First unit tests

Bugs that still remain:

• The socketaddr factory (DNS lookup) does not yet seam to be fully functional.
• UDP socket test needs to pass
• TCP socket test needs to pass
• Unit Test for socketaddr Factory lookups
• Segfault at test shutdown needs to be fixed.
• fcntl needs to be checked for correct flag retuns

src/net/udp_client.hpp

@@ -49,9 +49,13 @@ public:
         return arr.at(pos);
     }
 
-    inline constexpr const_reference operator[](size_t pos) noexcept {
+    inline constexpr const_reference operator[](size_t pos) const noexcept {
         return arr.operator[](pos);
     }
+	
+	inline uint8_t& operator[](size_t pos) noexcept {
+		return arr.operator[](pos);
+	}
 
     inline bool advance(size_t i) {
         if (this->actual_length + i > this->max_size()) {
@@ -78,6 +82,22 @@ public:
     constexpr uint8_t* raw() noexcept {
         return this->arr.data();
     }
+	
+	constexpr std::array<uint8_t, pkg_size>::iterator begin() noexcept {
+		return this->arr.begin();
+	}
+	
+	constexpr std::array<uint8_t, pkg_size>::iterator end() noexcept {
+		return this->arr.end();
+	}
+	
+	constexpr std::array<uint8_t, pkg_size>::const_iterator cbegin() const noexcept {
+		return this->arr.cbegin();
+	}
+	
+	constexpr std::array<uint8_t, pkg_size>::const_iterator cend() const noexcept {
+		return this->arr.cend();
+	}
 };
 
 class address_augmented_iorecord : public iorecord {