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https://github.com/cwinfo/yggdrasil-go.git
synced 2024-11-26 16:31:41 +00:00
properly fix the memory errors, it was caused by a function returning and PutBytes-ing a buffer before a worker had a chance to decrypt the buffer, so it would GetBytes the same buffer by dumb luck and then get an illegal overlap
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@ -199,7 +199,7 @@ func (c *Conn) Read(b []byte) (int, error) {
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}
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// Decrypt the packet
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bs, isOK := crypto.BoxOpen(&sinfo.sharedSesKey, p.Payload, &p.Nonce)
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defer util.PutBytes(bs)
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defer util.PutBytes(bs) // FIXME commenting this out leads to illegal buffer reuse, this implies there's a memory error somewhere and that this is just flooding things out of the finite pool of old slices that get reused
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// Check if we were unable to decrypt the packet for some reason and
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// return an error if we couldn't
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if !isOK {
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@ -223,11 +223,7 @@ func (c *Conn) Read(b []byte) (int, error) {
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case <-timer.C:
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return 0, ConnError{errors.New("Timeout"), true, false}
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}
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select { // Wait for worker to return
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case <-done:
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case <-timer.C:
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return 0, ConnError{errors.New("Timeout"), true, false}
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}
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<-done // Wait for the worker to finish, failing this can cause memory errors (util.[Get||Put]Bytes stuff)
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// Something went wrong in the session worker so abort
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if err != nil {
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return 0, err
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@ -270,7 +266,6 @@ func (c *Conn) Write(b []byte) (bytesWritten int, err error) {
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return 0, errors.New("search failed")
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}
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}
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// defer util.PutBytes(b)
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var packet []byte
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done := make(chan struct{})
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workerFunc := func() {
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@ -294,11 +289,7 @@ func (c *Conn) Write(b []byte) (bytesWritten int, err error) {
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case <-timer.C:
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return 0, ConnError{errors.New("Timeout"), true, false}
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}
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select { // Wait for worker to return
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case <-done:
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case <-timer.C:
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return 0, ConnError{errors.New("Timeout"), true, false}
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}
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<-done // Wait for the worker to finish, failing this can cause memory errors (util.[Get||Put]Bytes stuff)
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// Give the packet to the router
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sinfo.core.router.out(packet)
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// Finally return the number of bytes we wrote
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@ -341,7 +341,7 @@ func (r *router) handleTraffic(packet []byte) {
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return
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}
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select {
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case sinfo.recv <- &p: // FIXME ideally this should be FIFO
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case sinfo.recv <- &p: // FIXME ideally this should be front drop
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default:
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util.PutBytes(p.Payload)
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}
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