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support multiple network interfaces

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This commit is contained in:
ginuerzh
2022-03-01 21:48:50 +08:00
parent 07132d8de7
commit ffdf11e89e
44 changed files with 431 additions and 474 deletions
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93
pkg/chain/router.go
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@ -5,6 +5,7 @@ import (
"context"
"fmt"
"net"
"time"
"github.com/go-gost/gost/pkg/connector"
"github.com/go-gost/gost/pkg/hosts"
@ -13,11 +14,55 @@ import (
)
type Router struct {
Retries int
Chain Chainer
Hosts hosts.HostMapper
Resolver resolver.Resolver
Logger logger.Logger
timeout time.Duration
retries int
ifceName string
chain Chainer
resolver resolver.Resolver
hosts hosts.HostMapper
logger logger.Logger
}
func (r *Router) WithTimeout(timeout time.Duration) *Router {
r.timeout = timeout
return r
}
func (r *Router) WithRetries(retries int) *Router {
r.retries = retries
return r
}
func (r *Router) WithInterface(ifceName string) *Router {
r.ifceName = ifceName
return r
}
func (r *Router) WithChain(chain Chainer) *Router {
r.chain = chain
return r
}
func (r *Router) WithResolver(resolver resolver.Resolver) *Router {
r.resolver = resolver
return r
}
func (r *Router) WithHosts(hosts hosts.HostMapper) *Router {
r.hosts = hosts
return r
}
func (r *Router) Hosts() hosts.HostMapper {
if r != nil {
return r.hosts
}
return nil
}
func (r *Router) WithLogger(logger logger.Logger) *Router {
r.logger = logger
return r
}
func (r *Router) Dial(ctx context.Context, network, address string) (conn net.Conn, err error) {
@ -34,74 +79,76 @@ func (r *Router) Dial(ctx context.Context, network, address string) (conn net.Co
}
func (r *Router) dial(ctx context.Context, network, address string) (conn net.Conn, err error) {
count := r.Retries + 1
count := r.retries + 1
if count <= 0 {
count = 1
}
r.Logger.Debugf("dial %s/%s", address, network)
r.logger.Debugf("dial %s/%s", address, network)
for i := 0; i < count; i++ {
var route *Route
if r.Chain != nil {
route = r.Chain.Route(network, address)
if r.chain != nil {
route = r.chain.Route(network, address)
}
if r.Logger.IsLevelEnabled(logger.DebugLevel) {
if r.logger.IsLevelEnabled(logger.DebugLevel) {
buf := bytes.Buffer{}
for _, node := range route.Path() {
fmt.Fprintf(&buf, "%s@%s > ", node.Name, node.Addr)
}
fmt.Fprintf(&buf, "%s", address)
r.Logger.Debugf("route(retry=%d) %s", i, buf.String())
r.logger.Debugf("route(retry=%d) %s", i, buf.String())
}
address, err = resolve(ctx, "ip", address, r.Resolver, r.Hosts, r.Logger)
address, err = resolve(ctx, "ip", address, r.resolver, r.hosts, r.logger)
if err != nil {
r.Logger.Error(err)
r.logger.Error(err)
break
}
if route != nil {
route.logger = r.Logger
if route == nil {
route = &Route{}
}
route.ifceName = r.ifceName
route.logger = r.logger
conn, err = route.Dial(ctx, network, address)
if err == nil {
break
}
r.Logger.Errorf("route(retry=%d) %s", i, err)
r.logger.Errorf("route(retry=%d) %s", i, err)
}
return
}
func (r *Router) Bind(ctx context.Context, network, address string, opts ...connector.BindOption) (ln net.Listener, err error) {
count := r.Retries + 1
count := r.retries + 1
if count <= 0 {
count = 1
}
r.Logger.Debugf("bind on %s/%s", address, network)
r.logger.Debugf("bind on %s/%s", address, network)
for i := 0; i < count; i++ {
var route *Route
if r.Chain != nil {
route = r.Chain.Route(network, address)
if r.chain != nil {
route = r.chain.Route(network, address)
}
if r.Logger.IsLevelEnabled(logger.DebugLevel) {
if r.logger.IsLevelEnabled(logger.DebugLevel) {
buf := bytes.Buffer{}
for _, node := range route.Path() {
fmt.Fprintf(&buf, "%s@%s > ", node.Name, node.Addr)
}
fmt.Fprintf(&buf, "%s", address)
r.Logger.Debugf("route(retry=%d) %s", i, buf.String())
r.logger.Debugf("route(retry=%d) %s", i, buf.String())
}
ln, err = route.Bind(ctx, network, address, opts...)
if err == nil {
break
}
r.Logger.Errorf("route(retry=%d) %s", i, err)
r.logger.Errorf("route(retry=%d) %s", i, err)
}
return