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Fix TLS from environment variables in client

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A recent change accidently caused any TLS configuration in FromEnv to be
ignored. This change alters WithHost to create a new http client only if
one doesn't already exist, and otherwise applies the logic to the
transport on the existing client. This preserves the TLS configuration
that might already be on the client.

Signed-off-by: Drew Erny <drew.erny@docker.com>
This commit is contained in:
Drew Erny 2018-02-09 15:10:58 -08:00
parent 2d97f5e780
commit 80904e9571
1 changed files with 14 additions and 15 deletions
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29
client/client.go
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@ -133,23 +133,15 @@ func FromEnv(c *Client) error {
},
CheckRedirect: CheckRedirect,
}
WithHTTPClient(httpClient)(c)
}
host := os.Getenv("DOCKER_HOST")
if host != "" {
var err error
// WithHost will create an API client if it doesn't exist
if err := WithHost(host)(c); err != nil {
return err
}
httpClient, err = defaultHTTPClient(host)
if err != nil {
return err
}
}
if httpClient != nil {
if err := WithHTTPClient(httpClient)(c); err != nil {
return err
}
}
version := os.Getenv("DOCKER_API_VERSION")
if version != "" {
@ -167,7 +159,8 @@ func WithVersion(version string) func(*Client) error {
}
}
// WithHost overrides the client host with the specified one
// WithHost overrides the client host with the specified one, creating a new
// http client if one doesn't exist
func WithHost(host string) func(*Client) error {
return func(c *Client) error {
hostURL, err := ParseHostURL(host)
@ -178,11 +171,17 @@ func WithHost(host string) func(*Client) error {
c.proto = hostURL.Scheme
c.addr = hostURL.Host
c.basePath = hostURL.Path
client, err := defaultHTTPClient(host)
if err != nil {
return err
if c.client == nil {
client, err := defaultHTTPClient(host)
if err != nil {
return err
}
return WithHTTPClient(client)(c)
}
return WithHTTPClient(client)(c)
if transport, ok := c.client.Transport.(*http.Transport); ok {
return sockets.ConfigureTransport(transport, c.proto, c.addr)
}
return fmt.Errorf("cannot apply host to http transport")
}
}