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// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package utils
import (
"crypto/tls"
"net"
"net/http"
"time"
)
const (
connectTimeout = 3 * time.Second
requestTimeout = 30 * time.Second
)
// HttpClient returns a variation the default implementation of Client.
// It uses a Transport with the same settings as the default Transport
// but with the following modifications:
// - shorter timeout for dial and TLS handshake (defined as constant
// "connectTimeout")
// - timeout for the end-to-end request (defined as constant
// "requestTimeout")
// - skipping server certificate check if specified in "config.json"
// via "ServiceSettings.EnableInsecureOutgoingConnections"
func HttpClient() *http.Client {
if Cfg.ServiceSettings.EnableInsecureOutgoingConnections != nil && *Cfg.ServiceSettings.EnableInsecureOutgoingConnections {
return insecureHttpClient
}
return secureHttpClient
}
var (
secureHttpClient = createHttpClient(false)
insecureHttpClient = createHttpClient(true)
)
func createHttpClient(enableInsecureConnections bool) *http.Client {
client := &http.Client{
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: connectTimeout,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: connectTimeout,
ExpectContinueTimeout: 1 * time.Second,
TLSClientConfig: &tls.Config{
InsecureSkipVerify: enableInsecureConnections,
},
},
Timeout: requestTimeout,
}
return client
}
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