Fix:big pkg and hessian2

go.mod

 module github.com/apache/dubbo-go
 
 require (
-	github.com/dubbogo/getty v0.0.0-20190607120257-8b0e100a88af // indirect
-	github.com/dubbogo/hessian2 v0.0.0-20190607144249-afb8cbfad2cb // indirect
+	github.com/dubbogo/getty v1.0.7
+	github.com/dubbogo/hessian2 v1.0.0
 	github.com/pkg/errors v0.8.1
 	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec
 	github.com/stretchr/testify v1.3.0

go.sum

 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dubbogo/getty v0.0.0-20190607120257-8b0e100a88af/go.mod h1:cRMSuoCmwc5lULFFnYZTxyCfZhObmRTNbS7XRnPNHSo=
-github.com/dubbogo/hessian2 v0.0.0-20190607144249-afb8cbfad2cb/go.mod h1:XFGDn4oSZX26zkcfhkM/fCJrOqwQJxk/xgWW1KMJBKM=
+github.com/dubbogo/getty v1.0.7 h1:5Hg+JwXyCKm9Yr4yJkm98ahhnoa8c2h6br5QJxwQ+YU=
+github.com/dubbogo/getty v1.0.7/go.mod h1:cRMSuoCmwc5lULFFnYZTxyCfZhObmRTNbS7XRnPNHSo=
+github.com/dubbogo/hessian2 v1.0.0 h1:KM7BKAUZ+2sjv1nAV9JwJNPMK0T+sHYiSe7Gls1GFS4=
+github.com/dubbogo/hessian2 v1.0.0/go.mod h1:XFGDn4oSZX26zkcfhkM/fCJrOqwQJxk/xgWW1KMJBKM=
+github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -21,9 +25,11 @@ go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/
 go.uber.org/zap v1.10.0 h1:ORx85nbTijNz8ljznvCMR1ZBIPKFn3jQrag10X2AsuM=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20190320064053-1272bf9dcd53 h1:kcXqo9vE6fsZY5X5Rd7R1l7fTgnWaDCVmln65REefiE=
 golang.org/x/net v0.0.0-20190320064053-1272bf9dcd53/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

protocol/dubbo/codec.go

@@ -25,7 +25,7 @@ import (
 )
 
 import (
-	hessian "github.com/dubbogo/hessian2"
+	"github.com/dubbogo/hessian2"
 	perrors "github.com/pkg/errors"
 )
 
@@ -88,10 +88,12 @@ func (p *DubboPackage) Unmarshal(buf *bytes.Buffer, opts ...interface{}) error {
 			return perrors.Errorf("opts[0] is not of type *Client")
 		}
 
-		p.Body = client.GetPendingResponse(SequenceType(p.Header.ID)).reply
-		if p.Body == nil {
+		pendingRsp := client.GetPendingResponse(SequenceType(p.Header.ID))
+		if pendingRsp == nil {
 			return perrors.Errorf("client.GetPendingResponse(%v) = nil", p.Header.ID)
 		}
+		response := &hessian.Response{RspObj: pendingRsp.reply}
+		p.Body = response
 	}
 
 	if p.Header.Type&hessian.PackageHeartbeat != 0x00 {

protocol/dubbo/readwriter.go

@@ -24,7 +24,7 @@ import (
 
 import (
 	"github.com/dubbogo/getty"
-	hessian "github.com/dubbogo/hessian2"
+	"github.com/dubbogo/hessian2"
 	perrors "github.com/pkg/errors"
 )
 import (
@@ -63,7 +63,9 @@ func (p *RpcClientPackageHandler) Read(ss getty.Session, data []byte) (interface
 		return nil, 0, perrors.WithStack(err)
 	}
 
-	return pkg, len(data), nil
+	pkg.Err = pkg.Body.(*hessian.Response).Exception
+	pkg.Body = pkg.Body.(*hessian.Response).RspObj
+	return pkg, hessian.HEADER_LENGTH + pkg.Header.BodyLen, nil
 }
 
 func (p *RpcClientPackageHandler) Write(ss getty.Session, pkg interface{}) error {
@@ -147,7 +149,7 @@ func (p *RpcServerPackageHandler) Read(ss getty.Session, data []byte) (interface
 		}
 	}
 
-	return pkg, len(data), nil
+	return pkg, hessian.HEADER_LENGTH + pkg.Header.BodyLen, nil
 }
 
 func (p *RpcServerPackageHandler) Write(ss getty.Session, pkg interface{}) error {