Method DecodeWithKnownPrefix

src/brpc/details/hpack.cpp:733–763

}

inline ssize_t HPacker::DecodeWithKnownPrefix(
    butil::IOBufBytesIterator& iter, Header* h, uint8_t prefix_size) const {
    int index = 0;
    ssize_t index_bytes = DecodeInteger(iter, prefix_size, (uint32_t*)&index);
    ssize_t name_bytes = 0;
    if (index_bytes <= 0) {
        LOG(ERROR) << "Fail to decode index";
        return -1;
    }
    if (index != 0) {
        const Header* indexed_header = HeaderAt(index);
        if (indexed_header == NULL) {
            LOG(ERROR) << "No header at index=" << index;
            return -1;
        }
        h->name = indexed_header->name;
    } else {
        name_bytes = DecodeString(iter, &h->name);
        if (name_bytes <= 0) {
            LOG(ERROR) << "Fail to decode name";
            return -1;
        }
        tolower(&h->name);
    }
    ssize_t value_bytes = DecodeString(iter, &h->value);
    if (value_bytes <= 0) {
        LOG(ERROR) << "Fail to decode value";
        return -1;
    }
    return index_bytes + name_bytes + value_bytes;
}

ssize_t HPacker::Decode(butil::IOBufBytesIterator& iter, Header* h) {
    if (iter == NULL) {