Add comments (checked that no other host socket numbers leak to the game)

Core/HLE/proAdhoc.cpp

@@ -1813,6 +1813,7 @@ int getLocalIp(sockaddr_in* SocketAddress) {
 	}
 
 #else // Alternative way
+	// Socket doesn't "leak" to the game.
 	int sock = socket(AF_INET, SOCK_DGRAM, 0);
 	if (sock != SOCKET_ERROR) {
 		const char* kGoogleDnsIp = "8.8.8.8"; // Needs to be an IP string so it can be resolved as fast as possible to IP, doesn't need to be reachable

Core/HLE/sceNetAdhoc.cpp

@@ -1379,6 +1379,7 @@ int sceNetAdhocPdpCreate(const char *mac, int port, int bufferSize, u32 flag) {
 			// Valid MAC supplied. FIXME: MAC only valid after successful attempt to Create/Connect/Join a Group? (ie. adhocctlCurrentMode != ADHOCCTL_MODE_NONE)
 			if ((adhocctlCurrentMode != ADHOCCTL_MODE_NONE) && isLocalMAC(saddr)) {
 				// Create Internet UDP Socket
+				// Socket is remapped through adhocSockets
 				int usocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 				// Valid Socket produced
 				if (usocket != INVALID_SOCKET) {
@@ -3257,6 +3258,7 @@ int RecreatePtpSocket(int ptpId) {
 	closesocket(sock->data.ptp.id);
 
 	// Create a new socket
+	// Socket is remapped through adhocSockets
 	int tcpsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 
 	// Valid Socket produced
@@ -3375,7 +3377,8 @@ static int sceNetAdhocPtpOpen(const char *srcmac, int sport, const char *dstmac,
 			
 			// Valid Arguments
 			if (bufsize > 0 && rexmt_int > 0 && rexmt_cnt > 0) {
-				// Create Infrastructure Socket
+				// Create Infrastructure Socket (?)
+				// Socket is remapped through adhocSockets
 				int tcpsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 
 				// Valid Socket produced
@@ -3977,7 +3980,8 @@ static int sceNetAdhocPtpListen(const char *srcmac, int sport, int bufsize, int
 			// Valid Arguments
 			if (bufsize > 0 && rexmt_int > 0 && rexmt_cnt > 0 && backlog > 0)
 			{
-				// Create Infrastructure Socket
+				// Create Infrastructure Socket (?)
+				// Socket is remapped through adhocSockets
 				int tcpsocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 
 				// Valid Socket produced

Core/HLE/sceNetInet.cpp

@@ -321,6 +321,7 @@ int sceNetInetPoll(u32 fdsPtr, u32 nfds, int timeout) { // timeout in milisecond
 	FD_ZERO(&readfds); FD_ZERO(&writefds); FD_ZERO(&exceptfds);
 	for (int i = 0; i < (s32)nfds; i++) {
 		if (fdarray[i].fd < 0) {
+			// In Unix, this is OK and means it the fd should be ignored, except fdarray[i].revents should be zeroed.
 			inetLastErrno = EINVAL;
 			return hleLogError(Log::sceNet, -1, "invalid socket id");
 		}

Core/HLE/sceNetInet.h

@@ -96,8 +96,8 @@ typedef struct SceNetInetLinger {
 // Polling Event Field
 typedef struct SceNetInetPollfd { //similar format to pollfd in 32bit (pollfd in 64bit have different size)
 	s32_le fd;
-	s16_le events;
-	s16_le revents;
+	s16_le events;  // requested events
+	s16_le revents; // returned events
 } PACK SceNetInetPollfd;
 
 // TCP & UDP Socket Union (Internal use only)