90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
#ifndef HV_GRPC_DEF_H_
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#define HV_GRPC_DEF_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Length-Prefixed-Message
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// flags:1byte + length:4bytes = 5bytes
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#define GRPC_MESSAGE_HDLEN 5
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typedef struct {
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unsigned char flags;
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unsigned int length;
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} grpc_message_hd;
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typedef struct {
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unsigned char flags;
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unsigned int length;
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unsigned char* message;
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} grpc_message;
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static inline void grpc_message_hd_pack(const grpc_message_hd* hd, unsigned char* buf) {
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unsigned char* p = buf;
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// flags
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*p++ = hd->flags;
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// hton length
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unsigned int length = hd->length;
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*p++ = (length >> 24) & 0xFF;
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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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}
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static inline void grpc_message_hd_unpack(grpc_message_hd* hd, const unsigned char* buf) {
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const unsigned char* p = buf;
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// flags
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hd->flags = *p++;
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// ntoh length
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hd->length = ((unsigned int)*p++) << 24;
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hd->length |= ((unsigned int)*p++) << 16;
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hd->length |= ((unsigned int)*p++) << 8;
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hd->length |= *p++;
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}
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// protobuf
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// tag = field_num << 3 | wire_type
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// varint(tag) [+ varint(length_delimited)] + value;
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typedef enum {
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WIRE_TYPE_VARINT = 0,
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WIRE_TYPE_FIXED64 = 1,
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WIRE_TYPE_LENGTH_DELIMITED = 2,
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WIRE_TYPE_START_GROUP = 3,
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WIRE_TYPE_END_GROUP = 4,
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WIRE_TYPE_FIXED32 = 5,
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} wire_type;
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typedef enum {
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FIELD_TYPE_DOUBLE = 1,
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FIELD_TYPE_FLOAT = 2,
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FIELD_TYPE_INT64 = 3,
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FIELD_TYPE_UINT64 = 4,
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FIELD_TYPE_INT32 = 5,
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FIELD_TYPE_FIXED64 = 6,
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FIELD_TYPE_FIXED32 = 7,
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FIELD_TYPE_BOOL = 8,
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FIELD_TYPE_STRING = 9,
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FIELD_TYPE_GROUP = 10,
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FIELD_TYPE_MESSAGE = 11,
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FIELD_TYPE_BYTES = 12,
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FIELD_TYPE_UINT32 = 13,
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FIELD_TYPE_ENUM = 14,
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FIELD_TYPE_SFIXED32 = 15,
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FIELD_TYPE_SFIXED64 = 16,
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FIELD_TYPE_SINT32 = 17,
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FIELD_TYPE_SINT64 = 18,
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MAX_FIELD_TYPE = 18,
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} field_type;
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#define PROTOBUF_MAKE_TAG(field_number, wire_type) ((field_number) << 3 | (wire_type))
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#define PROTOBUF_FILED_NUMBER(tag) ((tag) >> 3)
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#define PROTOBUF_WIRE_TYPE(tag) ((tag) & 0x07)
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#ifdef __cplusplus
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}
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#endif
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#endif // HV_GRPC_DEF_H_
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