1. 导出函数声明使用__stdcall修饰。 2. 接收函数兼容接收不带消息头的数据。

FreemudAPI/FreemudAPI.cpp

@@ -23,7 +23,7 @@
 			isOk = false;
 
 extern "C" {
-	__declspec(dllexport) int FMGetResponse(const char* req, char* rsp, unsigned int byteSize)
+	__declspec(dllexport) int __stdcall FMGetResponse(const char* req, char* rsp, unsigned int byteSize)
 	{
 		WSADATA wsa;
 		SOCKET _socket;

FreemudAPI/recv.h

@@ -44,17 +44,27 @@ int Recv(SOCKET socket, char *ptr, unsigned int byteSize)
 		memcpy(recvBuf+totalLen, tempBuf, tempLen);					// 临时数据拷贝到接收数据
 		totalLen += tempLen;
 
+//！ 如果需要接受消息头
 #ifdef NeedSocketHeaderRecv
-		if(needLen == -1 && totalLen >= sizeof(FMSOCKHEADER)) {		// 如果消息头接收完成
+		if(needLen == -1 && totalLen >= sizeof(FMSOCKHEADER)) {		// 消息头接收完成
 			FMSOCKHEADER header = {0,0,0};
 			memcpy(&header, recvBuf, sizeof(FMSOCKHEADER));
 			if(header.flag != FMHEADERFLAG) {
+
+//! 如果兼容接收没有消息头或消息头不对的数据，则不终止程序
+#ifdef NoHeaderCompatible
+				needLen = totalLen;
+				dataLen = totalLen;
+#else	// NoHeaderCompatible
 				delete[] recvBuf;
 				delete[] tempBuf;
 				return FMError_IncorrectHeader.Code();				// 消息头不符
+#endif	// NoHeaderCompatible
+
 			} else {
 				needLen = header.len + sizeof(FMSOCKHEADER);		// 设置实际需要接收长度
 				dataLen = header.len;
+			}
 
 			if (byteSize < dataLen) {							// 判断接收Buffer长度是否足够
 				Log("Error. Buffer overflow, Except size: %d, Actual size: %d", byteSize, dataLen);
@@ -63,8 +73,7 @@ int Recv(SOCKET socket, char *ptr, unsigned int byteSize)
 				return FMError_BufferOverflow.Code();
 			}
 		}
-		}
-#else
+#else	// NeedSocketHeaderRecv
 		needLen = totalLen;
 		dataLen = totalLen;
 		if (byteSize < dataLen) {									// 判断接收Buffer长度是否足够
@@ -72,14 +81,10 @@ int Recv(SOCKET socket, char *ptr, unsigned int byteSize)
 			delete[] tempBuf;
 			return FMError_BufferOverflow.Code();
 		}
-#endif
+#endif	// NeedSocketHeaderRecv
 	}
 	
-#ifdef NeedSocketHeaderRecv
-	memcpy(ptr, recvBuf+sizeof(FMSOCKHEADER), dataLen);
-#else
-	memcpy(ptr, recvBuf, needLen);
-#endif
+	memcpy(ptr, recvBuf+needLen-dataLen, needLen);
 	
 	delete[] recvBuf;
 	delete[] tempBuf;

FreemudAPI/stdafx.h

@@ -28,12 +28,9 @@ const int MAX_SIZE = 4096;
 const int sendTimeOut = 0.5 * 60 * 1000;
 const int recvTimeOut = 2 * 60 * 1000;
 
-#ifndef NeedSocketHeaderSend
 #define NeedSocketHeaderSend
-#endif
-#ifndef NeedSocketHeaderRecv
 #define NeedSocketHeaderRecv
-#endif
+#define NoHeaderCompatible			// 是否兼容接收没有消息头的数据
 
 static const Freemud::Error FMError_Success(100, "Success.");
 static const Freemud::Error FMError_ConnectClosed(0, "Connection closed.");

test/test.cpp

@@ -5,10 +5,8 @@
 #include <string>
 #include <fstream>
 
-typedef int (*FMGetResponse)(const char* req, char* rsp, unsigned int byteSize);
+typedef int (__stdcall *FMGetResponse)(const char* req, char* rsp, unsigned int byteSize);
 
-		const unsigned int outSize = 1024*1024+1;
-		char out[outSize] = { 0 };
 int _tmain(int argc, _TCHAR* argv[])
 {
 	HMODULE hdll = LoadLibraryA("FreemudAPI.dll");
@@ -73,9 +71,12 @@ int _tmain(int argc, _TCHAR* argv[])
 		}
 		printf("Get in data: %s\n", inStr.data());
 		
-		fmFunc(inStr.data(), out, outSize);
+		const unsigned int outSize = 1024*100+1;
+		char out[outSize] = { 0 };
+		int ret = fmFunc(inStr.c_str(), out, outSize);
 
 		printf("========================================================================\n");
+		printf("retcode: %d", ret);
 		printf("\n%s\n", out);
 		printf("\n======================================================================\n");
 	}while(true);