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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
// Original authors: ekr@rtfm.com; ryan@tokbox.com
#ifndef MTRANSPORT_DUMMY_SOCKET_H_
#define MTRANSPORT_DUMMY_SOCKET_H_
#include "nr_socket_prsock.h"
extern "C" {
#include "transport_addr.h"
}
#include "mediapacket.h"
#include "mozilla/UniquePtr.h"
#define GTEST_HAS_RTTI 0
#include "gtest/gtest.h"
#include "gtest_utils.h"
namespace mozilla {
static UniquePtr<MediaPacket> merge(UniquePtr<MediaPacket> a,
UniquePtr<MediaPacket> b) {
if (a && a->len() && b && b->len()) {
UniquePtr<uint8_t[]> data(new uint8_t[a->len() + b->len()]);
memcpy(data.get(), a->data(), a->len());
memcpy(data.get() + a->len(), b->data(), b->len());
UniquePtr<MediaPacket> merged(new MediaPacket);
merged->Take(std::move(data), a->len() + b->len());
return merged;
}
if (a && a->len()) {
return a;
}
if (b && b->len()) {
return b;
}
return nullptr;
}
class DummySocket : public NrSocketBase {
public:
DummySocket()
: writable_(UINT_MAX),
write_buffer_(nullptr),
readable_(UINT_MAX),
read_buffer_(nullptr),
cb_(nullptr),
cb_arg_(nullptr),
self_(nullptr) {}
// the nr_socket APIs
virtual int create(nr_transport_addr* addr) override { return 0; }
virtual int sendto(const void* msg, size_t len, int flags,
const nr_transport_addr* to) override {
MOZ_CRASH();
return 0;
}
virtual int recvfrom(void* buf, size_t maxlen, size_t* len, int flags,
nr_transport_addr* from) override {
MOZ_CRASH();
return 0;
}
virtual int getaddr(nr_transport_addr* addrp) override {
MOZ_CRASH();
return 0;
}
virtual void close() override {}
virtual int connect(const nr_transport_addr* addr) override {
nr_transport_addr_copy(&connect_addr_, addr);
return 0;
}
virtual int listen(int backlog) override { return 0; }
virtual int accept(nr_transport_addr* addrp, nr_socket** sockp) override {
return 0;
}
virtual int write(const void* msg, size_t len, size_t* written) override {
size_t to_write = std::min(len, writable_);
if (to_write) {
UniquePtr<MediaPacket> msgbuf(new MediaPacket);
msgbuf->Copy(static_cast<const uint8_t*>(msg), to_write);
write_buffer_ = merge(std::move(write_buffer_), std::move(msgbuf));
}
*written = to_write;
return 0;
}
virtual int read(void* buf, size_t maxlen, size_t* len) override {
if (!read_buffer_.get()) {
return R_WOULDBLOCK;
}
size_t to_read = std::min(read_buffer_->len(), std::min(maxlen, readable_));
memcpy(buf, read_buffer_->data(), to_read);
*len = to_read;
if (to_read < read_buffer_->len()) {
MediaPacket* newPacket = new MediaPacket;
newPacket->Copy(read_buffer_->data() + to_read,
read_buffer_->len() - to_read);
read_buffer_.reset(newPacket);
} else {
read_buffer_.reset();
}
return 0;
}
// Implementations of the async_event APIs.
// These are no-ops because we handle scheduling manually
// for test purposes.
virtual int async_wait(int how, NR_async_cb cb, void* cb_arg, char* function,
int line) override {
EXPECT_EQ(nullptr, cb_);
cb_ = cb;
cb_arg_ = cb_arg;
return 0;
}
virtual int cancel(int how) override {
cb_ = nullptr;
cb_arg_ = nullptr;
return 0;
}
// Read/Manipulate the current state.
void CheckWriteBuffer(const uint8_t* data, size_t len) {
if (!len) {
EXPECT_EQ(nullptr, write_buffer_.get());
} else {
EXPECT_NE(nullptr, write_buffer_.get());
ASSERT_EQ(len, write_buffer_->len());
ASSERT_EQ(0, memcmp(data, write_buffer_->data(), len));
}
}
void ClearWriteBuffer() { write_buffer_.reset(); }
void SetWritable(size_t val) { writable_ = val; }
void FireWritableCb() {
NR_async_cb cb = cb_;
void* cb_arg = cb_arg_;
cb_ = nullptr;
cb_arg_ = nullptr;
cb(this, NR_ASYNC_WAIT_WRITE, cb_arg);
}
void SetReadBuffer(const uint8_t* data, size_t len) {
EXPECT_EQ(nullptr, write_buffer_.get());
read_buffer_.reset(new MediaPacket);
read_buffer_->Copy(data, len);
}
void ClearReadBuffer() { read_buffer_.reset(); }
void SetReadable(size_t val) { readable_ = val; }
nr_socket* get_nr_socket() {
if (!self_) {
int r = nr_socket_create_int(this, vtbl(), &self_);
AddRef();
if (r) return nullptr;
}
return self_;
}
nr_transport_addr* get_connect_addr() { return &connect_addr_; }
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DummySocket, override);
private:
~DummySocket() = default;
DISALLOW_COPY_ASSIGN(DummySocket);
size_t writable_; // Amount we allow someone to write.
UniquePtr<MediaPacket> write_buffer_;
size_t readable_; // Amount we allow someone to read.
UniquePtr<MediaPacket> read_buffer_;
NR_async_cb cb_;
void* cb_arg_;
nr_socket* self_;
nr_transport_addr connect_addr_;
};
} // namespace mozilla
#endif
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