确保32位系统支持超过4GB文件下载

src/Http/HttpBody.cpp

@@ -40,7 +40,7 @@ HttpStringBody::HttpStringBody(string str) {
     _str = std::move(str);
 }
 
-ssize_t HttpStringBody::remainSize() {
+int64_t HttpStringBody::remainSize() {
     return _str.size() - _offset;
 }
 
@@ -150,7 +150,7 @@ private:
     std::shared_ptr<char> _map_addr;
 };
 
-ssize_t HttpFileBody::remainSize() {
+int64_t HttpFileBody::remainSize() {
     return _read_to - _file_offset;
 }
 
@@ -205,7 +205,7 @@ HttpMultiFormBody::HttpMultiFormBody(const HttpArgs &args, const string &filePat
     _totalSize = _bodyPrefix.size() + _bodySuffix.size() + _fileBody->remainSize();
 }
 
-ssize_t HttpMultiFormBody::remainSize() {
+int64_t HttpMultiFormBody::remainSize() {
     return _totalSize - _offset;
 }
 
@@ -270,7 +270,7 @@ HttpBufferBody::HttpBufferBody(Buffer::Ptr buffer) {
     _buffer = std::move(buffer);
 }
 
-ssize_t HttpBufferBody::remainSize() {
+int64_t HttpBufferBody::remainSize() {
     return _buffer ? _buffer->size() : 0;
 }
 

src/Http/HttpBody.h

@@ -37,7 +37,7 @@ public:
     /**
      * 剩余数据大小，如果返回-1, 那么就不设置content-length
      */
-    virtual ssize_t remainSize() { return 0;};
+    virtual int64_t remainSize() { return 0;};
 
     /**
      * 读取一定字节数，返回大小可能小于size
@@ -77,7 +77,7 @@ public:
     HttpStringBody(std::string str);
     ~HttpStringBody() override = default;
 
-    ssize_t remainSize() override;
+    int64_t remainSize() override;
     toolkit::Buffer::Ptr readData(size_t size) override ;
 
 private:
@@ -94,7 +94,7 @@ public:
     HttpBufferBody(toolkit::Buffer::Ptr buffer);
     ~HttpBufferBody() override = default;
 
-    ssize_t remainSize() override;
+    int64_t remainSize() override;
     toolkit::Buffer::Ptr readData(size_t size) override;
 
 private:
@@ -123,7 +123,7 @@ public:
      */
     void setRange(uint64_t offset, uint64_t max_size);
 
-    ssize_t remainSize() override;
+    int64_t remainSize() override;
     toolkit::Buffer::Ptr readData(size_t size) override;
     int sendFile(int fd) override;
 
@@ -152,7 +152,7 @@ public:
      */
     HttpMultiFormBody(const HttpArgs &args,const std::string &filePath,const std::string &boundary = "0xKhTmLbOuNdArY");
     virtual ~HttpMultiFormBody(){}
-    ssize_t remainSize() override ;
+    int64_t remainSize() override ;
     toolkit::Buffer::Ptr readData(size_t size) override;
 
 public:
@@ -161,8 +161,8 @@ public:
     static std::string multiFormContentType(const std::string &boundary);
 
 private:
-    size_t _offset = 0;
-    size_t _totalSize;
+    uint64_t _offset = 0;
+    int64_t _totalSize;
     std::string _bodyPrefix;
     std::string _bodySuffix;
     HttpFileBody::Ptr _fileBody;

src/Http/HttpSession.cpp

@@ -519,16 +519,16 @@ void HttpSession::sendResponse(int code,
     GET_CONFIG(uint32_t,keepAliveSec,Http::kKeepAliveSecond);
 
     //body默认为空
-    ssize_t size = 0;
+    int64_t size = 0;
     if (body && body->remainSize()) {
         //有body，获取body大小
         size = body->remainSize();
     }
 
-    if(no_content_length){
-        //http-flv直播是Keep-Alive类型
+    if (no_content_length) {
+        // http-flv直播是Keep-Alive类型
         bClose = false;
-    }else if((size_t) size >= SIZE_MAX || size < 0 ){
+    } else if ((size_t)size >= SIZE_MAX || size < 0) {
         //不固定长度的body，那么发送完body后应该关闭socket，以便浏览器做下载完毕的判断
         bClose = true;
     }
@@ -537,47 +537,47 @@ void HttpSession::sendResponse(int code,
     headerOut.emplace(kDate, dateStr());
     headerOut.emplace(kServer, kServerName);
     headerOut.emplace(kConnection, bClose ? "close" : "keep-alive");
-    if(!bClose){
+    if (!bClose) {
         string keepAliveString = "timeout=";
         keepAliveString += to_string(keepAliveSec);
         keepAliveString += ", max=100";
-        headerOut.emplace(kKeepAlive,std::move(keepAliveString));
+        headerOut.emplace(kKeepAlive, std::move(keepAliveString));
     }
 
-    if(!_origin.empty()){
+    if (!_origin.empty()) {
         //设置跨域
-        headerOut.emplace(kAccessControlAllowOrigin,_origin);
+        headerOut.emplace(kAccessControlAllowOrigin, _origin);
         headerOut.emplace(kAccessControlAllowCredentials, "true");
     }
 
-    if(!no_content_length && size >= 0 && (size_t)size < SIZE_MAX){
+    if (!no_content_length && size >= 0 && (size_t)size < SIZE_MAX) {
         //文件长度为固定值,且不是http-flv强制设置Content-Length
         headerOut[kContentLength] = to_string(size);
     }
 
-    if(size && !pcContentType){
+    if (size && !pcContentType) {
         //有body时，设置缺省类型
         pcContentType = "text/plain";
     }
 
-    if((size || no_content_length) && pcContentType){
+    if ((size || no_content_length) && pcContentType) {
         //有body时，设置文件类型
         string strContentType = pcContentType;
         strContentType += "; charset=";
         strContentType += charSet;
-        headerOut.emplace(kContentType,std::move(strContentType));
+        headerOut.emplace(kContentType, std::move(strContentType));
     }
 
     //发送http头
     string str;
     str.reserve(256);
-    str += "HTTP/1.1 " ;
+    str += "HTTP/1.1 ";
     str += to_string(code);
     str += ' ';
-    str += getHttpStatusMessage(code) ;
+    str += getHttpStatusMessage(code);
     str += "\r\n";
     for (auto &pr : header) {
-        str += pr.first ;
+        str += pr.first;
         str += ": ";
         str += pr.second;
         str += "\r\n";
@@ -586,16 +586,16 @@ void HttpSession::sendResponse(int code,
     SockSender::send(std::move(str));
     _ticker.resetTime();
 
-    if(!size){
+    if (!size) {
         //没有body
-        if(bClose){
+        if (bClose) {
             shutdown(SockException(Err_shutdown,StrPrinter << "close connection after send http header completed with status code:" << code));
         }
         return;
     }
 
     if (typeid(*this) == typeid(HttpSession) && !body->sendFile(getSock()->rawFD())) {
-        //http支持sendfile优化
+        // http支持sendfile优化
         return;
     }
 
@@ -607,9 +607,7 @@ void HttpSession::sendResponse(int code,
 
     //发送http body
     AsyncSenderData::Ptr data = std::make_shared<AsyncSenderData>(shared_from_this(), body, bClose);
-    getSock()->setOnFlush([data]() {
-        return AsyncSender::onSocketFlushed(data);
-    });
+    getSock()->setOnFlush([data]() { return AsyncSender::onSocketFlushed(data); });
     AsyncSender::onSocketFlushed(data);
 }