1 #ifndef LI_H2_H 2 #define LI_H2_H 3 #include "first.h" 4 5 #include "sys-time.h" 6 7 #include "base_decls.h" 8 #include "buffer.h" 9 10 #include "ls-hpack/lshpack.h" 11 12 struct chunkqueue; /* declaration */ 13 14 typedef enum { 15 H2_FTYPE_DATA = 0x00, 16 H2_FTYPE_HEADERS = 0x01, 17 H2_FTYPE_PRIORITY = 0x02, 18 H2_FTYPE_RST_STREAM = 0x03, 19 H2_FTYPE_SETTINGS = 0x04, 20 H2_FTYPE_PUSH_PROMISE = 0x05, 21 H2_FTYPE_PING = 0x06, 22 H2_FTYPE_GOAWAY = 0x07, 23 H2_FTYPE_WINDOW_UPDATE = 0x08, 24 H2_FTYPE_CONTINUATION = 0x09 25 } request_h2ftype_t; 26 27 typedef enum { 28 H2_SETTINGS_HEADER_TABLE_SIZE = 0x01, 29 H2_SETTINGS_ENABLE_PUSH = 0x02, 30 H2_SETTINGS_MAX_CONCURRENT_STREAMS = 0x03, 31 H2_SETTINGS_INITIAL_WINDOW_SIZE = 0x04, 32 H2_SETTINGS_MAX_FRAME_SIZE = 0x05, 33 H2_SETTINGS_MAX_HEADER_LIST_SIZE = 0x06 34 } request_h2settings_t; 35 36 typedef enum { 37 H2_FLAG_END_STREAM = 0x01, /* DATA HEADERS */ 38 H2_FLAG_END_HEADERS = 0x04, /* HEADERS PUSH_PROMISE CONTINUATION */ 39 H2_FLAG_PADDED = 0x08, /* DATA HEADERS PUSH_PROMISE */ 40 H2_FLAG_PRIORITY = 0x20, /* HEADERS */ 41 H2_FLAG_ACK = 0x01 /* PING SETTINGS*/ 42 } request_h2flag_t; 43 44 typedef enum { 45 H2_E_NO_ERROR = 0x00, 46 H2_E_PROTOCOL_ERROR = 0x01, 47 H2_E_INTERNAL_ERROR = 0x02, 48 H2_E_FLOW_CONTROL_ERROR = 0x03, 49 H2_E_SETTINGS_TIMEOUT = 0x04, 50 H2_E_STREAM_CLOSED = 0x05, 51 H2_E_FRAME_SIZE_ERROR = 0x06, 52 H2_E_REFUSED_STREAM = 0x07, 53 H2_E_CANCEL = 0x08, 54 H2_E_COMPRESSION_ERROR = 0x09, 55 H2_E_CONNECT_ERROR = 0x0a, 56 H2_E_ENHANCE_YOUR_CALM = 0x0b, 57 H2_E_INADEQUATE_SECURITY = 0x0c, 58 H2_E_HTTP_1_1_REQUIRED = 0x0d 59 } request_h2error_t; 60 61 typedef enum { 62 H2_STATE_IDLE, 63 H2_STATE_RESERVED_LOCAL, 64 H2_STATE_RESERVED_REMOTE, 65 H2_STATE_OPEN, 66 H2_STATE_HALF_CLOSED_LOCAL, 67 H2_STATE_HALF_CLOSED_REMOTE, 68 H2_STATE_CLOSED 69 } request_h2state_t; 70 71 struct h2con { 72 request_st *r[8]; 73 uint32_t rused; 74 75 uint32_t h2_cid; 76 uint32_t h2_sid; 77 int32_t sent_goaway; 78 unix_time64_t sent_settings; 79 uint32_t s_header_table_size; /* SETTINGS_HEADER_TABLE_SIZE */ 80 uint32_t s_enable_push; /* SETTINGS_ENABLE_PUSH */ 81 uint32_t s_max_concurrent_streams; /* SETTINGS_MAX_CONCURRENT_STREAMS */ 82 int32_t s_initial_window_size; /* SETTINGS_INITIAL_WINDOW_SIZE */ 83 uint32_t s_max_frame_size; /* SETTINGS_MAX_FRAME_SIZE */ 84 uint32_t s_max_header_list_size; /* SETTINGS_MAX_HEADER_LIST_SIZE */ 85 struct lshpack_dec decoder; 86 struct lshpack_enc encoder; 87 unix_time64_t half_closed_ts; 88 }; 89 90 void h2_send_goaway (connection *con, request_h2error_t e); 91 92 int h2_parse_frames (connection *con); 93 94 int h2_want_read (connection *con); 95 96 void h2_init_con (request_st * restrict h2r, connection * restrict con, const buffer * restrict http2_settings); 97 98 int h2_send_1xx (request_st *r, connection *con); 99 100 void h2_send_100_continue (request_st *r, connection *con); 101 102 void h2_send_headers (request_st *r, connection *con); 103 104 uint32_t h2_send_cqdata (request_st *r, connection *con, struct chunkqueue *cq, uint32_t dlen); 105 106 void h2_send_end_stream (request_st *r, connection *con); 107 108 void h2_retire_stream (request_st *r, connection *con); 109 110 void h2_retire_con (request_st *h2r, connection *con); 111 112 __attribute_cold__ 113 __attribute_noinline__ 114 int h2_check_con_upgrade_h2c (request_st *r); 115 116 #endif 117