liusheng

apt-get update && apt-get install -y make cmake gcc g++ patch

curl -sSL https://github.com/protocolbuffers/protobuf/releases/download/v2.5.0/protobuf-2.5.0.tar.gz | tar zx -C /opt/
cd /opt/protobuf-2.5.0
curl -L -O https://gist.githubusercontent.com/liusheng/64aee1b27de037f8b9ccf1873b82c413/raw/118c2fce733a9a62a03281753572a45b6efb8639/protobuf-2.5.0-arm64.patch
patch -p1 < protobuf-2.5.0-arm64.patch
./configure --disable-shared
make
ls -l src/protoc

jkomyno

// Convert a struct sockaddr address to a string, IPv4 and IPv6:

char *get_ip_str(const struct sockaddr *sa, char *s, size_t maxlen)
{
    switch(sa->sa_family) {
        case AF_INET:
            inet_ntop(AF_INET, &(((struct sockaddr_in *)sa)->sin_addr),
                    s, maxlen);
            break;