Function SetFlags

util/network/socket.cpp:1127–1131

}

static inline void SetFlags(int fd, int flags) {
    if (fcntl(fd, F_SETFL, flags) == -1) {
        ythrow TSystemError() << "can not set fd flags";
    }
}

static inline void EnableFlag(int fd, int flag) {
    const int oldf = GetFlags(fd);