/ *
*
* Copyright 2018 gRPC authors .
*
* 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
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an "AS IS" BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*
* /
package transport
import (
"math"
"time"
)
const (
// The default value of flow control window size in HTTP2 spec.
defaultWindowSize = 65535
// The initial window size for flow control.
initialWindowSize = defaultWindowSize // for an RPC
infinity = time . Duration ( math . MaxInt64 )
defaultClientKeepaliveTime = infinity
defaultClientKeepaliveTimeout = 20 * time . Second
defaultMaxStreamsClient = 100
defaultMaxConnectionIdle = infinity
defaultMaxConnectionAge = infinity
defaultMaxConnectionAgeGrace = infinity
defaultServerKeepaliveTime = 2 * time . Hour
defaultServerKeepaliveTimeout = 20 * time . Second
defaultKeepalivePolicyMinTime = 5 * time . Minute
// max window limit set by HTTP2 Specs.
maxWindowSize = math . MaxInt32
// defaultWriteQuota is the default value for number of data
// bytes that each stream can schedule before some of it being
// flushed out.
defaultWriteQuota = 64 * 1024
defaultClientMaxHeaderListSize = uint32 ( 16 << 20 )
defaultServerMaxHeaderListSize = uint32 ( 16 << 20 )
)
// MaxStreamID is the upper bound for the stream ID before the current
// transport gracefully closes and new transport is created for subsequent RPCs.
// This is set to 75% of 2^31-1. Streams are identified with an unsigned 31-bit
// integer. It's exported so that tests can override it.
var MaxStreamID = uint32 ( math . MaxInt32 * 3 / 4 )
