NetServices: add the HttpSerializer helper to help serialize requests

Change-Id: Ide1e2d387884ce4cf2d406057960cd0732d61f38

headers/private/netservices2/HttpRequest.h

@@ -25,6 +25,8 @@ namespace Network {
 
 
 class BHttpFields;
+class HttpBuffer;
+class HttpSerializer;
 
 
 class BHttpMethod {
@@ -134,9 +136,11 @@ public:
 
 private:
 	friend class BHttpSession;
+	friend class HttpSerializer;
 	struct Data;
 
 			bool					RewindBody() noexcept;
+			void					SerializeHeaderTo(HttpBuffer& buffer) const;
 
 	std::unique_ptr<Data>			fData;
 };

headers/private/netservices2/HttpStream.h

@@ -1,72 +0,0 @@
-/*
- * Copyright 2022 Haiku Inc. All rights reserved.
- * Distributed under the terms of the MIT License.
- */
-
-#ifndef _HTTP_STREAM_H_
-#define _HTTP_STREAM_H_
-
-#include <functional>
-#include <memory>
-#include <optional>
-#include <vector>
-
-class BDataIO;
-class BMallocIO;
-class BString;
-
-
-namespace BPrivate {
-
-namespace Network {
-
-class BHttpFields;
-class BHttpRequest;
-class BHttpStatus;
-class HttpBuffer;
-
-
-class BAbstractDataStream {
-public:
-	struct TransferInfo {
-		off_t currentBytesWritten;
-		off_t totalBytesWritten;
-		off_t totalSize;
-		bool complete;
-	};
-
-	virtual	TransferInfo			Transfer(BDataIO*) = 0;
-
-protected:
-			ssize_t					BufferData(BDataIO* source, size_t maxSize);
-
-			std::vector<std::byte>	fBuffer;
-};
-
-
-class BHttpRequestStream : public BAbstractDataStream {
-public:
-							BHttpRequestStream(const BHttpRequest& request);
-							~BHttpRequestStream();
-
-	virtual	TransferInfo	Transfer(BDataIO* target) override;
-
-private:
-	off_t					fRemainingHeaderSize = 0;
-	BDataIO*				fBody = nullptr;
-	off_t					fTotalBodySize = 0;
-	off_t					fBufferedBodySize = 0;
-	off_t					fTransferredBodySize = 0;
-};
-
-
-using HttpTransferFunction = std::function<size_t (const std::byte*, size_t)>;
-
-
-
-
-} // namespace Network
-
-} // namespace BPrivate
-
-#endif // _HTTP_STREAM_H_