LingAPI/Transmission
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添加单元测试

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This commit is contained in:
驻魂圣使
2024-04-18 22:10:13 +08:00
parent eb471bd8dd
commit cc994a091b
6 changed files with 204 additions and 18 deletions
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5
src/CMakeLists.txt
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@@ -17,7 +17,8 @@ add_library(Transmission
Client.cpp
Transmit.cpp
CharBuff.cpp
"Exception/PrepareDataException.h"
Exception/PrepareDataException.h
)
target_link_libraries(Transmission protobuf proto)
target_include_directories(Transmission PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
target_link_libraries(Transmission protobuf proto lzma)

118
src/Transmit.cpp
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@@ -10,15 +10,17 @@
#include <utility>
#include <transmission.pb.h>
#define DATA_STOP 0x20030507
namespace Transmission {
const int32_t Transmit::DATA_STOP = 0x20030507;
Transmit::Transmit(SOCKET fd, std::string ip) : ip(std::move(ip)), fd(fd) {
}
void Transmit::dataArrives(unsigned char *data, size_t size) {
std::unique_lock<std::mutex> lock(dataMutex);
charBuff.put(data, 0, size);
if (this->packSize < 0) {
if (charBuff.getSize() >= 4) {
//读取下一个数据包的长度
@@ -36,18 +38,19 @@ namespace Transmission {
//数据不够，等待填充数据
return;
}
int32_t magicNumber = (charBuff.get() << 0) + (charBuff.get() << 8) + (charBuff.get() << 16) + (charBuff.get() << 24);
if (magicNumber != DATA_STOP)
throw PrepareDataException("魔数错误");
auto buff = std::shared_ptr<unsigned char>(new unsigned char[this->packSize], [](const unsigned char *p) {
delete[] p;
});
charBuff.get(buff.get(), this->packSize);
int32_t magicNumber = (charBuff.get() << 0) + (charBuff.get() << 8) + (charBuff.get() << 16) + (charBuff.get() << 24);
if (magicNumber != DATA_STOP)
throw PrepareDataException("魔数错误");
DataPackets dataPackets;
if (!dataPackets.ParseFromArray(buff.get(), this->packSize))
throw PrepareDataException("反序列化出错");
this->packSize = -1;
switch (dataPackets.type()) {
//无压缩
case CompressAlgorithm::NOT: {
@@ -79,28 +82,33 @@ namespace Transmission {
std::shared_ptr<unsigned char> Transmit::unLzma(const std::string &str, size_t &size) {
lzma_stream stream = LZMA_STREAM_INIT;
lzma_ret ret = lzma_easy_encoder(&stream, LZMA_PRESET_DEFAULT, LZMA_CHECK_CRC64);
lzma_ret ret = lzma_stream_decoder(&stream, UINT64_MAX, LZMA_CONCATENATED);
if (ret != LZMA_OK)
throw PrepareDataException("LZMA初始化失败！");
// 解压缩数据
stream.next_in = reinterpret_cast<const uint8_t *>(str.data());
stream.avail_in = str.size();
CharBuff buff((int64_t) lzma_stream_buffer_bound(str.size()));
CharBuff buff;
const int defaultSize = 1024;
size_t lastSize = 0;
do {
size_t bufferSize = lzma_stream_buffer_bound(str.size());
auto ptr = std::shared_ptr<unsigned char>(new unsigned char[bufferSize], [](const unsigned char *p) {
while (true) {
//size_t bufferSize = defaultSize;
auto ptr = std::shared_ptr<unsigned char>(new unsigned char[defaultSize], [](const unsigned char *p) {
delete[] p;
});
stream.next_out = reinterpret_cast<uint8_t *>(ptr.get());
stream.avail_out = bufferSize;
stream.avail_out = defaultSize;
ret = lzma_code(&stream, LZMA_FINISH);
if (ret == LZMA_STREAM_END) {
lastSize = stream.total_out - lastSize;
buff.put(ptr.get(), 0, (int64_t) lastSize);
break;
}
if (ret != LZMA_OK)
throw PrepareDataException("LZMA解压缩失败");
lastSize = stream.total_out - lastSize;
buff.put(ptr.get(), 0, (int64_t) lastSize);
} while (ret == LZMA_BUF_ERROR);
if (ret != LZMA_OK && ret != LZMA_STREAM_END)
throw PrepareDataException("LZMA解压缩失败");
}
auto ptr = std::shared_ptr<unsigned char>(new unsigned char[buff.getSize()], [](const unsigned char *p) {
delete[] p;
@@ -109,4 +117,82 @@ namespace Transmission {
buff.get(ptr.get(), buff.getSize());
return ptr;
}
void Transmit::sendData(unsigned char *data, size_t size, int type) {
DataPackets dataPackets;
dataPackets.set_type(type);
std::string byteData(reinterpret_cast<char *>(data), size);
dataPackets.set_data(byteData);
if (size < 64) {
//小于64字节的数据包不压缩
pushData(dataPackets);
} else {
//大于64字节的数据使用lzma压缩后发送
pushLzmaData(dataPackets);
}
}
void Transmit::pushData(unsigned char *data, int32_t size) const {
::send(this->fd, &size, sizeof(int32_t), 0);
::send(this->fd, data, size, 0);
::send(this->fd, &DATA_STOP, sizeof(DATA_STOP), 0);
}
void Transmit::pushData(DataPackets &data) {
data.set_algorithm(CompressAlgorithm::NOT);
size_t pack_size = data.ByteSizeLong();
auto *temp = new unsigned char[pack_size];
data.SerializeToArray(temp, (int) pack_size);
pushData(temp, pack_size);
delete[] temp;
}
void Transmit::pushLzmaData(DataPackets &data) {
// 初始化压缩流
lzma_stream stream = LZMA_STREAM_INIT;
lzma_ret ret = lzma_easy_encoder(&stream, 6, LZMA_CHECK_CRC64); // 压缩级别为 6，使用 CRC64 进行校验
if (ret != LZMA_OK)
throw PrepareDataException("LZMA初始化失败");
CharBuff buff;
size_t lastSize = 0;
stream.next_in = (const uint8_t *) data.data().data();
stream.avail_in = data.data().size();
//size_t maxCompressedSize = lzma_stream_buffer_bound(data.data().size());
const size_t maxCompressedSize = 1024;
while (true) {
auto ptr = std::shared_ptr<unsigned char>(new unsigned char[maxCompressedSize], [](const unsigned char *p) {
delete[] p;
});
stream.next_out = reinterpret_cast<uint8_t *>(ptr.get());
stream.avail_out = maxCompressedSize;
ret = lzma_code(&stream, LZMA_FINISH);
if (ret == LZMA_STREAM_END) {
lastSize = stream.total_out - lastSize;
buff.put(ptr.get(), 0, (int64_t) lastSize);
break;
}
if(ret != LZMA_OK)
throw PrepareDataException("LZMA压缩失败");
lastSize = stream.total_out - lastSize;
buff.put(ptr.get(), 0, (int64_t) lastSize);
}
auto ptr = std::shared_ptr<unsigned char>(new unsigned char[buff.getSize()], [](const unsigned char *p) {
delete[] p;
});
size_t size = buff.getSize();
buff.get(ptr.get(), buff.getSize());
data.set_algorithm(CompressAlgorithm::LZMA);
std::string byteData(reinterpret_cast<char *>(ptr.get()), size);
data.set_data(byteData);
size_t pack_size = data.ByteSizeLong();
auto *temp = new unsigned char[pack_size];
data.SerializeToArray(temp, (int) pack_size);
pushData(temp, pack_size);
delete[] temp;
}
} // Transmission

17
src/Transmit.h
View File

@@ -11,6 +11,7 @@
#include <pcap/socket.h>
#include <memory>
#include "CharBuff.h"
#include "transmission.pb.h"
namespace Transmission {
/// 传输层实现
@@ -23,6 +24,17 @@ namespace Transmission {
int32_t packSize = -1;
std::mutex dataMutex;
private:
/// 无压缩
void pushData(DataPackets &data);
/// lzma压缩后发送
void pushLzmaData(DataPackets &data);
/// 实际发送
virtual void pushData(unsigned char *data, int32_t size) const;
protected:
virtual std::shared_ptr<unsigned char> copyMem(const std::string &str);
@@ -31,11 +43,16 @@ namespace Transmission {
virtual std::shared_ptr<unsigned char> unLzma(const std::string &str, size_t &size);
public:
static const int32_t DATA_STOP;
explicit Transmit(SOCKET fd, std::string ip);
/// 收到来自网络的数据
virtual void dataArrives(unsigned char *data, size_t size);
/// 发送数据
virtual void sendData(unsigned char *data, size_t size, int type = 0);
/// 数据包就绪
/// @param type 数据包类型
/// @param data 解压缩后的数据包