10 #define BACKLOG_SIZE 1048576
11 #define EPOLL_MAX_EVENTS 8192
12 #define EPOLL_TIMEOUT_MS 20
13 #define MAX_CLIENT_REQUEST 16384
16 // The file descriptor associated with this socket.
19 enum State { READING_REQUEST, SENDING_HEADER, SENDING_DATA };
22 // The HTTP request, as sent by the client. If we are in READING_REQUEST,
23 // this might not be finished.
24 std::string client_request;
27 // What stream we're connecting to; parsed from client_request.
28 // Not relevant for READING_REQUEST.
32 // Number of bytes we've sent of the header. Only relevant for SENDING_HEADER.
33 size_t header_bytes_sent;
35 // Number of bytes we've sent of data. Only relevant for SENDING_DATA.
40 // The HTTP response header, plus the video stream header (if any).
43 // The stream data itself, stored in a circular buffer.
44 char data[BACKLOG_SIZE];
46 // How many bytes <data> contains. Can very well be larger than BACKLOG_SIZE,
47 // since the buffer wraps.
55 // Start a new thread that handles clients.
57 void add_client(int sock);
58 void add_stream(const std::string &stream_id);
59 void set_header(const std::string &stream_id, const std::string &header);
60 void add_data(const std::string &stream_id, const char *data, size_t bytes);
63 void process_client(Client *client);
64 void close_client(Client *client);
66 pthread_mutex_t mutex;
68 // Map from stream ID to stream.
69 std::map<std::string, Stream> streams;
71 // Map from file descriptor to client.
72 std::map<int, Client> clients;
74 // Used for epoll implementation (obviously).
76 epoll_event events[EPOLL_MAX_EVENTS];
78 // Recover the this pointer, and call do_work().
79 static void *do_work_thunk(void *arg);
81 // The actual worker thread.
85 #endif // !defined(_SERVER_H)