--- a/src/network/core/address.h
+++ b/src/network/core/address.h
@@ -20,8 +20,8 @@
 #ifdef ENABLE_NETWORK
 
 class NetworkAddress;
-typedef SmallVector<NetworkAddress, 4> NetworkAddressList;
-typedef SmallMap<NetworkAddress, SOCKET, 4> SocketList;
+typedef SmallVector<NetworkAddress, 4> NetworkAddressList; ///< Type for a list of addresses.
+typedef SmallMap<NetworkAddress, SOCKET, 4> SocketList;    ///< Type for a mapping between address and socket.
 
 /**
  * Wrapper for (un)resolved network addresses; there's no reason to transform
@@ -44,8 +44,9 @@
 	SOCKET Resolve(int family, int socktype, int flags, SocketList *sockets, LoopProc func);
 public:
 	/**
-	 * Create a network address based on a resolved IP and port
-	 * @param address the IP address with port
+	 * Create a network address based on a resolved IP and port.
+	 * @param address The IP address with port.
+	 * @param address_length The length of the address.
 	 */
 	NetworkAddress(struct sockaddr_storage &address, int address_length) :
 		address_length(address_length),
@@ -55,8 +56,9 @@
 	}
 
 	/**
-	 * Create a network address based on a resolved IP and port
-	 * @param address the IP address with port
+	 * Create a network address based on a resolved IP and port.
+	 * @param address The IP address with port.
+	 * @param address_length The length of the address.
 	 */
 	NetworkAddress(sockaddr *address, int address_length) :
 		address_length(address_length)
@@ -68,7 +70,7 @@
 
 	/**
 	 * Create a network address based on a unresolved host and port
-	 * @param ip the unresolved hostname
+	 * @param hostname the unresolved hostname
 	 * @param port the port
 	 * @param family the address family
 	 */

--- a/src/network/core/os_abstraction.h
+++ b/src/network/core/os_abstraction.h
@@ -279,6 +279,11 @@
 #	endif
 #endif /* __MORPHOS__ || __AMIGA__ */
 
+/**
+ * Try to set the socket into non-blocking mode.
+ * @param d The socket to set the non-blocking more for.
+ * @return True if setting the non-blocking mode succeeded, otherwise false.
+ */
 static inline bool SetNonBlocking(SOCKET d)
 {
 #ifdef WIN32
@@ -293,6 +298,11 @@
 #endif
 }
 
+/**
+ * Try to set the socket to not delay sending.
+ * @param d The socket to disable the delaying for.
+ * @return True if disabling the delaying succeeded, otherwise false.
+ */
 static inline bool SetNoDelay(SOCKET d)
 {
 	/* XXX should this be done at all? */
@@ -306,8 +316,8 @@
 }
 
 /* Make sure these structures have the size we expect them to be */
-assert_compile(sizeof(in_addr)  ==  4);
-assert_compile(sizeof(in6_addr) == 16);
+assert_compile(sizeof(in_addr)  ==  4); ///< IPv4 addresses should be 4 bytes.
+assert_compile(sizeof(in6_addr) == 16); ///< IPv6 addresses should be 16 bytes.
 
 #endif /* ENABLE_NETWORK */
 

--- a/src/network/core/packet.cpp
+++ b/src/network/core/packet.cpp
@@ -70,7 +70,7 @@
 	this->pos  = 0; // We start reading from here
 }
 
-/**
+/*
  * The next couple of functions make sure we can send
  *  uint8, uint16, uint32 and uint64 endian-safe
  *  over the network. The least significant bytes are
@@ -82,17 +82,29 @@
  *  and non-zero means true.
  */
 
+/**
+ * Package a boolean in the packet.
+ * @param data The data to send.
+ */
 void Packet::Send_bool(bool data)
 {
 	this->Send_uint8(data ? 1 : 0);
 }
 
+/**
+ * Package a 8 bits integer in the packet.
+ * @param data The data to send.
+ */
 void Packet::Send_uint8(uint8 data)
 {
 	assert(this->size < SEND_MTU - sizeof(data));
 	this->buffer[this->size++] = data;
 }
 
+/**
+ * Package a 16 bits integer in the packet.
+ * @param data The data to send.
+ */
 void Packet::Send_uint16(uint16 data)
 {
 	assert(this->size < SEND_MTU - sizeof(data));
@@ -100,6 +112,10 @@
 	this->buffer[this->size++] = GB(data, 8, 8);
 }
 
+/**
+ * Package a 32 bits integer in the packet.
+ * @param data The data to send.
+ */
 void Packet::Send_uint32(uint32 data)
 {
 	assert(this->size < SEND_MTU - sizeof(data));
@@ -109,6 +125,10 @@
 	this->buffer[this->size++] = GB(data, 24, 8);
 }
 
+/**
+ * Package a 64 bits integer in the packet.
+ * @param data The data to send.
+ */
 void Packet::Send_uint64(uint64 data)
 {
 	assert(this->size < SEND_MTU - sizeof(data));
@@ -123,9 +143,9 @@
 }
 
 /**
- *  Sends a string over the network. It sends out
- *  the string + '\0'. No size-byte or something.
- * @param data   the string to send
+ * Sends a string over the network. It sends out
+ * the string + '\0'. No size-byte or something.
+ * @param data The string to send
  */
 void Packet::Send_string(const char *data)
 {
@@ -136,14 +156,18 @@
 }
 
 
-/**
+/*
  * Receiving commands
  * Again, the next couple of functions are endian-safe
  *  see the comment before Send_bool for more info.
  */
 
 
-/** Is it safe to read from the packet, i.e. didn't we run over the buffer ? */
+/**
+ * Is it safe to read from the packet, i.e. didn't we run over the buffer ?
+ * @param bytes_to_read The amount of bytes we want to try to read.
+ * @return True if that is safe, otherwise false.
+ */
 bool Packet::CanReadFromPacket(uint bytes_to_read)
 {
 	/* Don't allow reading from a quit client/client who send bad data */
@@ -179,11 +203,19 @@
 	this->pos = sizeof(PacketSize);
 }
 
+/**
+ * Read a boolean from the packet.
+ * @return The read data.
+ */
 bool Packet::Recv_bool()
 {
 	return this->Recv_uint8() != 0;
 }
 
+/**
+ * Read a 8 bits integer from the packet.
+ * @return The read data.
+ */
 uint8 Packet::Recv_uint8()
 {
 	uint8 n;
@@ -194,6 +226,10 @@
 	return n;
 }
 
+/**
+ * Read a 16 bits integer from the packet.
+ * @return The read data.
+ */
 uint16 Packet::Recv_uint16()
 {
 	uint16 n;
@@ -205,6 +241,10 @@
 	return n;
 }
 
+/**
+ * Read a 32 bits integer from the packet.
+ * @return The read data.
+ */
 uint32 Packet::Recv_uint32()
 {
 	uint32 n;
@@ -218,6 +258,10 @@
 	return n;
 }
 
+/**
+ * Read a 64 bits integer from the packet.
+ * @return The read data.
+ */
 uint64 Packet::Recv_uint64()
 {
 	uint64 n;
@@ -235,7 +279,12 @@
 	return n;
 }
 
-/** Reads a string till it finds a '\0' in the stream */
+/**
+ * Reads a string till it finds a '\0' in the stream.
+ * @param buffer The buffer to put the data into.
+ * @param size   The size of the buffer.
+ * @param allow_newlines Whether the string validation should remove newlines.
+ */
 void Packet::Recv_string(char *buffer, size_t size, bool allow_newlines)
 {
 	PacketSize pos;

--- a/src/network/core/tcp.cpp
+++ b/src/network/core/tcp.cpp
@@ -18,6 +18,10 @@
 
 #include "tcp.h"
 
+/**
+ * Construct a socket handler for a TCP connection.
+ * @param s The just opened TCP connection.
+ */
 NetworkTCPSocketHandler::NetworkTCPSocketHandler(SOCKET s) :
 		NetworkSocketHandler(),
 		packet_queue(NULL), packet_recv(NULL),
@@ -138,8 +142,7 @@
 
 /**
  * Receives a packet for the given client
- * @param status the variable to store the status into
- * @return the received packet (or NULL when it didn't receive one)
+ * @return The received packet (or NULL when it didn't receive one)
  */
 Packet *NetworkTCPSocketHandler::ReceivePacket()
 {
@@ -219,7 +222,7 @@
 /**
  * Check whether this socket can send or receive something.
  * @return \c true when there is something to receive.
- * @note Sets #writeable if more data can be sent.
+ * @note Sets #writable if more data can be sent.
  */
 bool NetworkTCPSocketHandler::CanSendReceive()
 {

--- a/src/network/core/tcp_admin.cpp
+++ b/src/network/core/tcp_admin.cpp
@@ -19,6 +19,10 @@
 #include "tcp_admin.h"
 #include "../../debug.h"
 
+/**
+ * Create the admin handler for the given socket.
+ * @param s The socket to communicate over.
+ */
 NetworkAdminSocketHandler::NetworkAdminSocketHandler(SOCKET s)
 {
 	this->sock = s;

--- a/src/network/core/tcp_admin.h
+++ b/src/network/core/tcp_admin.h
@@ -448,9 +448,6 @@
 	~NetworkAdminSocketHandler();
 
 	NetworkRecvStatus ReceivePackets();
-
-	const char *ReceiveCommand(Packet *p, struct CommandPacket *cp);
-	void SendCommand(Packet *p, const struct CommandPacket *cp);
 };
 
 #endif /* ENABLE_NETWORK */

--- a/src/network/core/tcp_content.h
+++ b/src/network/core/tcp_content.h
@@ -47,12 +47,14 @@
 	PACKET_CONTENT_END                    ///< Must ALWAYS be on the end of this list!! (period)
 };
 
+/** Unique identifier for the content. */
 enum ContentID {
-	INVALID_CONTENT_ID = UINT32_MAX
+	INVALID_CONTENT_ID = UINT32_MAX ///< Sentinel for invalid content.
 };
 
 /** Container for all important information about a piece of content. */
 struct ContentInfo {
+	/** The state the content can be in. */
 	enum State {
 		UNSELECTED,     ///< The content has not been selected
 		SELECTED,       ///< The content has been manually selected

--- a/src/network/core/tcp_game.h
+++ b/src/network/core/tcp_game.h
@@ -525,11 +525,32 @@
 	uint last_packet;            ///< Time we received the last frame.
 
 	NetworkRecvStatus CloseConnection(bool error = true);
+
+	/**
+	 * Close the network connection due to the given status.
+	 * @param status The reason the connection got closed.
+	 */
 	virtual NetworkRecvStatus CloseConnection(NetworkRecvStatus status) = 0;
 	virtual ~NetworkGameSocketHandler() {}
 
-	inline void SetInfo(NetworkClientInfo *info) { assert(info != NULL && this->info == NULL); this->info = info; }
-	inline NetworkClientInfo *GetInfo() const { return this->info; }
+	/**
+	 * Sets the client info for this socket handler.
+	 * @param info The new client info.
+	 */
+	inline void SetInfo(NetworkClientInfo *info)
+	{
+		assert(info != NULL && this->info == NULL);
+		this->info = info;
+	}
+
+	/**
+	 * Gets the client info of this socket handler.
+	 * @return The client info.
+	 */
+	inline NetworkClientInfo *GetInfo() const
+	{
+		return this->info;
+	}
 
 	NetworkRecvStatus ReceivePackets();
 

--- a/src/network/core/tcp_http.cpp
+++ b/src/network/core/tcp_http.cpp
@@ -25,8 +25,9 @@
 
 /**
  * Start the querying
- * @param sock     the socket of this connection
+ * @param s        the socket of this connection
  * @param callback the callback for HTTP retrieval
+ * @param host     the hostname of the server to connect to
  * @param url      the url at the server
  * @param data     the data to send
  * @param depth    the depth (redirect recursion) of the queries