X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=sources%2FTCP_echo.c;fp=sources%2FTCP_echo.c;h=50f681b6e09aacb0d59acccaf885161294337601;hp=6b806ac944032fd763cfe948e959b8e1582c8f18;hb=d015e72d818c1632b0171cb6bea8c31018ff433e;hpb=245e9747a8c390121a19b1ad5e2a91db0c06551e

diff --git a/sources/TCP_echo.c b/sources/TCP_echo.c
index 6b806ac..50f681b 100644
--- a/sources/TCP_echo.c
+++ b/sources/TCP_echo.c
@@ -40,6 +40,14 @@
 #include <errno.h>	 /* include error codes */
 #include <string.h>	 /* include erroro strings definitions */
 #include <stdlib.h>
+#include <netinet/tcp.h>
+
+/* still not defined in some include, because too new ... */
+#ifndef TCP_CONGESTION
+#define TCP_CONGESTION	13
+#endif
+
+
 
 #include "Gapil.h"
 #include "macros.h"
@@ -56,14 +64,17 @@ int main(int argc, char *argv[])
  * Variables definition  
  */
     int sock, i;
+    socklen_t len;
     int reset = 0;
+    int verbosity = 0;
+    char buffer[MAXLINE];
     struct linger ling;
     /*
      * Input section: decode parameters passed in the calling 
      * Use getopt function
      */
     opterr = 0;	 /* don't want writing to stderr */
-    while ( (i = getopt(argc, argv, "hr")) != -1) {
+    while ( (i = getopt(argc, argv, "hrv")) != -1) {
 	switch (i) {
 	/* 
 	 * Handling options 
@@ -73,6 +84,9 @@ int main(int argc, char *argv[])
 	    usage();
 	    return(1);
 	    break;
+	case 'v':
+	    verbosity = 1;
+	    break;
 	case 'r':
 	    reset = 1;
 	    break;
@@ -90,11 +104,21 @@ int main(int argc, char *argv[])
      *		      Main code beginning
      * 
      * ***********************************************************/
-    /* call sockaddr to get a connected socket */
+    /* call sockconn to get a connected socket */
     if ( (sock = sockconn(argv[optind], "echo", 6, SOCK_STREAM)) < 0) {
 	if (errno) perror("Socket creation error");
 	return 1;
     }
+    /* print some info about the socket, used to test some TCP_* options */
+    if (verbosity) {
+	len = sizeof(buffer);
+	if (getsockopt(sock, SOL_TCP, TCP_CONGESTION, buffer, &len) < 0) {
+	    perror("Cannot read congestion algorithm");
+	} else {
+	    buffer[len]=0;
+	    printf("Congestion algorithm %s\n", buffer);
+	}
+    }
     /* check if resetting on close is required */
     if (reset) {
 	printf("Setting reset on close \n");