we have to be reading a message to know what to do here */
if (!call->reading_message) {
cancel_with_status(
call, GRPC_STATUS_INVALID_ARGUMENT,
"Received payload data while not reading a message", 1);
return 0;
}
/* append the slice to the incoming buffer */
gpr_slice_buffer_add(&call->incoming_message, slice);
if (call->incoming_message.length > call->incoming_message_length) {
/* if we got too many bytes, complain */
char *message = NULL;
gpr_asprintf(
&message, "Receiving message overflow; read %d bytes, expected %d",
(int)call->incoming_message.length, (int)call->incoming_message_length);
cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message, 1);
gpr_free(message);
return 0;
} else if (call->incoming_message.length == call->incoming_message_length) {
finish_message(call);
return 1;
} else {
return 1;
}
}
void SensorsMessageProcessor::list_sensors() {
// We don't support sensors yet so we mark all as disabled
int mask = 0;
char buf[12];
snprintf(buf, sizeof(buf), "%d", mask);
send_header(strlen(buf));
messenger_->send(buf, strlen(buf));
finish_message();
}
static int on_message_complete(http_parser* parser) {
print_debug("message complete\n");
return finish_message((evweb_http_processer*)parser);
}
