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error should be checked earlier in the hijack function

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Signed-off-by: Shijiang Wei <mountkin@gmail.com>
This commit is contained in:
Shijiang Wei 2015-09-16 20:28:07 +08:00
parent 6f15546f6b
commit f2d978ccf9
1 changed files with 8 additions and 6 deletions
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14
api/client/hijack.go
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@ -156,6 +156,13 @@ func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in io.Rea
req.Host = cli.addr
dial, err := cli.dial()
if err != nil {
if strings.Contains(err.Error(), "connection refused") {
return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker daemon' running on this host?")
}
return err
}
// When we set up a TCP connection for hijack, there could be long periods
// of inactivity (a long running command with no output) that in certain
// network setups may cause ECONNTIMEOUT, leaving the client in an unknown
@ -165,12 +172,7 @@ func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in io.Rea
tcpConn.SetKeepAlive(true)
tcpConn.SetKeepAlivePeriod(30 * time.Second)
}
if err != nil {
if strings.Contains(err.Error(), "connection refused") {
return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker daemon' running on this host?")
}
return err
}
clientconn := httputil.NewClientConn(dial, nil)
defer clientconn.Close()