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#include <util/network/sock.h>
#include "http_proxy.h"
#include "http_proxy_ssl.h"
namespace NHttp {
class TAcceptorActor : public NActors::TActor<TAcceptorActor>, public THttpConfig {
public:
using TBase = NActors::TActor<TAcceptorActor>;
const TActorId Owner;
const TActorId Poller;
TIntrusivePtr<TSocketDescriptor> Socket;
NActors::TPollerToken::TPtr PollerToken;
THashSet<TActorId> Connections;
TDeque<THttpIncomingRequestPtr> RecycledRequests;
std::shared_ptr<TPrivateEndpointInfo> Endpoint;
TAcceptorActor(const TActorId& owner, const TActorId& poller)
: NActors::TActor<TAcceptorActor>(&TAcceptorActor::StateInit)
, Owner(owner)
, Poller(poller)
, Socket(new TSocketDescriptor())
{
// for unit tests :(
SetSockOpt(Socket->Socket, SOL_SOCKET, SO_REUSEADDR, (int)true);
#ifdef SO_REUSEPORT
SetSockOpt(Socket->Socket, SOL_SOCKET, SO_REUSEPORT, (int)true);
#endif
}
static constexpr char ActorName[] = "HTTP_ACCEPTOR_ACTOR";
protected:
STFUNC(StateListening) {
switch (ev->GetTypeRewrite()) {
HFunc(NActors::TEvPollerRegisterResult, Handle);
HFunc(NActors::TEvPollerReady, Handle);
HFunc(TEvHttpProxy::TEvHttpConnectionClosed, Handle);
HFunc(TEvHttpProxy::TEvReportSensors, Handle);
}
}
STFUNC(StateInit) {
switch (ev->GetTypeRewrite()) {
HFunc(TEvHttpProxy::TEvAddListeningPort, HandleInit);
}
}
void HandleInit(TEvHttpProxy::TEvAddListeningPort::TPtr event, const NActors::TActorContext& ctx) {
SocketAddressType bindAddress(Socket->Socket.MakeAddress(event->Get()->Address,event->Get()->Port));
Endpoint = std::make_shared<TPrivateEndpointInfo>(event->Get()->CompressContentTypes);
Endpoint->Owner = ctx.SelfID;
Endpoint->Proxy = Owner;
Endpoint->WorkerName = event->Get()->WorkerName;
Endpoint->Secure = event->Get()->Secure;
int err = 0;
if (Endpoint->Secure) {
if (!event->Get()->SslCertificatePem.empty()) {
Endpoint->SecureContext = TSslHelpers::CreateServerContext(event->Get()->SslCertificatePem);
} else {
Endpoint->SecureContext = TSslHelpers::CreateServerContext(event->Get()->CertificateFile, event->Get()->PrivateKeyFile);
}
if (Endpoint->SecureContext == nullptr) {
err = -1;
LOG_WARN_S(ctx, HttpLog, "Failed to construct server security context");
}
}
if (err == 0) {
err = Socket->Socket.Bind(bindAddress.get());
}
TStringBuf schema = Endpoint->Secure ? "https://" : "http://";
if (err == 0) {
err = Socket->Socket.Listen(LISTEN_QUEUE);
if (err == 0) {
LOG_INFO_S(ctx, HttpLog, "Listening on " << schema << bindAddress->ToString());
SetNonBlock(Socket->Socket);
ctx.Send(Poller, new NActors::TEvPollerRegister(Socket, SelfId(), SelfId()));
TBase::Become(&TAcceptorActor::StateListening);
ctx.Send(event->Sender, new TEvHttpProxy::TEvConfirmListen(bindAddress, Endpoint), 0, event->Cookie);
return;
}
}
LOG_WARN_S(ctx, HttpLog, "Failed to listen on " << schema << bindAddress->ToString() << " - retrying...");
ctx.ExecutorThread.Schedule(TDuration::Seconds(1), event.Release());
}
void Die(const NActors::TActorContext& ctx) override {
ctx.Send(Owner, new TEvHttpProxy::TEvHttpAcceptorClosed(ctx.SelfID));
for (const NActors::TActorId& connection : Connections) {
ctx.Send(connection, new NActors::TEvents::TEvPoisonPill());
}
}
void Handle(NActors::TEvPollerRegisterResult::TPtr ev, const NActors::TActorContext& /*ctx*/) {
PollerToken = std::move(ev->Get()->PollerToken);
PollerToken->Request(true, false); // request read polling
}
void Handle(NActors::TEvPollerReady::TPtr, const NActors::TActorContext& ctx) {
for (;;) {
SocketAddressType addr;
std::optional<SocketType> s = Socket->Socket.Accept(addr);
if (!s) {
break;
}
TIntrusivePtr<TSocketDescriptor> socket = new TSocketDescriptor(std::move(s).value());
NActors::IActor* connectionSocket = nullptr;
if (RecycledRequests.empty()) {
connectionSocket = CreateIncomingConnectionActor(Endpoint, socket, addr);
} else {
connectionSocket = CreateIncomingConnectionActor(Endpoint, socket, addr, std::move(RecycledRequests.front()));
RecycledRequests.pop_front();
}
NActors::TActorId connectionId = ctx.Register(connectionSocket);
ctx.Send(Poller, new NActors::TEvPollerRegister(socket, connectionId, connectionId));
Connections.emplace(connectionId);
}
int err = errno;
if (err == EAGAIN || err == EWOULDBLOCK) { // request poller for further connection polling
Y_VERIFY(PollerToken);
PollerToken->Request(true, false);
}
}
void Handle(TEvHttpProxy::TEvHttpConnectionClosed::TPtr event, const NActors::TActorContext&) {
Connections.erase(event->Get()->ConnectionID);
for (auto& req : event->Get()->RecycledRequests) {
req->Clear();
RecycledRequests.push_back(std::move(req));
}
}
void Handle(TEvHttpProxy::TEvReportSensors::TPtr event, const NActors::TActorContext& ctx) {
ctx.Send(event->Forward(Owner));
}
};
NActors::IActor* CreateHttpAcceptorActor(const TActorId& owner, const TActorId& poller) {
return new TAcceptorActor(owner, poller);
}
}
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