void Server::add_stream(const string &stream_id)
{
- // TODO
+ MutexLock lock(&mutex);
+ streams.insert(make_pair(stream_id, Stream()));
}
void Server::set_header(const string &stream_id, const string &header)
{
- // TODO
- printf("got header! %lu bytes\n", header.size());
+ MutexLock lock(&mutex);
+ assert(streams.count(stream_id) != 0);
+ streams[stream_id].header = header;
}
void Server::add_data(const string &stream_id, const char *data, size_t bytes)
return;
}
- client->state = Client::SENDING_HEADER;
+ parse_request(client);
+ break;
+ }
+ case Client::SENDING_HEADER: {
+ int ret = write(client->sock,
+ client->header.data() + client->header_bytes_sent,
+ client->header.size() - client->header_bytes_sent);
+ if (ret == -1) {
+ perror("write");
+ close_client(client);
+ return;
+ }
+
+ client->header_bytes_sent += ret;
+ assert(client->header_bytes_sent <= client->header.size());
+
+ if (client->header_bytes_sent < client->header.size()) {
+ // We haven't sent all yet. Fine; we'll do that later.
+ return;
+ }
- epoll_event ev;
- ev.events = EPOLLOUT | EPOLLRDHUP;
- ev.data.fd = client->sock;
+ // We're done sending the header! Clear the entire header to release some memory.
+ client->header.clear();
- if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, client->sock, &ev) == -1) {
- perror("epoll_ctl(EPOLL_CTL_MOD)");
- exit(1);
+ // Start sending from the end. In other words, we won't send any of the backlog,
+ // but we'll start sending immediately as we get data.
+ client->state = Client::SENDING_DATA;
+ client->bytes_sent = streams[client->stream_id].data_size;
+ break;
+ }
+ case Client::SENDING_DATA: {
+ // See if there's some data we've lost. Ideally, we should drop to a block boundary,
+ // but resync will be the mux's problem.
+ const Stream &stream = streams[client->stream_id];
+ size_t bytes_to_send = stream.data_size - client->bytes_sent;
+ if (bytes_to_send > BACKLOG_SIZE) {
+ fprintf(stderr, "WARNING: fd %d lost %lld bytes, maybe too slow connection\n",
+ client->sock,
+ (long long int)(bytes_to_send - BACKLOG_SIZE));
+ client->bytes_sent = streams[client->stream_id].data_size - BACKLOG_SIZE;
+ bytes_to_send = BACKLOG_SIZE;
}
+
+ // See if we need to split across the circular buffer.
+ int ret;
+ if ((client->bytes_sent % BACKLOG_SIZE) + bytes_to_send > BACKLOG_SIZE) {
+ // TODO: writev
+ assert(false);
+ } else {
+ ret = write(client->sock,
+ stream.data + (client->bytes_sent % BACKLOG_SIZE),
+ bytes_to_send);
+ }
+ if (ret == -1) {
+ perror("write/writev");
+ close_client(client);
+ return;
+ }
+ client->bytes_sent += ret;
break;
}
default:
assert(false);
}
}
+
+void Server::parse_request(Client *client)
+{
+ // TODO: Actually parse the request. :-)
+ client->stream_id = "stream";
+
+ // Construct the header.
+ client->header = "HTTP/1.0 200 OK\r\nContent-type: todo/fixme\r\n\r\n" +
+ streams[client->stream_id].header;
+
+ // Switch states.
+ client->state = Client::SENDING_HEADER;
+
+ epoll_event ev;
+ ev.events = EPOLLOUT | EPOLLRDHUP;
+ ev.data.fd = client->sock;
+
+ if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, client->sock, &ev) == -1) {
+ perror("epoll_ctl(EPOLL_CTL_MOD)");
+ exit(1);
+ }
+}
void Server::close_client(Client *client)
{