Linux Capabilities Privileged port

gistfile1.txt

static_website_tls git:master ❯ ./https --https=443                                                                                                                                                                                                                                                                        
2017-06-02 23:33:48 +02:00: INF [tcpip-stack-socket] Manager: connect
2017-06-02 23:33:48 +02:00: INF [tcpip-stack-socket] Manager: configuring
2017-06-02 23:33:48 +02:00: INF [https] listening on 443/TCP
2017-06-02 23:33:48 +02:00: ERR [application] main: Unix.Unix_error(Unix.EACCES, "bind", "")
Raised by primitive operation at file "src/unix/lwt_unix.cppo.ml", line 1615, characters 52-74
Called from file "unix/tcpip_stack_socket.ml", line 113, characters 6-73
Called from file "lib/conduit_mirage.ml", line 207, characters 4-113
Called from file "dispatch.ml", line 90, characters 6-45
Called from file "src/core/lwt.ml", line 670, characters 66-69

static_website_tls git:master ❯ sudo setcap cap_net_bind_service=+ep _build/main.native
static_website_tls git:master ❯ ./https --https=443
2017-06-02 23:34:28 +02:00: INF [tcpip-stack-socket] Manager: connect
2017-06-02 23:34:28 +02:00: INF [tcpip-stack-socket] Manager: configuring
2017-06-02 23:34:28 +02:00: INF [https] listening on 443/TCP
2017-06-02 23:34:28 +02:00: INF [http] listening on 8080/TCP
2017-06-02 23:34:37 +02:00: INF [https] [1] closing
2017-06-02 23:34:37 +02:00: INF [https] [2] serving //localhost/.
2017-06-02 23:34:38 +02:00: INF [https] [2] serving //localhost/favicon.ico.