accept(Socket :: socket()) -> {ok, socket()} | {error, any()}.

accept(Socket :: socket(), Timeout :: pos_integer() | infinity) -> {ok, socket()} | {error, any()}.

active_once(Socket :: socket()) -> ok | {error, any()}.

begin_inet_async(Socket :: socket()) -> any().

close(Socket :: socket()) -> ok.

connect(Protocol :: protocol(), Address :: address(), Port :: pos_integer()) ->
           {ok, socket()} | {error, any()}.

connect(Protocol :: protocol(), Address :: address(), Port :: pos_integer(), Options :: list()) ->
           {ok, socket()} | {error, any()}.

connect(Protocol :: protocol(),
        Address :: address(),
        Port :: pos_integer(),
        Options :: list(),
        Time :: non_neg_integer() | infinity) ->
           {ok, socket()} | {error, any()}.

controlling_process(Socket :: socket(), NewOwner :: pid()) -> ok | {error, any()}.

extract_port_from_socket(Socket :: socket()) -> port().

get_proto(Socket :: any()) -> tcp | ssl.

handle_inet_async(Message :: {inet_async, socket(), any(), {ok, socket()}}) -> {ok, socket()}.

handle_inet_async(ListenSocket :: socket(), ClientSocket :: socket()) -> {ok, socket()}.

handle_inet_async(ListenSocket :: socket(), ClientSocket :: socket(), Options :: list()) ->
                     {ok, socket()}.

listen(Protocol :: protocol(), Port :: pos_integer()) -> {ok, socket()} | {error, any()}.

listen(Protocol :: protocol(), Port :: pos_integer(), Options :: list()) ->
          {ok, socket()} | {error, any()}.

peername(Socket :: socket()) -> {ok, {inet:ip_address(), non_neg_integer()}} | {error, any()}.

recv(Socket :: socket(), Length :: non_neg_integer()) -> {ok, any()} | {error, any()}.

recv(Socket :: socket(), Length :: non_neg_integer(), Timeout :: non_neg_integer() | infinity) ->
        {ok, any()} | {error, any()}.

send(Socket :: socket(), Data :: binary() | string() | iolist()) -> ok | {error, any()}.

setopts(Socket :: socket(), Options :: list()) -> ok | {error, any()}.

shutdown(Socket :: socket(), How :: read | write | read_write) -> ok | {error, any()}.

to_ssl_client(Socket :: socket()) -> {ok, ssl:sslsocket()} | {error, already_ssl}.

to_ssl_client(Socket :: socket(), Options :: list()) ->
                 {ok, ssl:sslsocket()} | {error, already_ssl}.

to_ssl_client(Socket :: socket(), Options :: list(), Timeout :: non_neg_integer() | infinity) ->
                 {ok, ssl:sslsocket()} | {error, already_ssl}.

to_ssl_server(Socket :: socket()) -> {ok, ssl:sslsocket()} | {error, any()}.

to_ssl_server(Socket :: socket(), Options :: list()) -> {ok, ssl:sslsocket()} | {error, any()}.

to_ssl_server(Socket :: socket(), Options :: list(), Timeout :: non_neg_integer() | infinity) ->
                 {ok, ssl:sslsocket()} | {error, any()}.

type(Socket :: socket()) -> protocol().