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* Avoid using single topic from multiple tests * Fix KeepAlive error handling test stability
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| // Copyright 2019 The mqtt-go 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 filteredpipe | ||
|
|
||
| import ( | ||
| "io" | ||
| ) | ||
|
|
||
| // DetectAndClosePipe creates pair of filtered pipe. | ||
| // Handler is called on each Write and determine to close the connection. | ||
| func DetectAndClosePipe(h0, h1 func([]byte) bool) (io.ReadWriteCloser, io.ReadWriteCloser) { | ||
| ch0 := make(chan []byte, 1000) | ||
| ch1 := make(chan []byte, 1000) | ||
| return &detectAndCloseConn{ | ||
| baseFilterConn: &baseFilterConn{ | ||
| rCh: ch0, | ||
| wCh: ch1, | ||
| handler: h0, | ||
| closed: make(chan struct{}), | ||
| }, | ||
| }, &detectAndCloseConn{ | ||
| baseFilterConn: &baseFilterConn{ | ||
| rCh: ch1, | ||
| wCh: ch0, | ||
| handler: h1, | ||
| closed: make(chan struct{}), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| type detectAndCloseConn struct { | ||
| *baseFilterConn | ||
| } | ||
|
|
||
| func (c *detectAndCloseConn) Write(data []byte) (n int, err error) { | ||
| if c.handler(data) { | ||
| c.closeOnce.Do(func() { close(c.closed) }) | ||
| return 0, io.ErrClosedPipe | ||
| } | ||
| select { | ||
| case <-c.closed: | ||
| return 0, io.ErrClosedPipe | ||
| default: | ||
| } | ||
| cp := append([]byte{}, data...) | ||
| select { | ||
| case <-c.closed: | ||
| return 0, io.ErrClosedPipe | ||
| case c.wCh <- cp: | ||
| } | ||
| return len(cp), nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| // Copyright 2019 The mqtt-go 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 filteredpipe | ||
|
|
||
| import ( | ||
| "io" | ||
| "sync" | ||
| ) | ||
|
|
||
| // DetectAndDropPipe creates pair of filtered pipe. | ||
| // Handler is called on each Write and determine to drop the remaining data. | ||
| func DetectAndDropPipe(h0, h1 func([]byte) bool) (io.ReadWriteCloser, io.ReadWriteCloser) { | ||
| ch0 := make(chan []byte, 1000) | ||
| ch1 := make(chan []byte, 1000) | ||
| return &detectAndDropConn{ | ||
| baseFilterConn: &baseFilterConn{ | ||
| rCh: ch0, | ||
| wCh: ch1, | ||
| handler: h0, | ||
| closed: make(chan struct{}), | ||
| }, | ||
| dropping: make(chan struct{}), | ||
| }, &detectAndDropConn{ | ||
| baseFilterConn: &baseFilterConn{ | ||
| rCh: ch1, | ||
| wCh: ch0, | ||
| handler: h1, | ||
| closed: make(chan struct{}), | ||
| }, | ||
| dropping: make(chan struct{}), | ||
| } | ||
| } | ||
|
|
||
| type detectAndDropConn struct { | ||
| *baseFilterConn | ||
| dropping chan struct{} | ||
| dropOnce sync.Once | ||
| } | ||
|
|
||
| func (c *detectAndDropConn) Write(data []byte) (n int, err error) { | ||
| if c.handler(data) { | ||
| c.dropOnce.Do(func() { close(c.dropping) }) | ||
| } | ||
| select { | ||
| case <-c.closed: | ||
| return 0, io.ErrClosedPipe | ||
| case <-c.dropping: | ||
| return len(data), nil | ||
| default: | ||
| } | ||
| cp := append([]byte{}, data...) | ||
| select { | ||
| case <-c.closed: | ||
| return 0, io.ErrClosedPipe | ||
| case c.wCh <- cp: | ||
| } | ||
| return len(cp), nil | ||
| } |
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