remove some magic numbers, clean up DCC ipv4/ipv6 global variable mess and use a union to save memory. (#139)

Co-authored-by: Emeka Nkurumeh <emekankurumeh@outlook.com>

1 files changed, 21 insertions, 3 deletions

diff --git a/README.md b/README.md
index ac238eb..3f5f7a5 100644
--- a/README.md
+++ b/README.md
@@ -15,11 +15,29 @@ Building and installing from source:
 
 Consult `man kirc` for a full list and explanation of available arguments.
 
-    kirc [-s hostname] [-p port] [-c channels] [-n nickname] [-r realname]
-         [-u username] [-k password] [-a token] [-o logfile] [-e|x|v|V]
+    kirc [-s hostname] [-p port] [-c channels] [-n nickname] [-r realname] [-a auth]
+         [-u username] [-k password] [-a token] [-o logfile] [-D directory] [-4|6|d|e|x|v|V]
 
 ## DCC
-	DCC transfers are always accpeted without user interaction and downloaded to the current directory.
+	DCC transfers are only accepted if the -d flag is passed to kirc.
+ 	If -d is passed to kirc, DCC transfers are always accpeted without user interaction
+  	and downloaded to the configured directory.
+	If no directory is set with the -D option, files are downloaded to the current directory.
+
+ ## DCC SEND
+	DCC SEND is only enabled if the -d flag is passed to kirc.
+	You can send files via DCC SEND using the folowing command:
+	/dcc <target nick> <path to file> <internal ip> <external ip> <port>
+	If you are sending files to clients outside of your lan, you must
+	make sure that the chosen port is open and forwarded to
+	the sending machine's internal address.
+	Thus is usually done from your router's settings.
+	For example:
+	/dcc dcc_client /home/user/upload/file.txt 192.168.1.100 12.34.56.78 10000
+	This command would send the file located at /home/user/upload/file.txt to the nick
+	dcc_client, assuming the sending machine's local ip is 192.168.1.100, and
+ 	the sending machine's external ip is 12.34.56.78, and that the port 10000
+  	is open and forwarded to the sending machine's local address.
 
 ## Command Aliases