working commit

works/rpcvar/msgheader.cpp

@@ -0,0 +1,49 @@
+
+extern "C" {
+#include <arpa/inet.h>
+}
+
+#include <expected>
+#include <string>
+#include <cstring>
+#include <iostream>
+#include <format>
+#include <cstdint>
+
+#include <msgheader.hpp>
+
+MessageHeader::MessageHeader(const uint32_t ipSize) {
+        pSize = ipSize;
+}
+
+MessageHeader::MessageHeader(void) {
+        pSize = 0;
+}
+
+std::string MessageHeader::Encode() {
+        std::string buffer, tmp;
+        auto magic = htonl(MAGIC);
+        tmp = std::string(reinterpret_cast<const char*>(&magic), sizeof(magic));
+        buffer.append(tmp);
+
+        auto size = htonl(pSize);
+        tmp = std::string(reinterpret_cast<const char*>(&size), sizeof(size));
+        buffer.append(tmp);
+        return buffer;
+}
+
+std::expected<void, std::string> MessageHeader::Decode(const std::string rawHeader) {
+        uint32_t tmp;
+        std::memcpy(&tmp, rawHeader.data(), sizeof(uint32_t));
+        auto magic = ntohl(tmp);
+        if (magic != MAGIC) {
+                return std::unexpected("Wrong magic code");
+        }
+        std::memcpy(&tmp, rawHeader.data() + sizeof(uint32_t), sizeof(uint32_t));
+        pSize = ntohl(tmp);
+        return {};
+}
+
+uint32_t MessageHeader::PacketSize() {
+        return pSize;
+}