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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Tianfeng Han <mikan.tenny@gmail.com> |
+----------------------------------------------------------------------+
*/
#ifndef SW_HTTP2_H_
#define SW_HTTP2_H_
#ifdef __cplusplus
extern "C"
{
#endif
#define SW_HTTP2_PRI_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
enum swHttp2ErrorCode
{
SW_HTTP2_ERROR_NO_ERROR = 0,
SW_HTTP2_ERROR_PROTOCOL_ERROR = 1,
SW_HTTP2_ERROR_INTERNAL_ERROR = 2,
SW_HTTP2_ERROR_FLOW_CONTROL_ERROR = 3,
SW_HTTP2_ERROR_SETTINGS_TIMEOUT = 4,
SW_HTTP2_ERROR_STREAM_CLOSED = 5,
SW_HTTP2_ERROR_FRAME_SIZE_ERROR = 6,
SW_HTTP2_ERROR_REFUSED_STREAM = 7,
SW_HTTP2_ERROR_CANCEL = 8,
SW_HTTP2_ERROR_COMPRESSION_ERROR = 9,
SW_HTTP2_ERROR_CONNECT_ERROR = 10,
SW_HTTP2_ERROR_ENHANCE_YOUR_CALM = 11,
SW_HTTP2_ERROR_INADEQUATE_SECURITY = 12,
};
enum swHttp2FrameType
{
SW_HTTP2_TYPE_DATA = 0,
SW_HTTP2_TYPE_HEADERS = 1,
SW_HTTP2_TYPE_PRIORITY = 2,
SW_HTTP2_TYPE_RST_STREAM = 3,
SW_HTTP2_TYPE_SETTINGS = 4,
SW_HTTP2_TYPE_PUSH_PROMISE = 5,
SW_HTTP2_TYPE_PING = 6,
SW_HTTP2_TYPE_GOAWAY = 7,
SW_HTTP2_TYPE_WINDOW_UPDATE = 8,
SW_HTTP2_TYPE_CONTINUATION = 9,
};
enum swHttp2FrameFlag
{
SW_HTTP2_FLAG_NONE = 0x00,
SW_HTTP2_FLAG_ACK = 0x01,
SW_HTTP2_FLAG_END_STREAM = 0x01,
SW_HTTP2_FLAG_END_HEADERS = 0x04,
SW_HTTP2_FLAG_PADDED = 0x08,
SW_HTTP2_FLAG_PRIORITY = 0x20,
};
enum swHttp2SettingId
{
SW_HTTP2_SETTING_HEADER_TABLE_SIZE = 0x1,
SW_HTTP2_SETTINGS_ENABLE_PUSH = 0x2,
SW_HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS = 0x3,
SW_HTTP2_SETTINGS_INIT_WINDOW_SIZE = 0x4,
SW_HTTP2_SETTINGS_MAX_FRAME_SIZE = 0x5,
SW_HTTP2_SETTINGS_MAX_HEADER_LIST_SIZE = 0x6,
};
enum swHttp2StreamType
{
SW_HTTP2_STREAM_NORMAL = 0,
SW_HTTP2_STREAM_PIPELINE = 1,
};
#define SW_HTTP2_FRAME_HEADER_SIZE 9
#define SW_HTTP2_SETTING_OPTION_SIZE 6
#define SW_HTTP2_FRAME_PING_PAYLOAD_SIZE 8
#define SW_HTTP2_RST_STREAM_SIZE 4
#define SW_HTTP2_PRIORITY_SIZE 5
#define SW_HTTP2_PING_SIZE 8
#define SW_HTTP2_GOAWAY_SIZE 8
#define SW_HTTP2_WINDOW_UPDATE_SIZE 4
#define SW_HTTP2_STREAM_ID_SIZE 4
#define SW_HTTP2_SETTINGS_PARAM_SIZE 6
#define swHttp2FrameTraceLogFlags \
((flags & SW_HTTP2_FLAG_ACK) ? "\nEND_ACK |" : ""), \
((flags & SW_HTTP2_FLAG_END_STREAM) ? "\nEND_STREAM |" : ""), \
((flags & SW_HTTP2_FLAG_END_HEADERS) ? "\nEND_HEADERS |" : ""), \
((flags & SW_HTTP2_FLAG_PADDED) ? "\nEND_PADDED |" : ""), \
((flags & SW_HTTP2_FLAG_PRIORITY) ? "\nEND_PRIORITY |" : "")
#define swHttp2FrameTraceLog(recv, str, ...) \
swTraceLog( \
SW_TRACE_HTTP2, \
"\nrecv [" "\e[3" "%d" "m" "%s" "\e[0m" "] frame <length=%jd, flags=%d, stream_id=%d> " str "%s%s%s%s%s", \
swHttp2_get_type_color(type), swHttp2_get_type(type), length, flags, stream_id, \
##__VA_ARGS__, \
swHttp2FrameTraceLogFlags \
);
typedef struct
{
uint32_t header_table_size;
uint32_t window_size;
uint32_t max_concurrent_streams;
uint32_t max_frame_size;
uint32_t max_header_list_size;
} swHttp2_settings;
/**
+-----------------------------------------------+
| Length (24) |
+---------------+---------------+---------------+
| Type (8) | Flags (8) |
+-+-------------+---------------+-------------------------------+
|R| Stream Identifier (31) |
+=+=============================================================+
| Frame Payload (0...) ...
+---------------------------------------------------------------+
*/
typedef struct
{
uint32_t length :24;
uint32_t type :8;
uint32_t flags :8;
uint32_t rsv1 :1;
uint32_t identifier :31;
char data[0];
} swHttp2_frame;
static sw_inline ssize_t swHttp2_get_length(char *buf)
{
return (((uint8_t) buf[0]) << 16) + (((uint8_t) buf[1]) << 8) + (uint8_t) buf[2];
}
ssize_t swHttp2_get_frame_length(swProtocol *protocol, swConnection *conn, char *buf, uint32_t length);
int swHttp2_send_setting_frame(swProtocol *protocol, swConnection *conn);
char* swHttp2_get_type(int type);
int swHttp2_get_type_color(int type);
static sw_inline void swHttp2_init_settings(swHttp2_settings *settings)
{
settings->header_table_size = SW_HTTP2_DEFAULT_HEADER_TABLE_SIZE;
settings->window_size = SW_HTTP2_DEFAULT_WINDOW_SIZE;
settings->max_concurrent_streams = SW_HTTP2_MAX_MAX_CONCURRENT_STREAMS;
settings->max_frame_size = SW_HTTP2_MAX_MAX_FRAME_SIZE;
settings->max_header_list_size = SW_HTTP2_DEFAULT_MAX_HEADER_LIST_SIZE;
}
/**
+-----------------------------------------------+
| Length (24) |
+---------------+---------------+---------------+
| Type (8) | Flags (8) |
+-+-------------+---------------+-------------------------------+
|R| Stream Identifier (31) |
+=+=============================================================+
| Frame Payload (0...) ...
+---------------------------------------------------------------+
*/
static sw_inline void swHttp2_set_frame_header(char *buffer, uint8_t type, uint32_t length, uint8_t flags, uint32_t stream_id)
{
buffer[0] = length >> 16;
buffer[1] = length >> 8;
buffer[2] = length;
buffer[3] = type;
buffer[4] = flags;
*(uint32_t *) (buffer + 5) = htonl(stream_id);
}
#ifdef __cplusplus
}
#endif
#endif /* SW_HTTP2_H_ */
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