87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
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#ifndef HV_HTTP2_DEF_H_
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#define HV_HTTP2_DEF_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define HTTP2_MAGIC "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
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#define HTTP2_MAGIC_LEN 24
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// length:3bytes + type:1byte + flags:1byte + stream_id:4bytes = 9bytes
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#define HTTP2_FRAME_HDLEN 9
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#define HTTP2_UPGRADE_RESPONSE \
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"HTTP/1.1 101 Switching Protocols\r\n"\
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"Connection: Upgrade\r\n"\
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"Upgrade: h2c\r\n\r\n"
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typedef enum {
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HTTP2_DATA = 0,
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HTTP2_HEADERS = 0x01,
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HTTP2_PRIORITY = 0x02,
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HTTP2_RST_STREAM = 0x03,
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HTTP2_SETTINGS = 0x04,
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HTTP2_PUSH_PROMISE = 0x05,
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HTTP2_PING = 0x06,
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HTTP2_GOAWAY = 0x07,
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HTTP2_WINDOW_UPDATE = 0x08,
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HTTP2_CONTINUATION = 0x09,
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HTTP2_ALTSVC = 0x0a,
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HTTP2_ORIGIN = 0x0c
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} http2_frame_type;
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typedef enum {
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HTTP2_FLAG_NONE = 0,
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HTTP2_FLAG_END_STREAM = 0x01,
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HTTP2_FLAG_END_HEADERS = 0x04,
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HTTP2_FLAG_PADDED = 0x08,
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HTTP2_FLAG_PRIORITY = 0x20
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} http2_flag;
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typedef struct {
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int length;
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http2_frame_type type;
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http2_flag flags;
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int stream_id;
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} http2_frame_hd;
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static inline void http2_frame_hd_pack(const http2_frame_hd* hd, unsigned char* buf) {
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// hton
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int length = hd->length;
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int stream_id = hd->stream_id;
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unsigned char* p = buf;
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*p++ = (length >> 16) & 0xFF;
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*p++ = (length >> 8) & 0xFF;
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*p++ = length & 0xFF;
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*p++ = (unsigned char)hd->type;
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*p++ = (unsigned char)hd->flags;
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*p++ = (stream_id >> 24) & 0xFF;
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*p++ = (stream_id >> 16) & 0xFF;
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*p++ = (stream_id >> 8) & 0xFF;
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*p++ = stream_id & 0xFF;
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}
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static inline void http2_frame_hd_unpack(const unsigned char* buf, http2_frame_hd* hd) {
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// ntoh
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const unsigned char* p = buf;
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hd->length = *p++ << 16;
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hd->length += *p++ << 8;
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hd->length += *p++;
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hd->type = (http2_frame_type)*p++;
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hd->flags = (http2_flag)*p++;
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hd->stream_id = *p++ << 24;
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hd->stream_id += *p++ << 16;
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hd->stream_id += *p++ << 8;
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hd->stream_id += *p++;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // HV_HTTP2_DEF_H_
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