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package transport
import (
"net/http"
"time"
"gitlab.com/gitlab-org/labkit/correlation"
"gitlab.com/gitlab-org/labkit/tracing"
"gitlab.com/gitlab-org/gitlab/workhorse/internal/version"
)
// Creates a new default transport that has Workhorse's User-Agent header set.
func NewDefaultTransport() http.RoundTripper {
return &DefaultTransport{Next: http.DefaultTransport}
}
// Defines a http.Transport with values that are more restrictive than for
// http.DefaultTransport, they define shorter TLS Handshake, and more
// aggressive connection closing to prevent the connection hanging and reduce
// FD usage
func NewRestrictedTransport(options ...Option) http.RoundTripper {
return &DefaultTransport{Next: newRestrictedTransport(options...)}
}
type DefaultTransport struct {
Next http.RoundTripper
}
func (t DefaultTransport) RoundTrip(req *http.Request) (*http.Response, error) {
req.Header.Set("User-Agent", version.GetUserAgent())
return t.Next.RoundTrip(req)
}
type Option func(*http.Transport)
func WithDisabledCompression() Option {
return func(t *http.Transport) {
t.DisableCompression = true
}
}
func newRestrictedTransport(options ...Option) http.RoundTripper {
t := http.DefaultTransport.(*http.Transport).Clone()
// To avoid keep around TCP connections to http servers we're done with
t.MaxIdleConns = 2
// A stricter timeout for fetching from external sources that can be slow
t.ResponseHeaderTimeout = 30 * time.Second
for _, option := range options {
option(t)
}
return tracing.NewRoundTripper(correlation.NewInstrumentedRoundTripper(t))
}
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