Some little clean ups for the client library before I turn it into a perl module

1 files changed, 9 insertions, 3 deletions

diff --git a/libvxi11client/client.c b/libvxi11client/client.c
index f946547..747947b 100644
--- a/libvxi11client/client.c
+++ b/libvxi11client/client.c
@@ -6,7 +6,7 @@
 static char* geterrorstring(int errorcode) {
 	switch (errorcode) {
 		case 0:
-			return "no response from server";
+			return "invalid state (not connected) or no response from server";
 		case -8:
 			return "operation not supported";
 		default:
@@ -14,12 +14,18 @@ static char* geterrorstring(int errorcode) {
 	}
 }
 
-int main() {
+int main(int argc, char *argv[]) {
+
 	printf("VXI-11 test client\n");
 
+	if (argc != 2) {
+		printf("usage; %s <host>\n", argv[0]);
+		exit(1);
+	}
+
 	int err = 0;
 
-	if ((err = vxi11_open("192.168.2.250")) > 0) {
+	if ((err = vxi11_open(argv[1])) > 0) {
 
 		// write some bytes
 		int byteswritten = vxi11_write(IDENTIFY, sizeof(IDENTIFY));