aboutsummaryrefslogtreecommitdiff
path: root/vendor/google.golang.org/appengine/socket/socket_classic.go
diff options
context:
space:
mode:
authorNiall Sheridan <nsheridan@gmail.com>2018-08-09 23:29:20 +0100
committerNiall Sheridan <nsheridan@gmail.com>2018-08-09 23:43:59 +0100
commit347c11ec42264c579eb3f19494e4f75ab8bb8f0d (patch)
tree0171d2a9bcd67e7b9f6a78bbf6af4627e59f5aa1 /vendor/google.golang.org/appengine/socket/socket_classic.go
parent9f8f0194a3c21e640a5b917f86bf204c014d730d (diff)
Remove gRPC
This hasn't been enabled in a while due to gRPC limitations
Diffstat (limited to 'vendor/google.golang.org/appengine/socket/socket_classic.go')
-rw-r--r--vendor/google.golang.org/appengine/socket/socket_classic.go290
1 files changed, 0 insertions, 290 deletions
diff --git a/vendor/google.golang.org/appengine/socket/socket_classic.go b/vendor/google.golang.org/appengine/socket/socket_classic.go
deleted file mode 100644
index 0ad50e2..0000000
--- a/vendor/google.golang.org/appengine/socket/socket_classic.go
+++ /dev/null
@@ -1,290 +0,0 @@
-// Copyright 2012 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-// +build appengine
-
-package socket
-
-import (
- "fmt"
- "io"
- "net"
- "strconv"
- "time"
-
- "github.com/golang/protobuf/proto"
- "golang.org/x/net/context"
- "google.golang.org/appengine/internal"
-
- pb "google.golang.org/appengine/internal/socket"
-)
-
-// Dial connects to the address addr on the network protocol.
-// The address format is host:port, where host may be a hostname or an IP address.
-// Known protocols are "tcp" and "udp".
-// The returned connection satisfies net.Conn, and is valid while ctx is valid;
-// if the connection is to be used after ctx becomes invalid, invoke SetContext
-// with the new context.
-func Dial(ctx context.Context, protocol, addr string) (*Conn, error) {
- return DialTimeout(ctx, protocol, addr, 0)
-}
-
-var ipFamilies = []pb.CreateSocketRequest_SocketFamily{
- pb.CreateSocketRequest_IPv4,
- pb.CreateSocketRequest_IPv6,
-}
-
-// DialTimeout is like Dial but takes a timeout.
-// The timeout includes name resolution, if required.
-func DialTimeout(ctx context.Context, protocol, addr string, timeout time.Duration) (*Conn, error) {
- dialCtx := ctx // Used for dialing and name resolution, but not stored in the *Conn.
- if timeout > 0 {
- var cancel context.CancelFunc
- dialCtx, cancel = context.WithTimeout(ctx, timeout)
- defer cancel()
- }
-
- host, portStr, err := net.SplitHostPort(addr)
- if err != nil {
- return nil, err
- }
- port, err := strconv.Atoi(portStr)
- if err != nil {
- return nil, fmt.Errorf("socket: bad port %q: %v", portStr, err)
- }
-
- var prot pb.CreateSocketRequest_SocketProtocol
- switch protocol {
- case "tcp":
- prot = pb.CreateSocketRequest_TCP
- case "udp":
- prot = pb.CreateSocketRequest_UDP
- default:
- return nil, fmt.Errorf("socket: unknown protocol %q", protocol)
- }
-
- packedAddrs, resolved, err := resolve(dialCtx, ipFamilies, host)
- if err != nil {
- return nil, fmt.Errorf("socket: failed resolving %q: %v", host, err)
- }
- if len(packedAddrs) == 0 {
- return nil, fmt.Errorf("no addresses for %q", host)
- }
-
- packedAddr := packedAddrs[0] // use first address
- fam := pb.CreateSocketRequest_IPv4
- if len(packedAddr) == net.IPv6len {
- fam = pb.CreateSocketRequest_IPv6
- }
-
- req := &pb.CreateSocketRequest{
- Family: fam.Enum(),
- Protocol: prot.Enum(),
- RemoteIp: &pb.AddressPort{
- Port: proto.Int32(int32(port)),
- PackedAddress: packedAddr,
- },
- }
- if resolved {
- req.RemoteIp.HostnameHint = &host
- }
- res := &pb.CreateSocketReply{}
- if err := internal.Call(dialCtx, "remote_socket", "CreateSocket", req, res); err != nil {
- return nil, err
- }
-
- return &Conn{
- ctx: ctx,
- desc: res.GetSocketDescriptor(),
- prot: prot,
- local: res.ProxyExternalIp,
- remote: req.RemoteIp,
- }, nil
-}
-
-// LookupIP returns the given host's IP addresses.
-func LookupIP(ctx context.Context, host string) (addrs []net.IP, err error) {
- packedAddrs, _, err := resolve(ctx, ipFamilies, host)
- if err != nil {
- return nil, fmt.Errorf("socket: failed resolving %q: %v", host, err)
- }
- addrs = make([]net.IP, len(packedAddrs))
- for i, pa := range packedAddrs {
- addrs[i] = net.IP(pa)
- }
- return addrs, nil
-}
-
-func resolve(ctx context.Context, fams []pb.CreateSocketRequest_SocketFamily, host string) ([][]byte, bool, error) {
- // Check if it's an IP address.
- if ip := net.ParseIP(host); ip != nil {
- if ip := ip.To4(); ip != nil {
- return [][]byte{ip}, false, nil
- }
- return [][]byte{ip}, false, nil
- }
-
- req := &pb.ResolveRequest{
- Name: &host,
- AddressFamilies: fams,
- }
- res := &pb.ResolveReply{}
- if err := internal.Call(ctx, "remote_socket", "Resolve", req, res); err != nil {
- // XXX: need to map to pb.ResolveReply_ErrorCode?
- return nil, false, err
- }
- return res.PackedAddress, true, nil
-}
-
-// withDeadline is like context.WithDeadline, except it ignores the zero deadline.
-func withDeadline(parent context.Context, deadline time.Time) (context.Context, context.CancelFunc) {
- if deadline.IsZero() {
- return parent, func() {}
- }
- return context.WithDeadline(parent, deadline)
-}
-
-// Conn represents a socket connection.
-// It implements net.Conn.
-type Conn struct {
- ctx context.Context
- desc string
- offset int64
-
- prot pb.CreateSocketRequest_SocketProtocol
- local, remote *pb.AddressPort
-
- readDeadline, writeDeadline time.Time // optional
-}
-
-// SetContext sets the context that is used by this Conn.
-// It is usually used only when using a Conn that was created in a different context,
-// such as when a connection is created during a warmup request but used while
-// servicing a user request.
-func (cn *Conn) SetContext(ctx context.Context) {
- cn.ctx = ctx
-}
-
-func (cn *Conn) Read(b []byte) (n int, err error) {
- const maxRead = 1 << 20
- if len(b) > maxRead {
- b = b[:maxRead]
- }
-
- req := &pb.ReceiveRequest{
- SocketDescriptor: &cn.desc,
- DataSize: proto.Int32(int32(len(b))),
- }
- res := &pb.ReceiveReply{}
- if !cn.readDeadline.IsZero() {
- req.TimeoutSeconds = proto.Float64(cn.readDeadline.Sub(time.Now()).Seconds())
- }
- ctx, cancel := withDeadline(cn.ctx, cn.readDeadline)
- defer cancel()
- if err := internal.Call(ctx, "remote_socket", "Receive", req, res); err != nil {
- return 0, err
- }
- if len(res.Data) == 0 {
- return 0, io.EOF
- }
- if len(res.Data) > len(b) {
- return 0, fmt.Errorf("socket: internal error: read too much data: %d > %d", len(res.Data), len(b))
- }
- return copy(b, res.Data), nil
-}
-
-func (cn *Conn) Write(b []byte) (n int, err error) {
- const lim = 1 << 20 // max per chunk
-
- for n < len(b) {
- chunk := b[n:]
- if len(chunk) > lim {
- chunk = chunk[:lim]
- }
-
- req := &pb.SendRequest{
- SocketDescriptor: &cn.desc,
- Data: chunk,
- StreamOffset: &cn.offset,
- }
- res := &pb.SendReply{}
- if !cn.writeDeadline.IsZero() {
- req.TimeoutSeconds = proto.Float64(cn.writeDeadline.Sub(time.Now()).Seconds())
- }
- ctx, cancel := withDeadline(cn.ctx, cn.writeDeadline)
- defer cancel()
- if err = internal.Call(ctx, "remote_socket", "Send", req, res); err != nil {
- // assume zero bytes were sent in this RPC
- break
- }
- n += int(res.GetDataSent())
- cn.offset += int64(res.GetDataSent())
- }
-
- return
-}
-
-func (cn *Conn) Close() error {
- req := &pb.CloseRequest{
- SocketDescriptor: &cn.desc,
- }
- res := &pb.CloseReply{}
- if err := internal.Call(cn.ctx, "remote_socket", "Close", req, res); err != nil {
- return err
- }
- cn.desc = "CLOSED"
- return nil
-}
-
-func addr(prot pb.CreateSocketRequest_SocketProtocol, ap *pb.AddressPort) net.Addr {
- if ap == nil {
- return nil
- }
- switch prot {
- case pb.CreateSocketRequest_TCP:
- return &net.TCPAddr{
- IP: net.IP(ap.PackedAddress),
- Port: int(*ap.Port),
- }
- case pb.CreateSocketRequest_UDP:
- return &net.UDPAddr{
- IP: net.IP(ap.PackedAddress),
- Port: int(*ap.Port),
- }
- }
- panic("unknown protocol " + prot.String())
-}
-
-func (cn *Conn) LocalAddr() net.Addr { return addr(cn.prot, cn.local) }
-func (cn *Conn) RemoteAddr() net.Addr { return addr(cn.prot, cn.remote) }
-
-func (cn *Conn) SetDeadline(t time.Time) error {
- cn.readDeadline = t
- cn.writeDeadline = t
- return nil
-}
-
-func (cn *Conn) SetReadDeadline(t time.Time) error {
- cn.readDeadline = t
- return nil
-}
-
-func (cn *Conn) SetWriteDeadline(t time.Time) error {
- cn.writeDeadline = t
- return nil
-}
-
-// KeepAlive signals that the connection is still in use.
-// It may be called to prevent the socket being closed due to inactivity.
-func (cn *Conn) KeepAlive() error {
- req := &pb.GetSocketNameRequest{
- SocketDescriptor: &cn.desc,
- }
- res := &pb.GetSocketNameReply{}
- return internal.Call(cn.ctx, "remote_socket", "GetSocketName", req, res)
-}
-
-func init() {
- internal.RegisterErrorCodeMap("remote_socket", pb.RemoteSocketServiceError_ErrorCode_name)
-}