In Files
- socket/ancdata.c
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Socket::Option
Socket::Option represents a socket option used by BasicSocket#getsockopt and BasicSocket#setsockopt. A socket option contains the socket family, protocol level, option name optname and option value data.
Public Class Methods
Socket::Option.bool(family, level, optname, bool) => sockopt
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Creates a new Socket::Option object which contains boolean as data. Actually 0 or 1 as int is used.
p Socket::Option.bool(:INET, :SOCKET, :KEEPALIVE, true) #=> #<Socket::Option: INET SOCKET KEEPALIVE 1> p Socket::Option.bool(:INET, :SOCKET, :KEEPALIVE, false) #=> #<Socket::Option: AF_INET SOCKET KEEPALIVE 0>
static VALUE
sockopt_s_bool(VALUE klass, VALUE vfamily, VALUE vlevel, VALUE voptname, VALUE vbool)
{
int family = rsock_family_arg(vfamily);
int level = rsock_level_arg(family, vlevel);
int optname = rsock_optname_arg(family, level, voptname);
int i = RTEST(vbool) ? 1 : 0;
return rsock_sockopt_new(family, level, optname, rb_str_new((char*)&i, sizeof(i)));
}
Socket::Option.int(family, level, optname, integer) => sockopt
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Creates a new Socket::Option object which contains an int as data.
The size and endian is dependent on the platform.
p Socket::Option.int(:INET, :SOCKET, :KEEPALIVE, 1) #=> #<Socket::Option: INET SOCKET KEEPALIVE 1>
static VALUE
sockopt_s_int(VALUE klass, VALUE vfamily, VALUE vlevel, VALUE voptname, VALUE vint)
{
int family = rsock_family_arg(vfamily);
int level = rsock_level_arg(family, vlevel);
int optname = rsock_optname_arg(family, level, voptname);
int i = NUM2INT(vint);
return rsock_sockopt_new(family, level, optname, rb_str_new((char*)&i, sizeof(i)));
}
Socket::Option.linger(onoff, secs) => sockopt
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Creates a new Socket::Option object for SOL_SOCKET/SO_LINGER.
onoff should be an integer or a boolean.
secs should be the number of seconds.
p Socket::Option.linger(true, 10) #=> #<Socket::Option: UNSPEC SOCKET LINGER on 10sec>
static VALUE
sockopt_s_linger(VALUE klass, VALUE vonoff, VALUE vsecs)
{
VALUE tmp;
struct linger l;
memset(&l, 0, sizeof(l));
if (!NIL_P(tmp = rb_check_to_integer(vonoff, "to_int")))
l.l_onoff = NUM2INT(tmp);
else
l.l_onoff = RTEST(vonoff) ? 1 : 0;
l.l_linger = NUM2INT(vsecs);
return rsock_sockopt_new(AF_UNSPEC, SOL_SOCKET, SO_LINGER, rb_str_new((char*)&l, sizeof(l)));
}
Socket::Option.new(family, level, optname, data) => sockopt
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Returns a new Socket::Option object.
sockopt = Socket::Option.new(:INET, :SOCKET, :KEEPALIVE, [1].pack("i")) p sockopt #=> #<Socket::Option: INET SOCKET KEEPALIVE 1>
static VALUE
sockopt_initialize(VALUE self, VALUE vfamily, VALUE vlevel, VALUE voptname, VALUE data)
{
int family = rsock_family_arg(vfamily);
int level = rsock_level_arg(family, vlevel);
int optname = rsock_optname_arg(family, level, voptname);
StringValue(data);
rb_ivar_set(self, rb_intern("family"), INT2NUM(family));
rb_ivar_set(self, rb_intern("level"), INT2NUM(level));
rb_ivar_set(self, rb_intern("optname"), INT2NUM(optname));
rb_ivar_set(self, rb_intern("data"), data);
return self;
}
Public Instance Methods
bool => true or false
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Returns the data in sockopt as an boolean value.
sockopt = Socket::Option.int(:INET, :SOCKET, :KEEPALIVE, 1) p sockopt.bool => true
static VALUE
sockopt_bool(VALUE self)
{
int i;
VALUE data = sockopt_data(self);
StringValue(data);
if (RSTRING_LEN(data) != sizeof(int))
rb_raise(rb_eTypeError, "size differ. expected as sizeof(int)=%d but %ld",
(int)sizeof(int), (long)RSTRING_LEN(data));
memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
return i == 0 ? Qfalse : Qtrue;
}
data => string
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returns the socket option data as a string.
p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).data #=> "\x01\x00\x00\x00"
static VALUE
sockopt_data(VALUE self)
{
VALUE v = rb_attr_get(self, rb_intern("data"));
StringValue(v);
return v;
}
family => integer
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returns the socket family as an integer.
p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).family #=> 10
static VALUE
sockopt_family_m(VALUE self)
{
return rb_attr_get(self, rb_intern("family"));
}
inspect => string
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Returns a string which shows sockopt in human-readable form.
p Socket::Option.new(:INET, :SOCKET, :KEEPALIVE, [1].pack("i")).inspect #=> "#<Socket::Option: INET SOCKET KEEPALIVE 1>"
static VALUE
sockopt_inspect(VALUE self)
{
int family = NUM2INT(sockopt_family_m(self));
int level = NUM2INT(sockopt_level_m(self));
int optname = NUM2INT(sockopt_optname_m(self));
VALUE data = sockopt_data(self);
VALUE v, ret;
ID family_id, level_id, optname_id;
int inspected;
StringValue(data);
ret = rb_sprintf("#<%s:", rb_obj_classname(self));
family_id = rsock_intern_family_noprefix(family);
if (family_id)
rb_str_catf(ret, " %s", rb_id2name(family_id));
else
rb_str_catf(ret, " family:%d", family);
if (level == SOL_SOCKET) {
rb_str_cat2(ret, " SOCKET");
optname_id = rsock_intern_so_optname(optname);
if (optname_id)
rb_str_catf(ret, " %s", rb_id2name(optname_id));
else
rb_str_catf(ret, " optname:%d", optname);
}
#ifdef HAVE_SYS_UN_H
else if (family == AF_UNIX) {
rb_str_catf(ret, " level:%d", level);
optname_id = rsock_intern_local_optname(optname);
if (optname_id)
rb_str_catf(ret, " %s", rb_id2name(optname_id));
else
rb_str_catf(ret, " optname:%d", optname);
}
#endif
else if (IS_IP_FAMILY(family)) {
level_id = rsock_intern_iplevel(level);
if (level_id)
rb_str_catf(ret, " %s", rb_id2name(level_id));
else
rb_str_catf(ret, " level:%d", level);
v = optname_to_sym(level, optname);
if (SYMBOL_P(v))
rb_str_catf(ret, " %s", rb_id2name(SYM2ID(v)));
else
rb_str_catf(ret, " optname:%d", optname);
}
else {
rb_str_catf(ret, " level:%d", level);
rb_str_catf(ret, " optname:%d", optname);
}
inspected = 0;
if (level == SOL_SOCKET)
family = AF_UNSPEC;
switch (family) {
case AF_UNSPEC:
switch (level) {
case SOL_SOCKET:
switch (optname) {
# if defined(SO_DEBUG) /* POSIX */
case SO_DEBUG: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_ERROR) /* POSIX */
case SO_ERROR: inspected = inspect_errno(level, optname, data, ret); break;
# endif
# if defined(SO_TYPE) /* POSIX */
case SO_TYPE: inspected = inspect_socktype(level, optname, data, ret); break;
# endif
# if defined(SO_ACCEPTCONN) /* POSIX */
case SO_ACCEPTCONN: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_BROADCAST) /* POSIX */
case SO_BROADCAST: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_REUSEADDR) /* POSIX */
case SO_REUSEADDR: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_KEEPALIVE) /* POSIX */
case SO_KEEPALIVE: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_OOBINLINE) /* POSIX */
case SO_OOBINLINE: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_SNDBUF) /* POSIX */
case SO_SNDBUF: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_RCVBUF) /* POSIX */
case SO_RCVBUF: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_DONTROUTE) /* POSIX */
case SO_DONTROUTE: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_RCVLOWAT) /* POSIX */
case SO_RCVLOWAT: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_SNDLOWAT) /* POSIX */
case SO_SNDLOWAT: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_LINGER) /* POSIX */
case SO_LINGER: inspected = inspect_linger(level, optname, data, ret); break;
# endif
# if defined(SO_RCVTIMEO) /* POSIX */
case SO_RCVTIMEO: inspected = inspect_timeval_as_interval(level, optname, data, ret); break;
# endif
# if defined(SO_SNDTIMEO) /* POSIX */
case SO_SNDTIMEO: inspected = inspect_timeval_as_interval(level, optname, data, ret); break;
# endif
# if defined(SO_PEERCRED) /* GNU/Linux, OpenBSD */
case SO_PEERCRED: inspected = inspect_peercred(level, optname, data, ret); break;
# endif
}
break;
}
break;
case AF_INET:
#ifdef INET6
case AF_INET6:
#endif
switch (level) {
# if defined(IPPROTO_IP)
case IPPROTO_IP:
switch (optname) {
# if defined(IP_MULTICAST_IF) && defined(HAVE_TYPE_STRUCT_IP_MREQN) /* 4.4BSD, GNU/Linux */
case IP_MULTICAST_IF: inspected = inspect_ipv4_multicast_if(level, optname, data, ret); break;
# endif
# if defined(IP_ADD_MEMBERSHIP) /* 4.4BSD, GNU/Linux */
case IP_ADD_MEMBERSHIP: inspected = inspect_ipv4_add_drop_membership(level, optname, data, ret); break;
# endif
# if defined(IP_DROP_MEMBERSHIP) /* 4.4BSD, GNU/Linux */
case IP_DROP_MEMBERSHIP: inspected = inspect_ipv4_add_drop_membership(level, optname, data, ret); break;
# endif
}
break;
# endif
# if defined(IPPROTO_IPV6)
case IPPROTO_IPV6:
switch (optname) {
# if defined(IPV6_MULTICAST_HOPS) /* POSIX */
case IPV6_MULTICAST_HOPS: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(IPV6_MULTICAST_IF) /* POSIX */
case IPV6_MULTICAST_IF: inspected = inspect_ipv6_multicast_if(level, optname, data, ret); break;
# endif
# if defined(IPV6_MULTICAST_LOOP) /* POSIX */
case IPV6_MULTICAST_LOOP: inspected = inspect_uint(level, optname, data, ret); break;
# endif
# if defined(IPV6_JOIN_GROUP) /* POSIX */
case IPV6_JOIN_GROUP: inspected = inspect_ipv6_mreq(level, optname, data, ret); break;
# endif
# if defined(IPV6_LEAVE_GROUP) /* POSIX */
case IPV6_LEAVE_GROUP: inspected = inspect_ipv6_mreq(level, optname, data, ret); break;
# endif
# if defined(IPV6_UNICAST_HOPS) /* POSIX */
case IPV6_UNICAST_HOPS: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(IPV6_V6ONLY) /* POSIX */
case IPV6_V6ONLY: inspected = inspect_int(level, optname, data, ret); break;
# endif
}
break;
# endif
# if defined(IPPROTO_TCP)
case IPPROTO_TCP:
switch (optname) {
# if defined(TCP_NODELAY) /* POSIX */
case TCP_NODELAY: inspected = inspect_int(level, optname, data, ret); break;
# endif
}
break;
# endif
}
break;
#ifdef HAVE_SYS_UN_H
case AF_UNIX:
switch (level) {
case 0:
switch (optname) {
# if defined(LOCAL_PEERCRED)
case LOCAL_PEERCRED: inspected = inspect_local_peercred(level, optname, data, ret); break;
# endif
}
break;
}
break;
#endif
}
if (!inspected) {
rb_str_cat2(ret, " ");
rb_str_append(ret, rb_str_dump(data));
}
rb_str_cat2(ret, ">");
return ret;
}
int => integer
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Returns the data in sockopt as an int.
The size and endian is dependent on the platform.
sockopt = Socket::Option.int(:INET, :SOCKET, :KEEPALIVE, 1) p sockopt.int => 1
static VALUE
sockopt_int(VALUE self)
{
int i;
VALUE data = sockopt_data(self);
StringValue(data);
if (RSTRING_LEN(data) != sizeof(int))
rb_raise(rb_eTypeError, "size differ. expected as sizeof(int)=%d but %ld",
(int)sizeof(int), (long)RSTRING_LEN(data));
memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
return INT2NUM(i);
}
level => integer
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returns the socket level as an integer.
p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).level #=> 41
static VALUE
sockopt_level_m(VALUE self)
{
return INT2NUM(sockopt_level(self));
}
linger => [bool, seconds]
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Returns the linger data in sockopt as a pair of boolean and integer.
sockopt = Socket::Option.linger(true, 10) p sockopt.linger => [true, 10]
static VALUE
sockopt_linger(VALUE self)
{
int level = sockopt_level(self);
int optname = sockopt_optname(self);
VALUE data = sockopt_data(self);
struct linger l;
VALUE vonoff, vsecs;
if (level != SOL_SOCKET || optname != SO_LINGER)
rb_raise(rb_eTypeError, "linger socket option expected");
if (RSTRING_LEN(data) != sizeof(l))
rb_raise(rb_eTypeError, "size differ. expected as sizeof(struct linger)=%d but %ld",
(int)sizeof(struct linger), (long)RSTRING_LEN(data));
memcpy((char*)&l, RSTRING_PTR(data), sizeof(struct linger));
switch (l.l_onoff) {
case 0: vonoff = Qfalse; break;
case 1: vonoff = Qtrue; break;
default: vonoff = INT2NUM(l.l_onoff); break;
}
vsecs = INT2NUM(l.l_linger);
return rb_assoc_new(vonoff, vsecs);
}
optname => integer
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returns the socket option name as an integer.
p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).optname #=> 2
static VALUE
sockopt_optname_m(VALUE self)
{
return INT2NUM(sockopt_optname(self));
}
data => string
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returns the socket option data as a string.
p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).data #=> "\x01\x00\x00\x00"
static VALUE
sockopt_data(VALUE self)
{
VALUE v = rb_attr_get(self, rb_intern("data"));
StringValue(v);
return v;
}
unpack(template) => array
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Calls String#unpack on sockopt.data.
sockopt = Socket::Option.new(:INET, :SOCKET, :KEEPALIVE, [1].pack("i")) p sockopt.unpack("i") #=> [1] p sockopt.data.unpack("i") #=> [1]
static VALUE
sockopt_unpack(VALUE self, VALUE template)
{
return rb_funcall(sockopt_data(self), rb_intern("unpack"), 1, template);
}