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doc(netx): reference issue mentioning future improvements (#802)

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See https://github.com/ooni/probe/issues/2121#issuecomment-1147424810
This commit is contained in:
Simone Basso 2022-06-06 15:16:30 +02:00 • committed by GitHub
commit 57e207e644
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4 changed files with 20 additions and 8 deletions
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17
internal/engine/netx/http.go
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@ -14,12 +14,15 @@ import (
// NewHTTPTransport creates a new HTTPRoundTripper from the given Config.
func NewHTTPTransport(config Config) model.HTTPTransport {
if config.Dialer == nil {
// TODO(https://github.com/ooni/probe/issues/2121#issuecomment-1147424810)
config.Dialer = NewDialer(config)
}
if config.TLSDialer == nil {
// TODO(https://github.com/ooni/probe/issues/2121#issuecomment-1147424810)
config.TLSDialer = NewTLSDialer(config)
}
if config.QUICDialer == nil {
// TODO(https://github.com/ooni/probe/issues/2121#issuecomment-1147424810)
config.QUICDialer = NewQUICDialer(config)
}
tInfo := allTransportsInfo[config.HTTP3Enabled]
@ -30,7 +33,8 @@ func NewHTTPTransport(config Config) model.HTTPTransport {
TLSDialer: config.TLSDialer,
TLSConfig: config.TLSConfig,
})
// TODO(bassosimone): I am not super convinced by this code because it
// TODO(https://github.com/ooni/probe/issues/2121#issuecomment-1147424810): I am
// not super convinced by this code because it
// seems we're currently counting bytes twice in some cases. I think we
// should review how we're counting bytes and using netx currently.
txp = config.ByteCounter.MaybeWrapHTTPTransport(txp) // WAI with ByteCounter == nil
@ -46,7 +50,7 @@ type httpTransportInfo struct {
var allTransportsInfo = map[bool]httpTransportInfo{
false: {
Factory: newSystemTransport,
Factory: newHTTPTransport,
TransportName: "tcp",
},
true: {
@ -56,6 +60,8 @@ var allTransportsInfo = map[bool]httpTransportInfo{
}
// httpTransportConfig contains configuration for constructing an HTTPTransport.
//
// All the fields in this structure MUST be initialized.
type httpTransportConfig struct {
Dialer model.Dialer
Logger model.Logger
@ -66,13 +72,10 @@ type httpTransportConfig struct {
// newHTTP3Transport creates a new HTTP3Transport instance.
func newHTTP3Transport(config httpTransportConfig) model.HTTPTransport {
// Rationale for using NoLogger here: previously this code did
// not use a logger as well, so it's fine to keep it as is.
return netxlite.NewHTTP3Transport(config.Logger, config.QUICDialer, config.TLSConfig)
}
// newSystemTransport creates a new "system" HTTP transport. That is a transport
// using the Go standard library with custom dialer and TLS dialer.
func newSystemTransport(config httpTransportConfig) model.HTTPTransport {
// newHTTPTransport creates a new "system" HTTP transport.
func newHTTPTransport(config httpTransportConfig) model.HTTPTransport {
return netxlite.NewHTTPTransport(config.Logger, config.Dialer, config.TLSDialer)
}