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/*
* Copyright 2010 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/socket_stream.h"
#include "rtc_base/checks.h"
#include "rtc_base/socket.h"
namespace rtc {
SocketStream::SocketStream(Socket* socket) : socket_(nullptr) {
Attach(socket);
}
SocketStream::~SocketStream() {
delete socket_;
}
void SocketStream::Attach(Socket* socket) {
if (socket_)
delete socket_;
socket_ = socket;
if (socket_) {
socket_->SignalConnectEvent.connect(this, &SocketStream::OnConnectEvent);
socket_->SignalReadEvent.connect(this, &SocketStream::OnReadEvent);
socket_->SignalWriteEvent.connect(this, &SocketStream::OnWriteEvent);
socket_->SignalCloseEvent.connect(this, &SocketStream::OnCloseEvent);
}
}
Socket* SocketStream::Detach() {
Socket* socket = socket_;
if (socket_) {
socket_->SignalConnectEvent.disconnect(this);
socket_->SignalReadEvent.disconnect(this);
socket_->SignalWriteEvent.disconnect(this);
socket_->SignalCloseEvent.disconnect(this);
socket_ = nullptr;
}
return socket;
}
StreamState SocketStream::GetState() const {
RTC_DCHECK(socket_ != nullptr);
switch (socket_->GetState()) {
case Socket::CS_CONNECTED:
return SS_OPEN;
case Socket::CS_CONNECTING:
return SS_OPENING;
case Socket::CS_CLOSED:
default:
return SS_CLOSED;
}
}
StreamResult SocketStream::Read(void* buffer,
size_t buffer_len,
size_t* read,
int* error) {
RTC_DCHECK(socket_ != nullptr);
int result = socket_->Recv(buffer, buffer_len, nullptr);
if (result < 0) {
if (socket_->IsBlocking())
return SR_BLOCK;
if (error)
*error = socket_->GetError();
return SR_ERROR;
}
if ((result > 0) || (buffer_len == 0)) {
if (read)
*read = result;
return SR_SUCCESS;
}
return SR_EOS;
}
StreamResult SocketStream::Write(const void* data,
size_t data_len,
size_t* written,
int* error) {
RTC_DCHECK(socket_ != nullptr);
int result = socket_->Send(data, data_len);
if (result < 0) {
if (socket_->IsBlocking())
return SR_BLOCK;
if (error)
*error = socket_->GetError();
return SR_ERROR;
}
if (written)
*written = result;
return SR_SUCCESS;
}
void SocketStream::Close() {
RTC_DCHECK(socket_ != nullptr);
socket_->Close();
}
void SocketStream::OnConnectEvent(Socket* socket) {
RTC_DCHECK(socket == socket_);
SignalEvent(this, SE_OPEN | SE_READ | SE_WRITE, 0);
}
void SocketStream::OnReadEvent(Socket* socket) {
RTC_DCHECK(socket == socket_);
SignalEvent(this, SE_READ, 0);
}
void SocketStream::OnWriteEvent(Socket* socket) {
RTC_DCHECK(socket == socket_);
SignalEvent(this, SE_WRITE, 0);
}
void SocketStream::OnCloseEvent(Socket* socket, int err) {
RTC_DCHECK(socket == socket_);
SignalEvent(this, SE_CLOSE, err);
}
} // namespace rtc
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