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server.go
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server.go
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package http
import (
"errors"
"fmt"
"github.com/tobyxdd/hysteria/pkg/transport"
"github.com/tobyxdd/hysteria/pkg/utils"
"net"
"net/http"
"time"
"github.com/elazarl/goproxy/ext/auth"
"github.com/elazarl/goproxy"
"github.com/tobyxdd/hysteria/pkg/acl"
"github.com/tobyxdd/hysteria/pkg/core"
)
func NewProxyHTTPServer(hyClient *core.Client, transport *transport.ClientTransport, idleTimeout time.Duration,
aclEngine *acl.Engine, newDialFunc func(reqAddr string, action acl.Action, arg string),
basicAuthFunc func(user, password string) bool) (*goproxy.ProxyHttpServer, error) {
proxy := goproxy.NewProxyHttpServer()
proxy.Logger = &nopLogger{}
proxy.NonproxyHandler = http.NotFoundHandler()
proxy.Tr = &http.Transport{
Dial: func(network, addr string) (net.Conn, error) {
// Parse addr string
host, port, err := utils.SplitHostPort(addr)
if err != nil {
return nil, err
}
// ACL
action, arg := acl.ActionProxy, ""
var ipAddr *net.IPAddr
var resErr error
if aclEngine != nil {
action, arg, _, ipAddr, resErr = aclEngine.ResolveAndMatch(host)
// Doesn't always matter if the resolution fails, as we may send it through HyClient
}
newDialFunc(addr, action, arg)
// Handle according to the action
switch action {
case acl.ActionDirect:
if resErr != nil {
return nil, resErr
}
return transport.DialTCP(&net.TCPAddr{
IP: ipAddr.IP,
Port: int(port),
Zone: ipAddr.Zone,
})
case acl.ActionProxy:
return hyClient.DialTCP(addr)
case acl.ActionBlock:
return nil, errors.New("blocked by ACL")
case acl.ActionHijack:
hijackIPAddr, err := transport.ResolveIPAddr(arg)
if err != nil {
return nil, err
}
return transport.DialTCP(&net.TCPAddr{
IP: hijackIPAddr.IP,
Port: int(port),
Zone: hijackIPAddr.Zone,
})
default:
return nil, fmt.Errorf("unknown action %d", action)
}
},
IdleConnTimeout: idleTimeout,
// Disable HTTP2 support? ref: https://github.com/elazarl/goproxy/issues/361
}
proxy.ConnectDial = nil
if basicAuthFunc != nil {
auth.ProxyBasic(proxy, "hysteria client", basicAuthFunc)
}
return proxy, nil
}
type nopLogger struct{}
func (n *nopLogger) Printf(format string, v ...interface{}) {}