diff --git a/README.md b/README.md
index ed27ff8..53748cb 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,11 @@
 **netio** is a networking library for V programming language.
 This implementation aims to be as flexible and portable.
 It heavily relies on the libc.
+
+Differences with the V standard library **net** module:
+
+* Provides the low-level wrappers around C API functions.
+* Supports any kind of: socket type, socket option, address family and protocol.
+
+**netio** provides a high-level abstractions over BSD sockets: `TCPListener`,
+`TCPStream`, `UDPSocket`.
diff --git a/af_darwin.c.v b/af_darwin.c.v
index 0c380b7..6a60756 100644
--- a/af_darwin.c.v
+++ b/af_darwin.c.v
@@ -4,41 +4,41 @@ module netio
 	Address families defined on Darwin.
 */
 
-pub const af_appletalk = AddrFamily(u16(C.AF_APPLETALK))
-pub const af_ccitt = AddrFamily(u16(C.AF_CCITT))
-pub const af_chaos = AddrFamily(u16(C.AF_CHAOS))
-pub const af_cnt = AddrFamily(u16(C.AF_CNT))
-pub const af_coip = AddrFamily(u16(C.AF_COIP))
-pub const af_datakit = AddrFamily(u16(C.AF_DATAKIT))
-pub const af_decnet = AddrFamily(u16(C.AF_DECnet))
-pub const af_dli = AddrFamily(u16(C.AF_DLI))
-pub const af_e164 = AddrFamily(u16(C.AF_E164))
-pub const af_ecma = AddrFamily(u16(C.AF_ECMA))
-pub const af_hylink = AddrFamily(u16(C.AF_HYLINK))
-pub const af_ieee80211 = AddrFamily(u16(C.AF_IEEE80211))
-pub const af_implink = AddrFamily(u16(C.AF_IMPLINK))
-pub const af_inet6 = AddrFamily(u16(C.AF_INET6))
-pub const af_inet = AddrFamily(u16(C.AF_INET))
-pub const af_ipx = AddrFamily(u16(C.AF_IPX))
-pub const af_isdn = AddrFamily(u16(C.AF_ISDN))
-pub const af_iso = AddrFamily(u16(C.AF_ISO))
-pub const af_lat = AddrFamily(u16(C.AF_LAT))
-pub const af_link = AddrFamily(u16(C.AF_LINK))
-pub const af_local = AddrFamily(u16(C.AF_LOCAL))
-pub const af_max = AddrFamily(u16(C.AF_MAX))
-pub const af_natm = AddrFamily(u16(C.AF_NATM))
-pub const af_ndrv = AddrFamily(u16(C.AF_NDRV))
-pub const af_netbios = AddrFamily(u16(C.AF_NETBIOS))
-pub const af_ns = AddrFamily(u16(C.AF_NS))
-pub const af_osi = AddrFamily(u16(C.AF_OSI))
-pub const af_ppp = AddrFamily(u16(C.AF_PPP))
-pub const af_pup = AddrFamily(u16(C.AF_PUP))
-pub const af_reserved_36 = AddrFamily(u16(C.AF_RESERVED_36))
-pub const af_route = AddrFamily(u16(C.AF_ROUTE))
-pub const af_sip = AddrFamily(u16(C.AF_SIP))
-pub const af_sna = AddrFamily(u16(C.AF_SNA))
-pub const af_system = AddrFamily(u16(C.AF_SYSTEM))
-pub const af_unix = AddrFamily(u16(C.AF_UNIX))
-pub const af_unspec = AddrFamily(u16(C.AF_UNSPEC))
-pub const af_utun = AddrFamily(u16(C.AF_UTUN))
-pub const af_vsock = AddrFamily(u16(C.AF_VSOCK))
+pub const af_appletalk = AddrFamily(C.AF_APPLETALK)
+pub const af_ccitt = AddrFamily(C.AF_CCITT)
+pub const af_chaos = AddrFamily(C.AF_CHAOS)
+pub const af_cnt = AddrFamily(C.AF_CNT)
+pub const af_coip = AddrFamily(C.AF_COIP)
+pub const af_datakit = AddrFamily(C.AF_DATAKIT)
+pub const af_decnet = AddrFamily(C.AF_DECnet)
+pub const af_dli = AddrFamily(C.AF_DLI)
+pub const af_e164 = AddrFamily(C.AF_E164)
+pub const af_ecma = AddrFamily(C.AF_ECMA)
+pub const af_hylink = AddrFamily(C.AF_HYLINK)
+pub const af_ieee80211 = AddrFamily(C.AF_IEEE80211)
+pub const af_implink = AddrFamily(C.AF_IMPLINK)
+pub const af_inet6 = AddrFamily(C.AF_INET6)
+pub const af_inet = AddrFamily(C.AF_INET)
+pub const af_ipx = AddrFamily(C.AF_IPX)
+pub const af_isdn = AddrFamily(C.AF_ISDN)
+pub const af_iso = AddrFamily(C.AF_ISO)
+pub const af_lat = AddrFamily(C.AF_LAT)
+pub const af_link = AddrFamily(C.AF_LINK)
+pub const af_local = AddrFamily(C.AF_LOCAL)
+pub const af_max = AddrFamily(C.AF_MAX)
+pub const af_natm = AddrFamily(C.AF_NATM)
+pub const af_ndrv = AddrFamily(C.AF_NDRV)
+pub const af_netbios = AddrFamily(C.AF_NETBIOS)
+pub const af_ns = AddrFamily(C.AF_NS)
+pub const af_osi = AddrFamily(C.AF_OSI)
+pub const af_ppp = AddrFamily(C.AF_PPP)
+pub const af_pup = AddrFamily(C.AF_PUP)
+pub const af_reserved_36 = AddrFamily(C.AF_RESERVED_36)
+pub const af_route = AddrFamily(C.AF_ROUTE)
+pub const af_sip = AddrFamily(C.AF_SIP)
+pub const af_sna = AddrFamily(C.AF_SNA)
+pub const af_system = AddrFamily(C.AF_SYSTEM)
+pub const af_unix = AddrFamily(C.AF_UNIX)
+pub const af_unspec = AddrFamily(C.AF_UNSPEC)
+pub const af_utun = AddrFamily(C.AF_UTUN)
+pub const af_vsock = AddrFamily(C.AF_VSOCK)
diff --git a/af_default.c.v b/af_default.c.v
index 4e556a3..a2c401c 100644
--- a/af_default.c.v
+++ b/af_default.c.v
@@ -4,7 +4,7 @@ module netio
 	Well defined address families. Must work on all platforms.
 */
 
-pub const af_unspec = AddrFamily(u16(C.AF_UNSPEC))
-pub const af_unix = AddrFamily(u16(C.AF_UNIX))
-pub const af_inet = AddrFamily(u16(C.AF_INET))
-pub const af_inet6 = AddrFamily(u16(C.AF_INET6))
+pub const af_unspec = AddrFamily(C.AF_UNSPEC)
+pub const af_unix = AddrFamily(C.AF_UNIX)
+pub const af_inet = AddrFamily(C.AF_INET)
+pub const af_inet6 = AddrFamily(C.AF_INET6)
diff --git a/af_freebsd.c.v b/af_freebsd.c.v
index c46f482..b239173 100644
--- a/af_freebsd.c.v
+++ b/af_freebsd.c.v
@@ -4,93 +4,93 @@ module netio
 	Address families defined on FreeBSD.
 */
 
-pub const af_appletalk = AddrFamily(u16(C.AF_APPLETALK))
-pub const af_arp = AddrFamily(u16(C.AF_ARP))
-pub const af_atm = AddrFamily(u16(C.AF_ATM))
-pub const af_bluetooth = AddrFamily(u16(C.AF_BLUETOOTH))
-pub const af_ccitt = AddrFamily(u16(C.AF_CCITT))
-pub const af_chaos = AddrFamily(u16(C.AF_CHAOS))
-pub const af_cnt = AddrFamily(u16(C.AF_CNT))
-pub const af_coip = AddrFamily(u16(C.AF_COIP))
-pub const af_datakit = AddrFamily(u16(C.AF_DATAKIT))
-pub const af_decnet = AddrFamily(u16(C.AF_DECnet))
-pub const af_divert = AddrFamily(u16(C.AF_DIVERT))
-pub const af_dli = AddrFamily(u16(C.AF_DLI))
-pub const af_e164 = AddrFamily(u16(C.AF_E164))
-pub const af_ecma = AddrFamily(u16(C.AF_ECMA))
-pub const af_hylink = AddrFamily(u16(C.AF_HYLINK))
-pub const af_hyperv = AddrFamily(u16(C.AF_HYPERV))
-pub const af_ieee80211 = AddrFamily(u16(C.AF_IEEE80211))
-pub const af_implink = AddrFamily(u16(C.AF_IMPLINK))
-pub const af_inet6 = AddrFamily(u16(C.AF_INET6))
-pub const af_inet6_sdp = AddrFamily(u16(C.AF_INET6_SDP))
-pub const af_inet = AddrFamily(u16(C.AF_INET))
-pub const af_inet_sdp = AddrFamily(u16(C.AF_INET_SDP))
-pub const af_ipfwlog = AddrFamily(u16(C.AF_IPFWLOG))
-pub const af_ipx = AddrFamily(u16(C.AF_IPX))
-pub const af_isdn = AddrFamily(u16(C.AF_ISDN))
-pub const af_iso = AddrFamily(u16(C.AF_ISO))
-pub const af_lat = AddrFamily(u16(C.AF_LAT))
-pub const af_link = AddrFamily(u16(C.AF_LINK))
-pub const af_local = AddrFamily(u16(C.AF_LOCAL))
-pub const af_max = AddrFamily(u16(C.AF_MAX))
-pub const af_natm = AddrFamily(u16(C.AF_NATM))
-pub const af_netbios = AddrFamily(u16(C.AF_NETBIOS))
-pub const af_netgraph = AddrFamily(u16(C.AF_NETGRAPH))
-pub const af_netlink = AddrFamily(u16(C.AF_NETLINK))
-pub const af_osi = AddrFamily(u16(C.AF_OSI))
-pub const af_pup = AddrFamily(u16(C.AF_PUP))
-pub const af_route = AddrFamily(u16(C.AF_ROUTE))
-pub const af_scluster = AddrFamily(u16(C.AF_SCLUSTER))
-pub const af_sip = AddrFamily(u16(C.AF_SIP))
-pub const af_slow = AddrFamily(u16(C.AF_SLOW))
-pub const af_sna = AddrFamily(u16(C.AF_SNA))
-pub const af_unix = AddrFamily(u16(C.AF_UNIX))
-pub const af_unspec = AddrFamily(u16(C.AF_UNSPEC))
-pub const af_vendor00 = AddrFamily(u16(C.AF_VENDOR00))
-pub const af_vendor01 = AddrFamily(u16(C.AF_VENDOR01))
-pub const af_vendor03 = AddrFamily(u16(C.AF_VENDOR03))
-pub const af_vendor04 = AddrFamily(u16(C.AF_VENDOR04))
-pub const af_vendor05 = AddrFamily(u16(C.AF_VENDOR05))
-pub const af_vendor06 = AddrFamily(u16(C.AF_VENDOR06))
-pub const af_vendor07 = AddrFamily(u16(C.AF_VENDOR07))
-pub const af_vendor08 = AddrFamily(u16(C.AF_VENDOR08))
-pub const af_vendor09 = AddrFamily(u16(C.AF_VENDOR09))
-pub const af_vendor10 = AddrFamily(u16(C.AF_VENDOR10))
-pub const af_vendor11 = AddrFamily(u16(C.AF_VENDOR11))
-pub const af_vendor12 = AddrFamily(u16(C.AF_VENDOR12))
-pub const af_vendor13 = AddrFamily(u16(C.AF_VENDOR13))
-pub const af_vendor14 = AddrFamily(u16(C.AF_VENDOR14))
-pub const af_vendor15 = AddrFamily(u16(C.AF_VENDOR15))
-pub const af_vendor16 = AddrFamily(u16(C.AF_VENDOR16))
-pub const af_vendor17 = AddrFamily(u16(C.AF_VENDOR17))
-pub const af_vendor18 = AddrFamily(u16(C.AF_VENDOR18))
-pub const af_vendor19 = AddrFamily(u16(C.AF_VENDOR19))
-pub const af_vendor20 = AddrFamily(u16(C.AF_VENDOR20))
-pub const af_vendor21 = AddrFamily(u16(C.AF_VENDOR21))
-pub const af_vendor22 = AddrFamily(u16(C.AF_VENDOR22))
-pub const af_vendor23 = AddrFamily(u16(C.AF_VENDOR23))
-pub const af_vendor24 = AddrFamily(u16(C.AF_VENDOR24))
-pub const af_vendor25 = AddrFamily(u16(C.AF_VENDOR25))
-pub const af_vendor26 = AddrFamily(u16(C.AF_VENDOR26))
-pub const af_vendor27 = AddrFamily(u16(C.AF_VENDOR27))
-pub const af_vendor28 = AddrFamily(u16(C.AF_VENDOR28))
-pub const af_vendor29 = AddrFamily(u16(C.AF_VENDOR29))
-pub const af_vendor30 = AddrFamily(u16(C.AF_VENDOR30))
-pub const af_vendor31 = AddrFamily(u16(C.AF_VENDOR31))
-pub const af_vendor32 = AddrFamily(u16(C.AF_VENDOR32))
-pub const af_vendor33 = AddrFamily(u16(C.AF_VENDOR33))
-pub const af_vendor34 = AddrFamily(u16(C.AF_VENDOR34))
-pub const af_vendor35 = AddrFamily(u16(C.AF_VENDOR35))
-pub const af_vendor36 = AddrFamily(u16(C.AF_VENDOR36))
-pub const af_vendor37 = AddrFamily(u16(C.AF_VENDOR37))
-pub const af_vendor38 = AddrFamily(u16(C.AF_VENDOR38))
-pub const af_vendor39 = AddrFamily(u16(C.AF_VENDOR39))
-pub const af_vendor40 = AddrFamily(u16(C.AF_VENDOR40))
-pub const af_vendor41 = AddrFamily(u16(C.AF_VENDOR41))
-pub const af_vendor42 = AddrFamily(u16(C.AF_VENDOR42))
-pub const af_vendor43 = AddrFamily(u16(C.AF_VENDOR43))
-pub const af_vendor44 = AddrFamily(u16(C.AF_VENDOR44))
-pub const af_vendor45 = AddrFamily(u16(C.AF_VENDOR45))
-pub const af_vendor46 = AddrFamily(u16(C.AF_VENDOR46))
-pub const af_vendor47 = AddrFamily(u16(C.AF_VENDOR47))
+pub const af_appletalk = AddrFamily(C.AF_APPLETALK)
+pub const af_arp = AddrFamily(C.AF_ARP)
+pub const af_atm = AddrFamily(C.AF_ATM)
+pub const af_bluetooth = AddrFamily(C.AF_BLUETOOTH)
+pub const af_ccitt = AddrFamily(C.AF_CCITT)
+pub const af_chaos = AddrFamily(C.AF_CHAOS)
+pub const af_cnt = AddrFamily(C.AF_CNT)
+pub const af_coip = AddrFamily(C.AF_COIP)
+pub const af_datakit = AddrFamily(C.AF_DATAKIT)
+pub const af_decnet = AddrFamily(C.AF_DECnet)
+pub const af_divert = AddrFamily(C.AF_DIVERT)
+pub const af_dli = AddrFamily(C.AF_DLI)
+pub const af_e164 = AddrFamily(C.AF_E164)
+pub const af_ecma = AddrFamily(C.AF_ECMA)
+pub const af_hylink = AddrFamily(C.AF_HYLINK)
+pub const af_hyperv = AddrFamily(C.AF_HYPERV)
+pub const af_ieee80211 = AddrFamily(C.AF_IEEE80211)
+pub const af_implink = AddrFamily(C.AF_IMPLINK)
+pub const af_inet6 = AddrFamily(C.AF_INET6)
+pub const af_inet6_sdp = AddrFamily(C.AF_INET6_SDP)
+pub const af_inet = AddrFamily(C.AF_INET)
+pub const af_inet_sdp = AddrFamily(C.AF_INET_SDP)
+pub const af_ipfwlog = AddrFamily(C.AF_IPFWLOG)
+pub const af_ipx = AddrFamily(C.AF_IPX)
+pub const af_isdn = AddrFamily(C.AF_ISDN)
+pub const af_iso = AddrFamily(C.AF_ISO)
+pub const af_lat = AddrFamily(C.AF_LAT)
+pub const af_link = AddrFamily(C.AF_LINK)
+pub const af_local = AddrFamily(C.AF_LOCAL)
+pub const af_max = AddrFamily(C.AF_MAX)
+pub const af_natm = AddrFamily(C.AF_NATM)
+pub const af_netbios = AddrFamily(C.AF_NETBIOS)
+pub const af_netgraph = AddrFamily(C.AF_NETGRAPH)
+pub const af_netlink = AddrFamily(C.AF_NETLINK)
+pub const af_osi = AddrFamily(C.AF_OSI)
+pub const af_pup = AddrFamily(C.AF_PUP)
+pub const af_route = AddrFamily(C.AF_ROUTE)
+pub const af_scluster = AddrFamily(C.AF_SCLUSTER)
+pub const af_sip = AddrFamily(C.AF_SIP)
+pub const af_slow = AddrFamily(C.AF_SLOW)
+pub const af_sna = AddrFamily(C.AF_SNA)
+pub const af_unix = AddrFamily(C.AF_UNIX)
+pub const af_unspec = AddrFamily(C.AF_UNSPEC)
+pub const af_vendor00 = AddrFamily(C.AF_VENDOR00)
+pub const af_vendor01 = AddrFamily(C.AF_VENDOR01)
+pub const af_vendor03 = AddrFamily(C.AF_VENDOR03)
+pub const af_vendor04 = AddrFamily(C.AF_VENDOR04)
+pub const af_vendor05 = AddrFamily(C.AF_VENDOR05)
+pub const af_vendor06 = AddrFamily(C.AF_VENDOR06)
+pub const af_vendor07 = AddrFamily(C.AF_VENDOR07)
+pub const af_vendor08 = AddrFamily(C.AF_VENDOR08)
+pub const af_vendor09 = AddrFamily(C.AF_VENDOR09)
+pub const af_vendor10 = AddrFamily(C.AF_VENDOR10)
+pub const af_vendor11 = AddrFamily(C.AF_VENDOR11)
+pub const af_vendor12 = AddrFamily(C.AF_VENDOR12)
+pub const af_vendor13 = AddrFamily(C.AF_VENDOR13)
+pub const af_vendor14 = AddrFamily(C.AF_VENDOR14)
+pub const af_vendor15 = AddrFamily(C.AF_VENDOR15)
+pub const af_vendor16 = AddrFamily(C.AF_VENDOR16)
+pub const af_vendor17 = AddrFamily(C.AF_VENDOR17)
+pub const af_vendor18 = AddrFamily(C.AF_VENDOR18)
+pub const af_vendor19 = AddrFamily(C.AF_VENDOR19)
+pub const af_vendor20 = AddrFamily(C.AF_VENDOR20)
+pub const af_vendor21 = AddrFamily(C.AF_VENDOR21)
+pub const af_vendor22 = AddrFamily(C.AF_VENDOR22)
+pub const af_vendor23 = AddrFamily(C.AF_VENDOR23)
+pub const af_vendor24 = AddrFamily(C.AF_VENDOR24)
+pub const af_vendor25 = AddrFamily(C.AF_VENDOR25)
+pub const af_vendor26 = AddrFamily(C.AF_VENDOR26)
+pub const af_vendor27 = AddrFamily(C.AF_VENDOR27)
+pub const af_vendor28 = AddrFamily(C.AF_VENDOR28)
+pub const af_vendor29 = AddrFamily(C.AF_VENDOR29)
+pub const af_vendor30 = AddrFamily(C.AF_VENDOR30)
+pub const af_vendor31 = AddrFamily(C.AF_VENDOR31)
+pub const af_vendor32 = AddrFamily(C.AF_VENDOR32)
+pub const af_vendor33 = AddrFamily(C.AF_VENDOR33)
+pub const af_vendor34 = AddrFamily(C.AF_VENDOR34)
+pub const af_vendor35 = AddrFamily(C.AF_VENDOR35)
+pub const af_vendor36 = AddrFamily(C.AF_VENDOR36)
+pub const af_vendor37 = AddrFamily(C.AF_VENDOR37)
+pub const af_vendor38 = AddrFamily(C.AF_VENDOR38)
+pub const af_vendor39 = AddrFamily(C.AF_VENDOR39)
+pub const af_vendor40 = AddrFamily(C.AF_VENDOR40)
+pub const af_vendor41 = AddrFamily(C.AF_VENDOR41)
+pub const af_vendor42 = AddrFamily(C.AF_VENDOR42)
+pub const af_vendor43 = AddrFamily(C.AF_VENDOR43)
+pub const af_vendor44 = AddrFamily(C.AF_VENDOR44)
+pub const af_vendor45 = AddrFamily(C.AF_VENDOR45)
+pub const af_vendor46 = AddrFamily(C.AF_VENDOR46)
+pub const af_vendor47 = AddrFamily(C.AF_VENDOR47)
diff --git a/af_linux.c.v b/af_linux.c.v
index c8d4a36..fb10869 100644
--- a/af_linux.c.v
+++ b/af_linux.c.v
@@ -4,53 +4,53 @@ module netio
 	Address families defined on Linux.
 */
 
-pub const af_alg = AddrFamily(u16(C.AF_ALG))
-pub const af_appletalk = AddrFamily(u16(C.AF_APPLETALK))
-pub const af_ash = AddrFamily(u16(C.AF_ASH))
-pub const af_atmpvc = AddrFamily(u16(C.AF_ATMPVC))
-pub const af_atmsvc = AddrFamily(u16(C.AF_ATMSVC))
-pub const af_ax25 = AddrFamily(u16(C.AF_AX25))
-pub const af_bluetooth = AddrFamily(u16(C.AF_BLUETOOTH))
-pub const af_bridge = AddrFamily(u16(C.AF_BRIDGE))
-pub const af_caif = AddrFamily(u16(C.AF_CAIF))
-pub const af_can = AddrFamily(u16(C.AF_CAN))
-pub const af_decnet = AddrFamily(u16(C.AF_DECnet))
-pub const af_econet = AddrFamily(u16(C.AF_ECONET))
-pub const af_file = AddrFamily(u16(C.AF_FILE))
-pub const af_ib = AddrFamily(u16(C.AF_IB))
-pub const af_ieee802154 = AddrFamily(u16(C.AF_IEEE802154))
-pub const af_inet6 = AddrFamily(u16(C.AF_INET6))
-pub const af_inet = AddrFamily(u16(C.AF_INET))
-pub const af_ipx = AddrFamily(u16(C.AF_IPX))
-pub const af_irda = AddrFamily(u16(C.AF_IRDA))
-pub const af_isdn = AddrFamily(u16(C.AF_ISDN))
-pub const af_iucv = AddrFamily(u16(C.AF_IUCV))
-pub const af_kcm = AddrFamily(u16(C.AF_KCM))
-pub const af_key = AddrFamily(u16(C.AF_KEY))
-pub const af_llc = AddrFamily(u16(C.AF_LLC))
-pub const af_local = AddrFamily(u16(C.AF_LOCAL))
-pub const af_max = AddrFamily(u16(C.AF_MAX))
-pub const af_mctp = AddrFamily(u16(C.AF_MCTP))
-pub const af_mpls = AddrFamily(u16(C.AF_MPLS))
-pub const af_netbeui = AddrFamily(u16(C.AF_NETBEUI))
-pub const af_netlink = AddrFamily(u16(C.AF_NETLINK))
-pub const af_netrom = AddrFamily(u16(C.AF_NETROM))
-pub const af_nfc = AddrFamily(u16(C.AF_NFC))
-pub const af_packet = AddrFamily(u16(C.AF_PACKET))
-pub const af_phonet = AddrFamily(u16(C.AF_PHONET))
-pub const af_pppox = AddrFamily(u16(C.AF_PPPOX))
-pub const af_qipcrtr = AddrFamily(u16(C.AF_QIPCRTR))
-pub const af_rds = AddrFamily(u16(C.AF_RDS))
-pub const af_rose = AddrFamily(u16(C.AF_ROSE))
-pub const af_route = AddrFamily(u16(C.AF_ROUTE))
-pub const af_rxrpc = AddrFamily(u16(C.AF_RXRPC))
-pub const af_security = AddrFamily(u16(C.AF_SECURITY))
-pub const af_smc = AddrFamily(u16(C.AF_SMC))
-pub const af_sna = AddrFamily(u16(C.AF_SNA))
-pub const af_tipc = AddrFamily(u16(C.AF_TIPC))
-pub const af_unix = AddrFamily(u16(C.AF_UNIX))
-pub const af_unspec = AddrFamily(u16(C.AF_UNSPEC))
-pub const af_vsock = AddrFamily(u16(C.AF_VSOCK))
-pub const af_wanpipe = AddrFamily(u16(C.AF_WANPIPE))
-pub const af_x25 = AddrFamily(u16(C.AF_X25))
-pub const af_xdp = AddrFamily(u16(C.AF_XDP))
+pub const af_alg = AddrFamily(C.AF_ALG)
+pub const af_appletalk = AddrFamily(C.AF_APPLETALK)
+pub const af_ash = AddrFamily(C.AF_ASH)
+pub const af_atmpvc = AddrFamily(C.AF_ATMPVC)
+pub const af_atmsvc = AddrFamily(C.AF_ATMSVC)
+pub const af_ax25 = AddrFamily(C.AF_AX25)
+pub const af_bluetooth = AddrFamily(C.AF_BLUETOOTH)
+pub const af_bridge = AddrFamily(C.AF_BRIDGE)
+pub const af_caif = AddrFamily(C.AF_CAIF)
+pub const af_can = AddrFamily(C.AF_CAN)
+pub const af_decnet = AddrFamily(C.AF_DECnet)
+pub const af_econet = AddrFamily(C.AF_ECONET)
+pub const af_file = AddrFamily(C.AF_FILE)
+pub const af_ib = AddrFamily(C.AF_IB)
+pub const af_ieee802154 = AddrFamily(C.AF_IEEE802154)
+pub const af_inet6 = AddrFamily(C.AF_INET6)
+pub const af_inet = AddrFamily(C.AF_INET)
+pub const af_ipx = AddrFamily(C.AF_IPX)
+pub const af_irda = AddrFamily(C.AF_IRDA)
+pub const af_isdn = AddrFamily(C.AF_ISDN)
+pub const af_iucv = AddrFamily(C.AF_IUCV)
+pub const af_kcm = AddrFamily(C.AF_KCM)
+pub const af_key = AddrFamily(C.AF_KEY)
+pub const af_llc = AddrFamily(C.AF_LLC)
+pub const af_local = AddrFamily(C.AF_LOCAL)
+pub const af_max = AddrFamily(C.AF_MAX)
+pub const af_mctp = AddrFamily(C.AF_MCTP)
+pub const af_mpls = AddrFamily(C.AF_MPLS)
+pub const af_netbeui = AddrFamily(C.AF_NETBEUI)
+pub const af_netlink = AddrFamily(C.AF_NETLINK)
+pub const af_netrom = AddrFamily(C.AF_NETROM)
+pub const af_nfc = AddrFamily(C.AF_NFC)
+pub const af_packet = AddrFamily(C.AF_PACKET)
+pub const af_phonet = AddrFamily(C.AF_PHONET)
+pub const af_pppox = AddrFamily(C.AF_PPPOX)
+pub const af_qipcrtr = AddrFamily(C.AF_QIPCRTR)
+pub const af_rds = AddrFamily(C.AF_RDS)
+pub const af_rose = AddrFamily(C.AF_ROSE)
+pub const af_route = AddrFamily(C.AF_ROUTE)
+pub const af_rxrpc = AddrFamily(C.AF_RXRPC)
+pub const af_security = AddrFamily(C.AF_SECURITY)
+pub const af_smc = AddrFamily(C.AF_SMC)
+pub const af_sna = AddrFamily(C.AF_SNA)
+pub const af_tipc = AddrFamily(C.AF_TIPC)
+pub const af_unix = AddrFamily(C.AF_UNIX)
+pub const af_unspec = AddrFamily(C.AF_UNSPEC)
+pub const af_vsock = AddrFamily(C.AF_VSOCK)
+pub const af_wanpipe = AddrFamily(C.AF_WANPIPE)
+pub const af_x25 = AddrFamily(C.AF_X25)
+pub const af_xdp = AddrFamily(C.AF_XDP)
diff --git a/ai_freebsd.c.v b/ai_freebsd.c.v
new file mode 100644
index 0000000..5a2b407
--- /dev/null
+++ b/ai_freebsd.c.v
@@ -0,0 +1,16 @@
+module netio
+
+/*
+	getaddrinfo(3) flags defined on FreeBSD.
+*/
+
+pub const ai_addrconfig = C.AI_ADDRCONFIG
+pub const ai_all = C.AI_ALL
+pub const ai_canonname = C.AI_CANONNAME
+pub const ai_default = C.AI_DEFAULT
+pub const ai_mask = C.AI_MASK
+pub const ai_numerichost = C.AI_NUMERICHOST
+pub const ai_numericserv = C.AI_NUMERICSERV
+pub const ai_passive = C.AI_PASSIVE
+pub const ai_v4mapped = C.AI_V4MAPPED
+pub const ai_v4mapped_cfg = C.AI_V4MAPPED_CFG
diff --git a/ai_linux.c.v b/ai_linux.c.v
new file mode 100644
index 0000000..ed137e3
--- /dev/null
+++ b/ai_linux.c.v
@@ -0,0 +1,13 @@
+module netio
+
+/*
+	getaddrinfo(3) flags defined on Linux.
+*/
+
+pub const ai_addrconfig = C.AI_ADDRCONFIG
+pub const ai_canonname = C.AI_CANONNAME
+pub const ai_all = C.AI_ALL
+pub const ai_v4mapped = C.AI_V4MAPPED
+pub const ai_numericserv = C.AI_NUMERICSERV
+pub const ai_passive = C.AI_PASSIVE
+pub const ai_numerichost = C.AI_NUMERICHOST
diff --git a/examples/host_fqdn.v b/examples/host_fqdn.v
new file mode 100644
index 0000000..25d9345
--- /dev/null
+++ b/examples/host_fqdn.v
@@ -0,0 +1,16 @@
+import netio
+import os
+
+fn main() {
+	// Resolve the fully qualified domain name for host.
+	// This programm is analog for `hostname -f` command.
+	hostname := os.hostname()!
+	ai := netio.translate_addr(node: hostname, flags: netio.ai_canonname)!
+	mut fqdn := ''
+	for a in ai {
+		// Not needed to iterate over all entries, return the first one per getaddrinfo(3).
+		fqdn = a.canonical
+		break
+	}
+	println(fqdn)
+}
diff --git a/main.v b/main.v
deleted file mode 100644
index 2075502..0000000
--- a/main.v
+++ /dev/null
@@ -1,45 +0,0 @@
-// import net
-import netio
-// import time
-// import os
-
-fn main() {
-	listen_addr := netio.SocketAddr.ipv4([u8(127), 0, 0, 1]!, 1081)
-	eprintln(listen_addr.family())
-
-	// eprintln(listen_addr)
-	// mut socket := netio.Socket.new(netio.af_inet, .tcp, 0)!
-	// socket.bind(listen_addr)!
-	// socket.listen(10)!
-	// println('Server started...')
-	// for {
-	// conn_fd := socket.accept()!.fd
-	// mut sock := net.tcp_socket_from_handle_raw(conn_fd)
-	// mut conn := net.TcpConn{
-	// 	sock:          sock
-	// 	handle:        conn_fd
-	// 	read_timeout:  30 * time.second
-	// 	write_timeout: 30 * time.second
-	// }
-	// read := conn.read_line()
-	// println('Data read: ${read}')
-	// net.close(conn_fd)!
-	// }
-	// socket.close()!
-
-	// hostname := dump(os.hostname()!)
-	ai := netio.translate_addr(
-		node:      'localhost'
-		flags:     C.AI_CANONNAME
-		family:    netio.af_inet
-		sock_type: netio.sock_stream
-	)!
-	dump(ai.len)
-	for a in ai {
-		println(a)
-		// println('Protocol: ' + netio.protocol_by_number(a.protocol)!.name)
-		// println('Address: ' + a.addr.str())
-		// println('Canonical name: ' + a.canonical)
-		// println('---')
-	}
-}
diff --git a/main.vv b/main.vv
new file mode 100644
index 0000000..ded0adc
--- /dev/null
+++ b/main.vv
@@ -0,0 +1,45 @@
+import netio
+
+fn main() {
+	ai := netio.translate_addr(
+		service:   '1081'
+		sock_type: netio.sock_stream
+		family:    netio.af_inet6
+		flags:     netio.ai_passive
+	)!
+
+	mut socket := netio.Socket{}
+	mut listen_addr := netio.SocketAddr{}
+
+	for a in ai {
+		socket = netio.Socket.new(a.family, a.sock_type, a.protocol)!
+		socket.set_option(C.IPPROTO_IPV6, C.IPV6_V6ONLY, 0)!
+		socket.bind(a.addr) or {
+			socket.close()!
+			continue
+		}
+		listen_addr = a.addr
+		break
+	}
+
+	defer {
+		socket.close() or { panic(err) }
+	}
+
+	socket.listen(10) or {
+		eprintln('LISTEN: ${err}')
+		exit(1)
+	}
+
+	println('Listening on ${listen_addr}...')
+	for {
+		conn, remote_addr := socket.accept() or {
+			eprintln('ACCEPT: ${err}')
+			exit(1)
+		}
+		eprintln(netio.name(remote_addr)!)
+		eprintln('Remote address: ${remote_addr} | ${remote_addr.family()} | ${remote_addr.size()}')
+		eprintln(remote_addr.u8_array())
+		conn.close()!
+	}
+}
diff --git a/netio.v b/netio.v
index a214a18..17f7974 100644
--- a/netio.v
+++ b/netio.v
@@ -1,19 +1,13 @@
 module netio
 
-import sync
-
-fn init() {
-	netio_protoent_mutex = sync.new_mutex()
-}
-
-fn cleanup() {
-	netio_protoent_mutex.destroy()
-	unsafe { free(netio_protoent_mutex) }
-}
-
 // The socket address family type.
 // See [address_families(7)](https://www.man7.org/linux/man-pages/man7/address_families.7.html).
-pub type AddrFamily = u16
+pub type AddrFamily = int
+
+// The protocol number type.
+// See [protocols(5)](https://man7.org/linux/man-pages/man5/protocols.5.html),
+// and [getprotoent(3)](https://man7.org/linux/man-pages/man3/getprotoent.3.html) for details.
+pub type Protocol = int
 
 // The socket type.
 pub type SocketType = int
diff --git a/protocol/README.md b/protocol/README.md
new file mode 100644
index 0000000..9661bc8
--- /dev/null
+++ b/protocol/README.md
@@ -0,0 +1,7 @@
+# Protocols Database
+
+The **protocol** module provides thread-safe access to the protocols database.
+
+See [protocols(5)](https://www.man7.org/linux/man-pages/man5/protocols.5.html)
+and [getprotoent(3)](https://man7.org/linux/man-pages/man3/getprotoent.3.html)
+for details.
diff --git a/protocol.c.v b/protocol/protocol.c.v
similarity index 75%
rename from protocol.c.v
rename to protocol/protocol.c.v
index 6f37309..6c7d16a 100644
--- a/protocol.c.v
+++ b/protocol/protocol.c.v
@@ -1,11 +1,20 @@
 @[has_globals]
-module netio
+module protocol
 
 import os
 import sync
 
 // Mutex for accessing to protocol entries via getprotoent(3).
-__global netio_protoent_mutex &sync.Mutex
+__global netio_proto_mutex &sync.Mutex
+
+fn init() {
+	netio_proto_mutex = sync.new_mutex()
+}
+
+fn cleanup() {
+	netio_proto_mutex.destroy()
+	unsafe { free(netio_proto_mutex) }
+}
 
 struct C.protoent {
 	p_name    &char
@@ -19,16 +28,6 @@ fn C.getprotobynumber(i32) &C.protoent
 fn C.setprotoent(i32)
 fn C.endprotoent()
 
-// The protocol number type.
-// See [protocols(5)](https://man7.org/linux/man-pages/man5/protocols.5.html),
-// and [getprotoent(3)](https://man7.org/linux/man-pages/man3/getprotoent.3.html) for details.
-pub type Protocol = int
-
-// entry returns the protocol entry from database.
-pub fn (p Protocol) entry() !ProtocolEntry {
-	return protocol_by_number(p)!
-}
-
 pub struct ProtocolEntry {
 pub:
 	name    string   // The official name of protocol.
@@ -60,11 +59,11 @@ fn make_proto(ent C.protoent) ProtocolEntry {
 
 // protocols returns all protocol entries from database in arbitrary order.
 pub fn protocols() []ProtocolEntry {
-	netio_protoent_mutex.@lock()
+	netio_proto_mutex.@lock()
 	C.setprotoent(1)
 	defer {
 		C.endprotoent()
-		netio_protoent_mutex.unlock()
+		netio_proto_mutex.unlock()
 	}
 	mut protos := []ProtocolEntry{}
 	for {
@@ -79,9 +78,9 @@ pub fn protocols() []ProtocolEntry {
 
 // protocol_by_name returns the protocol entry by name e.g. 'tcp', 'icmp'.
 pub fn protocol_by_name(name string) !ProtocolEntry {
-	netio_protoent_mutex.@lock()
+	netio_proto_mutex.@lock()
 	defer {
-		netio_protoent_mutex.unlock()
+		netio_proto_mutex.unlock()
 	}
 	proto := C.getprotobyname(&char(name.str))
 	if isnil(proto) {
@@ -92,9 +91,9 @@ pub fn protocol_by_name(name string) !ProtocolEntry {
 
 // protocol_by_number returns the protocol entry by protocol number.
 pub fn protocol_by_number(num int) !ProtocolEntry {
-	netio_protoent_mutex.@lock()
+	netio_proto_mutex.@lock()
 	defer {
-		netio_protoent_mutex.unlock()
+		netio_proto_mutex.unlock()
 	}
 	proto := C.getprotobynumber(num)
 	if isnil(proto) {
diff --git a/sock_default.c.v b/sock_default.c.v
index c4f2f56..7f70e4e 100644
--- a/sock_default.c.v
+++ b/sock_default.c.v
@@ -8,4 +8,3 @@ pub const sock_stream = SocketType(C.SOCK_STREAM)
 pub const sock_dgram = SocketType(C.SOCK_DGRAM)
 pub const sock_seqpacket = SocketType(C.SOCK_SEQPACKET)
 pub const sock_raw = SocketType(C.SOCK_RAW)
-pub const sock_rdm = SocketType(C.SOCK_RDM)
diff --git a/sock_freebsd.c.v b/sock_freebsd.c.v
new file mode 100644
index 0000000..df26918
--- /dev/null
+++ b/sock_freebsd.c.v
@@ -0,0 +1,13 @@
+module netio
+
+/*
+	Socket types defined on FreeBSD.
+*/
+
+pub const sock_stream = SocketType(C.SOCK_STREAM)
+pub const sock_dgram = SocketType(C.SOCK_DGRAM)
+pub const sock_raw = SocketType(C.SOCK_RAW)
+pub const sock_seqpacket = SocketType(C.SOCK_SEQPACKET)
+pub const sock_cloexec = SocketType(C.SOCK_CLOEXEC)
+pub const sock_clofork = SocketType(C.SOCK_CLOFORK)
+pub const sock_nonblock = SocketType(C.SOCK_NONBLOCK)
diff --git a/socket.c.v b/socket.c.v
index 4b559db..7b46050 100644
--- a/socket.c.v
+++ b/socket.c.v
@@ -3,20 +3,23 @@ module netio
 import os
 
 #include <sys/socket.h>
+#include <netinet/in.h>
 
 fn C.socket(i32, i32, i32) i32
 fn C.bind(i32, voidptr, i32) i32
 fn C.connect(i32, voidptr, i32) i32
 fn C.listen(i32, i32) i32
-fn C.accept(i32, voidptr, i32) i32
+fn C.accept(i32, voidptr, voidptr) i32
 fn C.shutdown(i32, i32) i32
 fn C.close(i32) i32
 fn C.setsockopt(i32, i32, i32, voidptr, i32) i32
 fn C.getsockopt(i32, i32, i32, voidptr, i32) i32
 
+struct C.sockaddr_storage {}
+
 pub struct Socket {
 pub:
-	fd int
+	fd int = -1
 }
 
 // Socket.new creates new socket.
@@ -32,6 +35,11 @@ pub fn Socket.new(domain AddrFamily, typ SocketType, protocol Protocol) !Socket
 	}
 }
 
+// typeof reports the actual socket type.
+pub fn (s Socket) typeof() !SocketType {
+	return s.get_option_int(C.SOL_SOCKET, C.SO_TYPE)!
+}
+
 // Socket shutdown modes. See [shutdown(3p)](https://man7.org/linux/man-pages/man3/shutdown.3p.html) for details.
 pub enum Shutdown {
 	read           = C.SHUT_RD
@@ -61,21 +69,38 @@ pub fn (s Socket) listen(backlog int) ! {
 }
 
 // accept accepts a new connection on a socket.
-pub fn (s Socket) accept() !Socket {
-	new_fd := C.accept(s.fd, 0, 0)
-	if new_fd == -1 {
+// The return values are the new socket connected to remote and the remote socket address.
+pub fn (s Socket) accept() !(Socket, SocketAddr) {
+	mut sock_addr_storage := &C.sockaddr_storage{}
+	mut sock_addr_len := sizeof(C.sockaddr_storage)
+	fd := C.accept(s.fd, sock_addr_storage, &sock_addr_len)
+	if fd == -1 {
 		return os.last_error()
 	}
-	return Socket{
-		fd: new_fd
+	sock := Socket{
+		fd: fd
 	}
+	sock_addr := unsafe {
+		SocketAddr.from_ptr(sock_addr_storage, sock_addr_len)!
+	}
+	return sock, sock_addr
 }
 
 // set_option sets the socket option.
-pub fn (s Socket) set_option(level SocketLevel, option SocketOption, value int) ! {}
+pub fn (s Socket) set_option(level SocketLevel, option SocketOption, value int) ! {
+	if C.setsockopt(s.fd, i32(level), i32(option), i32(value), sizeof(value)) == -1 {
+		return os.last_error()
+	}
+}
 
-// get_option gets the socket option.
-pub fn (s Socket) get_option(level SocketLevel, option SocketOption) ! {}
+// get_option gets the socket option as int.
+pub fn (s Socket) get_option_int(level SocketLevel, option SocketOption) !int {
+	mut result := 0
+	if C.getsockopt(s.fd, i32(level), i32(option), &result, sizeof(result)) == -1 {
+		return os.last_error()
+	}
+	return result
+}
 
 // shutdown shut downs socket send and receive operations.
 pub fn (s Socket) shutdown(how Shutdown) ! {
diff --git a/socket_addr.c.v b/socket_addr.c.v
index 17f8a0a..131cf5d 100644
--- a/socket_addr.c.v
+++ b/socket_addr.c.v
@@ -1,6 +1,5 @@
 module netio
 
-import dlmalloc
 import encoding.binary
 import os
 
@@ -18,9 +17,10 @@ mut:
 	ai_next      voidptr
 }
 
-fn C.getaddrinfo(node &char, srvc &char, hints &C.addrinfo, res &&C.addrinfo) int
-fn C.freeaddrinfo(info &C.addrinfo)
+fn C.getaddrinfo(&char, &char, &C.addrinfo, &&C.addrinfo) i32
+fn C.freeaddrinfo(&C.addrinfo)
 
+// max_unix_path_size value is used to pad the sockaddr_un struct.
 const max_unix_path_size = $if linux {
 	108
 } $else $if windows {
@@ -51,16 +51,16 @@ pub:
 	flags     int
 }
 
-// translate_addr translates the network address.
-// See also [getaddrinfo(3)](https://man7.org/linux/man-pages/man3/getaddrinfo.3.html).
+// translate_addr translates the network address. This is a low-level wrapper around
+// the [getaddrinfo(3)](https://man7.org/linux/man-pages/man3/getaddrinfo.3.html) C API.
 // Example:
 // ```v
 // import os
 // import netio
 //
 // // Resolve the host FQND
-// addrs := netio.translate_addr(node: os.hostname()!, flags: C.AI_CANONNAME)!
-// for addr in addrs {
+// addr_info := netio.translate_addr(node: os.hostname()!, flags: ai_canonname)!
+// for addr in addr_info {
 // 	println(addr.canonical)
 // }
 // ```
@@ -107,11 +107,10 @@ pub fn translate_addr(hints TranslateAddrHints) ![]AddrInfo {
 }
 
 // SocketAddr.ipv4 creates new AF_INET socket address.
-// addr must be in big-endian byte order.
+// addr must be set in network (big-endian) byte order.
 pub fn SocketAddr.ipv4(addr [4]u8, port u16) SocketAddr {
-	mut sock_addr := unsafe { SocketAddr.empty(af_inet, 16) }
+	mut sock_addr := unsafe { SocketAddr.new(af_inet, 16) }
 	unsafe {
-		sock_addr.push(binary.little_endian_get_u16(u16(af_inet))) or {}
 		sock_addr.push(binary.big_endian_get_u16(port)) or {}
 		sock_addr.push(addr[..]) or {}
 	}
@@ -119,9 +118,10 @@ pub fn SocketAddr.ipv4(addr [4]u8, port u16) SocketAddr {
 }
 
 // SocketAddr.ipv6 creates new AF_INET6 socket address.
-// addr must be in big-endian byte order.
+// addr must be set in network (big-endian) byte order.
+// Use if_nametoindex(3) to get an integer scope_id from its string representation.
 pub fn SocketAddr.ipv6(addr [16]u8, port u16, flow_info u32, scope_id u32) SocketAddr {
-	mut sock_addr := unsafe { SocketAddr.empty(af_inet6, 28) }
+	mut sock_addr := unsafe { SocketAddr.new(af_inet6, 28) }
 	unsafe {
 		sock_addr.push(binary.big_endian_get_u16(port)) or {}
 		sock_addr.push(binary.big_endian_get_u32(flow_info)) or {}
@@ -132,22 +132,25 @@ pub fn SocketAddr.ipv6(addr [16]u8, port u16, flow_info u32, scope_id u32) Socke
 }
 
 // SocketAddr.unix creates new AF_UNIX socket address.
-pub fn SocketAddr.unix(path string) SocketAddr {
-	mut sock_addr := unsafe { SocketAddr.empty(af_unix, usize(max_unix_path_size) + 2) }
+pub fn SocketAddr.unix(path string) !SocketAddr {
+	if path.len > max_unix_path_size {
+		return error('Too long path to socket')
+	}
+	mut sock_addr := unsafe { SocketAddr.new(af_unix, usize(max_unix_path_size) + 2) }
 	unsafe {
 		sock_addr.push(path.bytes()) or {}
 	}
 	return sock_addr
 }
 
-// SocketAddr.empty creates new instance of SocketAddr with specified address family and size.
+// SocketAddr.new creates new instance of SocketAddr with specified address family and size.
 //
-// Note: This function only allocates memory (zero filled) for the address, but **does not**
-// initialize the address itself, you need to do that manually. The benefit is that you can
-// create the any type of address.
+// This function allocates memory (zero filled) for the address, but does not initialize
+// the address itself, you need to do that manually. The benefit is that you can create the
+// any kind of socket address.
 //
-// Note: This function sets the address family for you.
-// This field is always first and have 2-byte size (`u16` type).
+// Note: This function sets the address family struct field for you, it is always first
+// and 2-byte size (`u16` type).
 //
 // SocketAddr is a "constructor" for
 // [sockaddr(3type)](https://www.man7.org/linux/man-pages/man3/sockaddr.3type.html) objects.
@@ -158,15 +161,15 @@ pub fn SocketAddr.unix(path string) SocketAddr {
 // A mistake while creating an address will crash your application. So this function is
 // marked as `unsafe`.
 //
-// The example below creates a `sockaddr_in` struct describing the loopback IPv4-address
+// The example below creates a sockaddr_in struct describing the loopback IPv4-address
 // 127.0.0.1 with port number 1080. Note the comment in the example. This is a fragment
 // of [sockaddr_in(3type)](https://www.man7.org/linux/man-pages/man3/sockaddr.3type.html)
 // manual page, which shows the target C struct. Summing the field sizes yields 8
 // bytes, but we need to allocate 16 bytes according to the <netinet/in.h>.
 // Data must be padded to sockaddr struct size which is 16 bytes. Each field is then
-// written in turn, from top to bottom. Keep in mind that address family field (sin_family
-// in this case) are already written. According to the manual page, the address and port
-// are written using the network (big endian) byte order.
+// written in turn, from top to bottom. Keep in mind that two-byte address family field
+// (sin_family in this case) is already written. According to the manual page, the
+// address and port are written using the network (big endian) byte order.
 //
 // Example:
 // ```v
@@ -186,15 +189,15 @@ pub fn SocketAddr.unix(path string) SocketAddr {
 // // typedef uint32_t in_addr_t;
 // // typedef uint16_t in_port_t;
 //
-// mut sa := unsafe { netio.SocketAddr.empty(u16(C.AF_INET), 16) }
+// mut sa := unsafe { netio.SocketAddr.new(netio.af_inet, 16) }
 // unsafe {
 // 	sa.push(binary.big_endian_get_u16(u16(1080)))!
 // 	sa.push([u8(127), 0, 0, 1])!
 // }
 // ```
 @[unsafe]
-pub fn SocketAddr.empty(af AddrFamily, size isize) SocketAddr {
-	ptr := unsafe { dlmalloc.calloc(usize(size)) }
+pub fn SocketAddr.new(af AddrFamily, size isize) SocketAddr {
+	ptr := unsafe { vcalloc(usize(size)) }
 	mut sock_addr := SocketAddr{
 		data: ptr
 		len:  int(size)
@@ -212,7 +215,7 @@ pub fn SocketAddr.empty(af AddrFamily, size isize) SocketAddr {
 // SocketAddr.from_ptr creates new socket address by copying data from specified pointer.
 @[unsafe]
 pub fn SocketAddr.from_ptr(ptr voidptr, size isize) !SocketAddr {
-	data := unsafe { dlmalloc.calloc(usize(size)) }
+	data := unsafe { vcalloc(usize(size)) }
 	unsafe {
 		vmemcpy(data, ptr, size)
 	}
@@ -222,7 +225,7 @@ pub fn SocketAddr.from_ptr(ptr voidptr, size isize) !SocketAddr {
 	}
 }
 
-struct SocketAddr {
+pub struct SocketAddr {
 mut:
 	data &u8 = unsafe { nil }
 	len  int
@@ -231,7 +234,7 @@ mut:
 
 // family returns the socket address family.
 pub fn (a SocketAddr) family() AddrFamily {
-	mut f := u16(-1)
+	mut f := AddrFamily(0)
 	unsafe { vmemcpy(&f, a.data, isize(2)) }
 	return f
 }
@@ -265,9 +268,16 @@ pub fn (a SocketAddr) size() u32 {
 	return u32(a.len)
 }
 
+// u8_array returns the socket address data as is as bytes array.
+pub fn (a SocketAddr) u8_array() []u8 {
+	mut addr := []u8{len: int(a.size()), init: 0}
+	unsafe { vmemcpy(addr.data, a.ptr(), a.size()) }
+	return addr
+}
+
+// str returns the string representation of socket address.
 pub fn (a SocketAddr) str() string {
-	family := a.family()
-	match family {
+	match a.family() {
 		af_inet {
 			mut addr := [4]u8{}
 			mut port := [2]u8{}
@@ -276,7 +286,12 @@ pub fn (a SocketAddr) str() string {
 				vmemcpy(addr, a.ptr() + 4, 4)
 			}
 			port_int := binary.big_endian_u16_fixed(port)
-			return '${addr[0]}.${addr[1]}.${addr[2]}.${addr[3]}:${port_int}'
+			// vfmt off
+			return addr[0].str() + '.'
+				+ addr[1].str() + '.'
+				+ addr[2].str() + '.'
+				+ addr[3].str() + ':' + port_int.str()
+			// vfmt on
 		}
 		af_inet6 {
 			mut addr := [16]u8{}
@@ -293,7 +308,7 @@ pub fn (a SocketAddr) str() string {
 				}
 			}
 			port_int := binary.big_endian_u16_fixed(port)
-			return res + ':' + port_int.str()
+			return '[' + res + ']:' + port_int.str()
 		}
 		af_unix {
 			mut path := [max_unix_path_size]u8{}
diff --git a/socket_addr_test.v b/socket_addr_test.v
new file mode 100644
index 0000000..2df6ae0
--- /dev/null
+++ b/socket_addr_test.v
@@ -0,0 +1,17 @@
+import netio
+
+fn test_socket_addr_ipv4() {
+	addr := netio.SocketAddr.ipv4([u8(127), 0, 0, 1]!, 1080)
+	assert addr.str() == '127.0.0.1:1080'
+}
+
+fn test_socket_addr_ipv6() {
+	addr := netio.SocketAddr.ipv6([u8(0xfd), 0xf1, 0x72, 0xd1, 0x00, 0x33, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x02, 0x47]!, 25535, 0, 0)
+	assert addr.str() == '[fdf1:72d1:0033:0000:0000:0000:0000:0247]:25535'
+}
+
+fn test_socket_addr_unix() {
+	addr := netio.SocketAddr.unix('/run/app.sock')!
+	assert addr.str() == '/run/app.sock'
+}
diff --git a/translate.c.v b/translate.c.v
new file mode 100644
index 0000000..73aa98d
--- /dev/null
+++ b/translate.c.v
@@ -0,0 +1,14 @@
+module netio
+
+import os
+
+fn C.getnameinfo(voidptr, i32, &char, i32, &char, i32, i32) i32
+
+pub fn name(sa SocketAddr) !(string, string) {
+	mut addr := []u8{len: 16}
+	mut srv := []u8{len: 2}
+	if C.getnameinfo(sa.ptr(), sa.size(), addr.data, 16, srv.data, 2, C.NI_NUMERICHOST) == -1 {
+		return os.last_error()
+	}
+	return addr.str(), ''
+}