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-rw-r--r--vendor/github.com/ishidawataru/sctp/LICENSE201
-rw-r--r--vendor/github.com/ishidawataru/sctp/README.md18
-rw-r--r--vendor/github.com/ishidawataru/sctp/sctp.go656
-rw-r--r--vendor/github.com/ishidawataru/sctp/sctp_linux.go227
-rw-r--r--vendor/github.com/ishidawataru/sctp/sctp_unsupported.go47
5 files changed, 1149 insertions, 0 deletions
diff --git a/vendor/github.com/ishidawataru/sctp/LICENSE b/vendor/github.com/ishidawataru/sctp/LICENSE
new file mode 100644
index 000000000..8dada3eda
--- /dev/null
+++ b/vendor/github.com/ishidawataru/sctp/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
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+ reproduction, and distribution of the Work otherwise complies with
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+ any Contribution intentionally submitted for inclusion in the Work
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+ this License, without any additional terms or conditions.
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+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
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+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
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+ risks associated with Your exercise of permissions under this License.
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+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
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+ negligent acts) or agreed to in writing, shall any Contributor be
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+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
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+ Unless required by applicable law or agreed to in writing, software
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diff --git a/vendor/github.com/ishidawataru/sctp/README.md b/vendor/github.com/ishidawataru/sctp/README.md
new file mode 100644
index 000000000..574ececa8
--- /dev/null
+++ b/vendor/github.com/ishidawataru/sctp/README.md
@@ -0,0 +1,18 @@
+Stream Control Transmission Protocol (SCTP)
+----
+
+[![Build Status](https://travis-ci.org/ishidawataru/sctp.svg?branch=master)](https://travis-ci.org/ishidawataru/sctp/builds)
+
+Examples
+----
+
+See `example/sctp.go`
+
+```go
+$ cd example
+$ go build
+$ # run example SCTP server
+$ ./example -server -port 1000 -ip 10.10.0.1,10.20.0.1
+$ # run example SCTP client
+$ ./example -port 1000 -ip 10.10.0.1,10.20.0.1
+```
diff --git a/vendor/github.com/ishidawataru/sctp/sctp.go b/vendor/github.com/ishidawataru/sctp/sctp.go
new file mode 100644
index 000000000..cac1a889c
--- /dev/null
+++ b/vendor/github.com/ishidawataru/sctp/sctp.go
@@ -0,0 +1,656 @@
+package sctp
+
+import (
+ "bytes"
+ "encoding/binary"
+ "fmt"
+ "net"
+ "strconv"
+ "strings"
+ "sync"
+ "sync/atomic"
+ "syscall"
+ "time"
+ "unsafe"
+)
+
+const (
+ SOL_SCTP = 132
+
+ SCTP_BINDX_ADD_ADDR = 0x01
+ SCTP_BINDX_REM_ADDR = 0x02
+
+ MSG_NOTIFICATION = 0x8000
+)
+
+const (
+ SCTP_RTOINFO = iota
+ SCTP_ASSOCINFO
+ SCTP_INITMSG
+ SCTP_NODELAY
+ SCTP_AUTOCLOSE
+ SCTP_SET_PEER_PRIMARY_ADDR
+ SCTP_PRIMARY_ADDR
+ SCTP_ADAPTATION_LAYER
+ SCTP_DISABLE_FRAGMENTS
+ SCTP_PEER_ADDR_PARAMS
+ SCTP_DEFAULT_SENT_PARAM
+ SCTP_EVENTS
+ SCTP_I_WANT_MAPPED_V4_ADDR
+ SCTP_MAXSEG
+ SCTP_STATUS
+ SCTP_GET_PEER_ADDR_INFO
+ SCTP_DELAYED_ACK_TIME
+ SCTP_DELAYED_ACK = SCTP_DELAYED_ACK_TIME
+ SCTP_DELAYED_SACK = SCTP_DELAYED_ACK_TIME
+
+ SCTP_SOCKOPT_BINDX_ADD = 100
+ SCTP_SOCKOPT_BINDX_REM = 101
+ SCTP_SOCKOPT_PEELOFF = 102
+ SCTP_GET_PEER_ADDRS = 108
+ SCTP_GET_LOCAL_ADDRS = 109
+ SCTP_SOCKOPT_CONNECTX = 110
+ SCTP_SOCKOPT_CONNECTX3 = 111
+)
+
+const (
+ SCTP_EVENT_DATA_IO = 1 << iota
+ SCTP_EVENT_ASSOCIATION
+ SCTP_EVENT_ADDRESS
+ SCTP_EVENT_SEND_FAILURE
+ SCTP_EVENT_PEER_ERROR
+ SCTP_EVENT_SHUTDOWN
+ SCTP_EVENT_PARTIAL_DELIVERY
+ SCTP_EVENT_ADAPTATION_LAYER
+ SCTP_EVENT_AUTHENTICATION
+ SCTP_EVENT_SENDER_DRY
+
+ SCTP_EVENT_ALL = SCTP_EVENT_DATA_IO | SCTP_EVENT_ASSOCIATION | SCTP_EVENT_ADDRESS | SCTP_EVENT_SEND_FAILURE | SCTP_EVENT_PEER_ERROR | SCTP_EVENT_SHUTDOWN | SCTP_EVENT_PARTIAL_DELIVERY | SCTP_EVENT_ADAPTATION_LAYER | SCTP_EVENT_AUTHENTICATION | SCTP_EVENT_SENDER_DRY
+)
+
+type SCTPNotificationType int
+
+const (
+ SCTP_SN_TYPE_BASE = SCTPNotificationType(iota + (1 << 15))
+ SCTP_ASSOC_CHANGE
+ SCTP_PEER_ADDR_CHANGE
+ SCTP_SEND_FAILED
+ SCTP_REMOTE_ERROR
+ SCTP_SHUTDOWN_EVENT
+ SCTP_PARTIAL_DELIVERY_EVENT
+ SCTP_ADAPTATION_INDICATION
+ SCTP_AUTHENTICATION_INDICATION
+ SCTP_SENDER_DRY_EVENT
+)
+
+type NotificationHandler func([]byte) error
+
+type EventSubscribe struct {
+ DataIO uint8
+ Association uint8
+ Address uint8
+ SendFailure uint8
+ PeerError uint8
+ Shutdown uint8
+ PartialDelivery uint8
+ AdaptationLayer uint8
+ Authentication uint8
+ SenderDry uint8
+}
+
+const (
+ SCTP_CMSG_INIT = iota
+ SCTP_CMSG_SNDRCV
+ SCTP_CMSG_SNDINFO
+ SCTP_CMSG_RCVINFO
+ SCTP_CMSG_NXTINFO
+)
+
+const (
+ SCTP_UNORDERED = 1 << iota
+ SCTP_ADDR_OVER
+ SCTP_ABORT
+ SCTP_SACK_IMMEDIATELY
+ SCTP_EOF
+)
+
+const (
+ SCTP_MAX_STREAM = 0xffff
+)
+
+type InitMsg struct {
+ NumOstreams uint16
+ MaxInstreams uint16
+ MaxAttempts uint16
+ MaxInitTimeout uint16
+}
+
+type SndRcvInfo struct {
+ Stream uint16
+ SSN uint16
+ Flags uint16
+ _ uint16
+ PPID uint32
+ Context uint32
+ TTL uint32
+ TSN uint32
+ CumTSN uint32
+ AssocID int32
+}
+
+type SndInfo struct {
+ SID uint16
+ Flags uint16
+ PPID uint32
+ Context uint32
+ AssocID int32
+}
+
+type GetAddrsOld struct {
+ AssocID int32
+ AddrNum int32
+ Addrs uintptr
+}
+
+type NotificationHeader struct {
+ Type uint16
+ Flags uint16
+ Length uint32
+}
+
+type SCTPState uint16
+
+const (
+ SCTP_COMM_UP = SCTPState(iota)
+ SCTP_COMM_LOST
+ SCTP_RESTART
+ SCTP_SHUTDOWN_COMP
+ SCTP_CANT_STR_ASSOC
+)
+
+var nativeEndian binary.ByteOrder
+var sndRcvInfoSize uintptr
+
+func init() {
+ i := uint16(1)
+ if *(*byte)(unsafe.Pointer(&i)) == 0 {
+ nativeEndian = binary.BigEndian
+ } else {
+ nativeEndian = binary.LittleEndian
+ }
+ info := SndRcvInfo{}
+ sndRcvInfoSize = unsafe.Sizeof(info)
+}
+
+func toBuf(v interface{}) []byte {
+ var buf bytes.Buffer
+ binary.Write(&buf, nativeEndian, v)
+ return buf.Bytes()
+}
+
+func htons(h uint16) uint16 {
+ if nativeEndian == binary.LittleEndian {
+ return (h << 8 & 0xff00) | (h >> 8 & 0xff)
+ }
+ return h
+}
+
+var ntohs = htons
+
+func setNumOstreams(fd, num int) error {
+ param := InitMsg{
+ NumOstreams: uint16(num),
+ }
+ optlen := unsafe.Sizeof(param)
+ _, _, err := setsockopt(fd, SCTP_INITMSG, uintptr(unsafe.Pointer(&param)), uintptr(optlen))
+ return err
+}
+
+type SCTPAddr struct {
+ IP []net.IP
+ Port int
+}
+
+func (a *SCTPAddr) ToRawSockAddrBuf() []byte {
+ buf := []byte{}
+ p := htons(uint16(a.Port))
+ for _, ip := range a.IP {
+ if ip.To4() != nil {
+ s := syscall.RawSockaddrInet4{
+ Family: syscall.AF_INET,
+ Port: p,
+ }
+ copy(s.Addr[:], ip.To4())
+ buf = append(buf, toBuf(s)...)
+ } else {
+ s := syscall.RawSockaddrInet6{
+ Family: syscall.AF_INET6,
+ Port: p,
+ }
+ copy(s.Addr[:], ip)
+ buf = append(buf, toBuf(s)...)
+ }
+ }
+ return buf
+}
+
+func (a *SCTPAddr) String() string {
+ var b bytes.Buffer
+
+ for n, i := range a.IP {
+ if a.IP[n].To4() != nil {
+ b.WriteString(i.String())
+ } else if a.IP[n].To16() != nil {
+ b.WriteRune('[')
+ b.WriteString(i.String())
+ b.WriteRune(']')
+ }
+ if n < len(a.IP)-1 {
+ b.WriteRune('/')
+ }
+ }
+ b.WriteRune(':')
+ b.WriteString(strconv.Itoa(a.Port))
+ return b.String()
+}
+
+func (a *SCTPAddr) Network() string { return "sctp" }
+
+func ResolveSCTPAddr(network, addrs string) (*SCTPAddr, error) {
+ tcpnet := ""
+ switch network {
+ case "", "sctp":
+ case "sctp4":
+ tcpnet = "tcp4"
+ case "sctp6":
+ tcpnet = "tcp6"
+ default:
+ return nil, fmt.Errorf("invalid net: %s", network)
+ }
+ elems := strings.Split(addrs, "/")
+ if len(elems) == 0 {
+ return nil, fmt.Errorf("invalid input: %s", addrs)
+ }
+ ipaddrs := make([]net.IP, 0, len(elems))
+ for _, e := range elems[:len(elems)-1] {
+ tcpa, err := net.ResolveTCPAddr(tcpnet, e+":")
+ if err != nil {
+ return nil, err
+ }
+ ipaddrs = append(ipaddrs, tcpa.IP)
+ }
+ tcpa, err := net.ResolveTCPAddr(tcpnet, elems[len(elems)-1])
+ if err != nil {
+ return nil, err
+ }
+ if tcpa.IP != nil {
+ ipaddrs = append(ipaddrs, tcpa.IP)
+ } else {
+ ipaddrs = nil
+ }
+ return &SCTPAddr{
+ IP: ipaddrs,
+ Port: tcpa.Port,
+ }, nil
+}
+
+func SCTPConnect(fd int, addr *SCTPAddr) (int, error) {
+ buf := addr.ToRawSockAddrBuf()
+ param := GetAddrsOld{
+ AddrNum: int32(len(buf)),
+ Addrs: uintptr(uintptr(unsafe.Pointer(&buf[0]))),
+ }
+ optlen := unsafe.Sizeof(param)
+ _, _, err := getsockopt(fd, SCTP_SOCKOPT_CONNECTX3, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
+ if err == nil {
+ return int(param.AssocID), nil
+ } else if err != syscall.ENOPROTOOPT {
+ return 0, err
+ }
+ r0, _, err := setsockopt(fd, SCTP_SOCKOPT_CONNECTX, uintptr(unsafe.Pointer(&buf[0])), uintptr(len(buf)))
+ return int(r0), err
+}
+
+func SCTPBind(fd int, addr *SCTPAddr, flags int) error {
+ var option uintptr
+ switch flags {
+ case SCTP_BINDX_ADD_ADDR:
+ option = SCTP_SOCKOPT_BINDX_ADD
+ case SCTP_BINDX_REM_ADDR:
+ option = SCTP_SOCKOPT_BINDX_REM
+ default:
+ return syscall.EINVAL
+ }
+
+ buf := addr.ToRawSockAddrBuf()
+ _, _, err := setsockopt(fd, option, uintptr(unsafe.Pointer(&buf[0])), uintptr(len(buf)))
+ return err
+}
+
+type SCTPConn struct {
+ _fd int32
+ notificationHandler NotificationHandler
+}
+
+func (c *SCTPConn) fd() int {
+ return int(atomic.LoadInt32(&c._fd))
+}
+
+func NewSCTPConn(fd int, handler NotificationHandler) *SCTPConn {
+ conn := &SCTPConn{
+ _fd: int32(fd),
+ notificationHandler: handler,
+ }
+ return conn
+}
+
+func (c *SCTPConn) Write(b []byte) (int, error) {
+ return c.SCTPWrite(b, nil)
+}
+
+func (c *SCTPConn) Read(b []byte) (int, error) {
+ n, _, err := c.SCTPRead(b)
+ if n < 0 {
+ n = 0
+ }
+ return n, err
+}
+
+func (c *SCTPConn) SetInitMsg(numOstreams, maxInstreams, maxAttempts, maxInitTimeout int) error {
+ param := InitMsg{
+ NumOstreams: uint16(numOstreams),
+ MaxInstreams: uint16(maxInstreams),
+ MaxAttempts: uint16(maxAttempts),
+ MaxInitTimeout: uint16(maxInitTimeout),
+ }
+ optlen := unsafe.Sizeof(param)
+ _, _, err := setsockopt(c.fd(), SCTP_INITMSG, uintptr(unsafe.Pointer(&param)), uintptr(optlen))
+ return err
+}
+
+func (c *SCTPConn) SubscribeEvents(flags int) error {
+ var d, a, ad, sf, p, sh, pa, ada, au, se uint8
+ if flags&SCTP_EVENT_DATA_IO > 0 {
+ d = 1
+ }
+ if flags&SCTP_EVENT_ASSOCIATION > 0 {
+ a = 1
+ }
+ if flags&SCTP_EVENT_ADDRESS > 0 {
+ ad = 1
+ }
+ if flags&SCTP_EVENT_SEND_FAILURE > 0 {
+ sf = 1
+ }
+ if flags&SCTP_EVENT_PEER_ERROR > 0 {
+ p = 1
+ }
+ if flags&SCTP_EVENT_SHUTDOWN > 0 {
+ sh = 1
+ }
+ if flags&SCTP_EVENT_PARTIAL_DELIVERY > 0 {
+ pa = 1
+ }
+ if flags&SCTP_EVENT_ADAPTATION_LAYER > 0 {
+ ada = 1
+ }
+ if flags&SCTP_EVENT_AUTHENTICATION > 0 {
+ au = 1
+ }
+ if flags&SCTP_EVENT_SENDER_DRY > 0 {
+ se = 1
+ }
+ param := EventSubscribe{
+ DataIO: d,
+ Association: a,
+ Address: ad,
+ SendFailure: sf,
+ PeerError: p,
+ Shutdown: sh,
+ PartialDelivery: pa,
+ AdaptationLayer: ada,
+ Authentication: au,
+ SenderDry: se,
+ }
+ optlen := unsafe.Sizeof(param)
+ _, _, err := setsockopt(c.fd(), SCTP_EVENTS, uintptr(unsafe.Pointer(&param)), uintptr(optlen))
+ return err
+}
+
+func (c *SCTPConn) SubscribedEvents() (int, error) {
+ param := EventSubscribe{}
+ optlen := unsafe.Sizeof(param)
+ _, _, err := getsockopt(c.fd(), SCTP_EVENTS, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
+ if err != nil {
+ return 0, err
+ }
+ var flags int
+ if param.DataIO > 0 {
+ flags |= SCTP_EVENT_DATA_IO
+ }
+ if param.Association > 0 {
+ flags |= SCTP_EVENT_ASSOCIATION
+ }
+ if param.Address > 0 {
+ flags |= SCTP_EVENT_ADDRESS
+ }
+ if param.SendFailure > 0 {
+ flags |= SCTP_EVENT_SEND_FAILURE
+ }
+ if param.PeerError > 0 {
+ flags |= SCTP_EVENT_PEER_ERROR
+ }
+ if param.Shutdown > 0 {
+ flags |= SCTP_EVENT_SHUTDOWN
+ }
+ if param.PartialDelivery > 0 {
+ flags |= SCTP_EVENT_PARTIAL_DELIVERY
+ }
+ if param.AdaptationLayer > 0 {
+ flags |= SCTP_EVENT_ADAPTATION_LAYER
+ }
+ if param.Authentication > 0 {
+ flags |= SCTP_EVENT_AUTHENTICATION
+ }
+ if param.SenderDry > 0 {
+ flags |= SCTP_EVENT_SENDER_DRY
+ }
+ return flags, nil
+}
+
+func (c *SCTPConn) SetDefaultSentParam(info *SndRcvInfo) error {
+ optlen := unsafe.Sizeof(*info)
+ _, _, err := setsockopt(c.fd(), SCTP_DEFAULT_SENT_PARAM, uintptr(unsafe.Pointer(info)), uintptr(optlen))
+ return err
+}
+
+func (c *SCTPConn) GetDefaultSentParam() (*SndRcvInfo, error) {
+ info := &SndRcvInfo{}
+ optlen := unsafe.Sizeof(*info)
+ _, _, err := getsockopt(c.fd(), SCTP_DEFAULT_SENT_PARAM, uintptr(unsafe.Pointer(info)), uintptr(unsafe.Pointer(&optlen)))
+ return info, err
+}
+
+func resolveFromRawAddr(ptr unsafe.Pointer, n int) (*SCTPAddr, error) {
+ addr := &SCTPAddr{
+ IP: make([]net.IP, n),
+ }
+
+ switch family := (*(*syscall.RawSockaddrAny)(ptr)).Addr.Family; family {
+ case syscall.AF_INET:
+ addr.Port = int(ntohs(uint16((*(*syscall.RawSockaddrInet4)(ptr)).Port)))
+ tmp := syscall.RawSockaddrInet4{}
+ size := unsafe.Sizeof(tmp)
+ for i := 0; i < n; i++ {
+ a := *(*syscall.RawSockaddrInet4)(unsafe.Pointer(
+ uintptr(ptr) + size*uintptr(i)))
+ addr.IP[i] = a.Addr[:]
+ }
+ case syscall.AF_INET6:
+ addr.Port = int(ntohs(uint16((*(*syscall.RawSockaddrInet4)(ptr)).Port)))
+ tmp := syscall.RawSockaddrInet6{}
+ size := unsafe.Sizeof(tmp)
+ for i := 0; i < n; i++ {
+ a := *(*syscall.RawSockaddrInet6)(unsafe.Pointer(
+ uintptr(ptr) + size*uintptr(i)))
+ addr.IP[i] = a.Addr[:]
+ }
+ default:
+ return nil, fmt.Errorf("unknown address family: %d", family)
+ }
+ return addr, nil
+}
+
+func sctpGetAddrs(fd, id, optname int) (*SCTPAddr, error) {
+
+ type getaddrs struct {
+ assocId int32
+ addrNum uint32
+ addrs [4096]byte
+ }
+ param := getaddrs{
+ assocId: int32(id),
+ }
+ optlen := unsafe.Sizeof(param)
+ _, _, err := getsockopt(fd, uintptr(optname), uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
+ if err != nil {
+ return nil, err
+ }
+ return resolveFromRawAddr(unsafe.Pointer(&param.addrs), int(param.addrNum))
+}
+
+func (c *SCTPConn) SCTPGetPrimaryPeerAddr() (*SCTPAddr, error) {
+
+ type sctpGetSetPrim struct {
+ assocId int32
+ addrs [128]byte
+ }
+ param := sctpGetSetPrim{
+ assocId: int32(0),
+ }
+ optlen := unsafe.Sizeof(param)
+ _, _, err := getsockopt(c.fd(), SCTP_PRIMARY_ADDR, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
+ if err != nil {
+ return nil, err
+ }
+ return resolveFromRawAddr(unsafe.Pointer(&param.addrs), 1)
+}
+
+func (c *SCTPConn) SCTPLocalAddr(id int) (*SCTPAddr, error) {
+ return sctpGetAddrs(c.fd(), id, SCTP_GET_LOCAL_ADDRS)
+}
+
+func (c *SCTPConn) SCTPRemoteAddr(id int) (*SCTPAddr, error) {
+ return sctpGetAddrs(c.fd(), id, SCTP_GET_PEER_ADDRS)
+}
+
+func (c *SCTPConn) LocalAddr() net.Addr {
+ addr, err := sctpGetAddrs(c.fd(), 0, SCTP_GET_LOCAL_ADDRS)
+ if err != nil {
+ return nil
+ }
+ return addr
+}
+
+func (c *SCTPConn) RemoteAddr() net.Addr {
+ addr, err := sctpGetAddrs(c.fd(), 0, SCTP_GET_PEER_ADDRS)
+ if err != nil {
+ return nil
+ }
+ return addr
+}
+
+func (c *SCTPConn) PeelOff(id int) (*SCTPConn, error) {
+ type peeloffArg struct {
+ assocId int32
+ sd int
+ }
+ param := peeloffArg{
+ assocId: int32(id),
+ }
+ optlen := unsafe.Sizeof(param)
+ _, _, err := getsockopt(c.fd(), SCTP_SOCKOPT_PEELOFF, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
+ if err != nil {
+ return nil, err
+ }
+ return &SCTPConn{_fd: int32(param.sd)}, nil
+}
+
+func (c *SCTPConn) SetDeadline(t time.Time) error {
+ return syscall.EOPNOTSUPP
+}
+
+func (c *SCTPConn) SetReadDeadline(t time.Time) error {
+ return syscall.EOPNOTSUPP
+}
+
+func (c *SCTPConn) SetWriteDeadline(t time.Time) error {
+ return syscall.EOPNOTSUPP
+}
+
+type SCTPListener struct {
+ fd int
+ m sync.Mutex
+}
+
+func (ln *SCTPListener) Addr() net.Addr {
+ laddr, err := sctpGetAddrs(ln.fd, 0, SCTP_GET_LOCAL_ADDRS)
+ if err != nil {
+ return nil
+ }
+ return laddr
+}
+
+type SCTPSndRcvInfoWrappedConn struct {
+ conn *SCTPConn
+}
+
+func NewSCTPSndRcvInfoWrappedConn(conn *SCTPConn) *SCTPSndRcvInfoWrappedConn {
+ conn.SubscribeEvents(SCTP_EVENT_DATA_IO)
+ return &SCTPSndRcvInfoWrappedConn{conn}
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) Write(b []byte) (int, error) {
+ if len(b) < int(sndRcvInfoSize) {
+ return 0, syscall.EINVAL
+ }
+ info := (*SndRcvInfo)(unsafe.Pointer(&b[0]))
+ n, err := c.conn.SCTPWrite(b[sndRcvInfoSize:], info)
+ return n + int(sndRcvInfoSize), err
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) Read(b []byte) (int, error) {
+ if len(b) < int(sndRcvInfoSize) {
+ return 0, syscall.EINVAL
+ }
+ n, info, err := c.conn.SCTPRead(b[sndRcvInfoSize:])
+ if err != nil {
+ return n, err
+ }
+ copy(b, toBuf(info))
+ return n + int(sndRcvInfoSize), err
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) Close() error {
+ return c.conn.Close()
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) LocalAddr() net.Addr {
+ return c.conn.LocalAddr()
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) RemoteAddr() net.Addr {
+ return c.conn.RemoteAddr()
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) SetDeadline(t time.Time) error {
+ return c.conn.SetDeadline(t)
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) SetReadDeadline(t time.Time) error {
+ return c.conn.SetReadDeadline(t)
+}
+
+func (c *SCTPSndRcvInfoWrappedConn) SetWriteDeadline(t time.Time) error {
+ return c.conn.SetWriteDeadline(t)
+}
diff --git a/vendor/github.com/ishidawataru/sctp/sctp_linux.go b/vendor/github.com/ishidawataru/sctp/sctp_linux.go
new file mode 100644
index 000000000..f93ab8622
--- /dev/null
+++ b/vendor/github.com/ishidawataru/sctp/sctp_linux.go
@@ -0,0 +1,227 @@
+// +build linux,!386
+
+package sctp
+
+import (
+ "fmt"
+ "io"
+ "net"
+ "sync/atomic"
+ "syscall"
+ "unsafe"
+)
+
+func setsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
+ // FIXME: syscall.SYS_SETSOCKOPT is undefined on 386
+ r0, r1, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT,
+ uintptr(fd),
+ SOL_SCTP,
+ optname,
+ optval,
+ optlen,
+ 0)
+ if errno != 0 {
+ return r0, r1, errno
+ }
+ return r0, r1, nil
+}
+
+func getsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
+ // FIXME: syscall.SYS_GETSOCKOPT is undefined on 386
+ r0, r1, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT,
+ uintptr(fd),
+ SOL_SCTP,
+ optname,
+ optval,
+ optlen,
+ 0)
+ if errno != 0 {
+ return r0, r1, errno
+ }
+ return r0, r1, nil
+}
+
+func (c *SCTPConn) SCTPWrite(b []byte, info *SndRcvInfo) (int, error) {
+ var cbuf []byte
+ if info != nil {
+ cmsgBuf := toBuf(info)
+ hdr := &syscall.Cmsghdr{
+ Level: syscall.IPPROTO_SCTP,
+ Type: SCTP_CMSG_SNDRCV,
+ }
+
+ // bitwidth of hdr.Len is platform-specific,
+ // so we use hdr.SetLen() rather than directly setting hdr.Len
+ hdr.SetLen(syscall.CmsgSpace(len(cmsgBuf)))
+ cbuf = append(toBuf(hdr), cmsgBuf...)
+ }
+ return syscall.SendmsgN(c.fd(), b, cbuf, nil, 0)
+}
+
+func parseSndRcvInfo(b []byte) (*SndRcvInfo, error) {
+ msgs, err := syscall.ParseSocketControlMessage(b)
+ if err != nil {
+ return nil, err
+ }
+ for _, m := range msgs {
+ if m.Header.Level == syscall.IPPROTO_SCTP {
+ switch m.Header.Type {
+ case SCTP_CMSG_SNDRCV:
+ return (*SndRcvInfo)(unsafe.Pointer(&m.Data[0])), nil
+ }
+ }
+ }
+ return nil, nil
+}
+
+func (c *SCTPConn) SCTPRead(b []byte) (int, *SndRcvInfo, error) {
+ oob := make([]byte, 254)
+ for {
+ n, oobn, recvflags, _, err := syscall.Recvmsg(c.fd(), b, oob, 0)
+ if err != nil {
+ return n, nil, err
+ }
+
+ if n == 0 && oobn == 0 {
+ return 0, nil, io.EOF
+ }
+
+ if recvflags&MSG_NOTIFICATION > 0 && c.notificationHandler != nil {
+ if err := c.notificationHandler(b[:n]); err != nil {
+ return 0, nil, err
+ }
+ } else {
+ var info *SndRcvInfo
+ if oobn > 0 {
+ info, err = parseSndRcvInfo(oob[:oobn])
+ }
+ return n, info, err
+ }
+ }
+}
+
+func (c *SCTPConn) Close() error {
+ if c != nil {
+ fd := atomic.SwapInt32(&c._fd, -1)
+ if fd > 0 {
+ info := &SndRcvInfo{
+ Flags: SCTP_EOF,
+ }
+ c.SCTPWrite(nil, info)
+ syscall.Shutdown(int(fd), syscall.SHUT_RDWR)
+ return syscall.Close(int(fd))
+ }
+ }
+ return syscall.EBADF
+}
+
+func ListenSCTP(net string, laddr *SCTPAddr) (*SCTPListener, error) {
+ af := syscall.AF_INET
+ switch net {
+ case "sctp":
+ hasv6 := func(addr *SCTPAddr) bool {
+ if addr == nil {
+ return false
+ }
+ for _, ip := range addr.IP {
+ if ip.To4() == nil {
+ return true
+ }
+ }
+ return false
+ }
+ if hasv6(laddr) {
+ af = syscall.AF_INET6
+ }
+ case "sctp4":
+ case "sctp6":
+ af = syscall.AF_INET6
+ default:
+ return nil, fmt.Errorf("invalid net: %s", net)
+ }
+
+ sock, err := syscall.Socket(
+ af,
+ syscall.SOCK_STREAM,
+ syscall.IPPROTO_SCTP,
+ )
+ if err != nil {
+ return nil, err
+ }
+ err = setNumOstreams(sock, SCTP_MAX_STREAM)
+ if err != nil {
+ return nil, err
+ }
+ if laddr != nil && len(laddr.IP) != 0 {
+ err := SCTPBind(sock, laddr, SCTP_BINDX_ADD_ADDR)
+ if err != nil {
+ return nil, err
+ }
+ }
+ err = syscall.Listen(sock, syscall.SOMAXCONN)
+ if err != nil {
+ return nil, err
+ }
+ return &SCTPListener{
+ fd: sock,
+ }, nil
+}
+
+func (ln *SCTPListener) Accept() (net.Conn, error) {
+ fd, _, err := syscall.Accept4(ln.fd, 0)
+ return NewSCTPConn(fd, nil), err
+}
+
+func (ln *SCTPListener) Close() error {
+ syscall.Shutdown(ln.fd, syscall.SHUT_RDWR)
+ return syscall.Close(ln.fd)
+}
+
+func DialSCTP(net string, laddr, raddr *SCTPAddr) (*SCTPConn, error) {
+ af := syscall.AF_INET
+ switch net {
+ case "sctp":
+ hasv6 := func(addr *SCTPAddr) bool {
+ if addr == nil {
+ return false
+ }
+ for _, ip := range addr.IP {
+ if ip.To4() == nil {
+ return true
+ }
+ }
+ return false
+ }
+ if hasv6(laddr) || hasv6(raddr) {
+ af = syscall.AF_INET6
+ }
+ case "sctp4":
+ case "sctp6":
+ af = syscall.AF_INET6
+ default:
+ return nil, fmt.Errorf("invalid net: %s", net)
+ }
+ sock, err := syscall.Socket(
+ af,
+ syscall.SOCK_STREAM,
+ syscall.IPPROTO_SCTP,
+ )
+ if err != nil {
+ return nil, err
+ }
+ err = setNumOstreams(sock, SCTP_MAX_STREAM)
+ if err != nil {
+ return nil, err
+ }
+ if laddr != nil {
+ err := SCTPBind(sock, laddr, SCTP_BINDX_ADD_ADDR)
+ if err != nil {
+ return nil, err
+ }
+ }
+ _, err = SCTPConnect(sock, raddr)
+ if err != nil {
+ return nil, err
+ }
+ return NewSCTPConn(sock, nil), nil
+}
diff --git a/vendor/github.com/ishidawataru/sctp/sctp_unsupported.go b/vendor/github.com/ishidawataru/sctp/sctp_unsupported.go
new file mode 100644
index 000000000..adcbf78b4
--- /dev/null
+++ b/vendor/github.com/ishidawataru/sctp/sctp_unsupported.go
@@ -0,0 +1,47 @@
+// +build !linux linux,386
+
+package sctp
+
+import (
+ "errors"
+ "net"
+ "runtime"
+)
+
+var ErrUnsupported = errors.New("SCTP is unsupported on " + runtime.GOOS + "/" + runtime.GOARCH)
+
+func setsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
+ return 0, 0, ErrUnsupported
+}
+
+func getsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
+ return 0, 0, ErrUnsupported
+}
+
+func (c *SCTPConn) SCTPWrite(b []byte, info *SndRcvInfo) (int, error) {
+ return 0, ErrUnsupported
+}
+
+func (c *SCTPConn) SCTPRead(b []byte) (int, *SndRcvInfo, error) {
+ return 0, nil, ErrUnsupported
+}
+
+func (c *SCTPConn) Close() error {
+ return ErrUnsupported
+}
+
+func ListenSCTP(net string, laddr *SCTPAddr) (*SCTPListener, error) {
+ return nil, ErrUnsupported
+}
+
+func (ln *SCTPListener) Accept() (net.Conn, error) {
+ return nil, ErrUnsupported
+}
+
+func (ln *SCTPListener) Close() error {
+ return ErrUnsupported
+}
+
+func DialSCTP(net string, laddr, raddr *SCTPAddr) (*SCTPConn, error) {
+ return nil, ErrUnsupported
+}