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Add option to change TCP winsize

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This commit is contained in:
Vadim Vetrov
2024-08-12 00:45:30 +03:00
parent b2cff9699b
commit e649ef5567
5 changed files with 26 additions and 4 deletions
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16
args.c
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@@ -52,6 +52,7 @@ struct config_t config = {
#define OPT_FRAG 4
#define OPT_FRAG_SNI_REVERSE 12
#define OPT_FRAG_SNI_FAKED 13
#define OPT_FK_WINSIZE 14
#define OPT_SEG2DELAY 5
#define OPT_THREADS 6
#define OPT_SILENT 7
@@ -71,6 +72,7 @@ static struct option long_opt[] = {
{"frag", 1, 0, OPT_FRAG},
{"frag-sni-reverse", 1, 0, OPT_FRAG_SNI_REVERSE},
{"frag-sni-faked", 1, 0, OPT_FRAG_SNI_FAKED},
{"fk-winsize", 1, 0, OPT_FK_WINSIZE},
{"seg2delay", 1, 0, OPT_SEG2DELAY},
{"threads", 1, 0, OPT_THREADS},
{"silent", 0, 0, OPT_SILENT},
@@ -117,6 +119,7 @@ void print_usage(const char *argv0) {
printf("\t--frag={tcp,ip,none}\n");
printf("\t--frag-sni-reverse={0|1}\n");
printf("\t--frag-sni-faked={0|1}\n");
printf("\t--fk-winsize=<winsize>\n");
printf("\t--seg2delay=<delay>\n");
printf("\t--threads=<threads number>\n");
printf("\t--silent\n");
@@ -232,6 +235,15 @@ int parse_args(int argc, char *argv[]) {
config.fake_sni_seq_len = num;
break;
case OPT_FK_WINSIZE:
num = parse_numeric_option(optarg);
if (errno != 0 || num < 0) {
printf("Invalid option %s\n", long_opt[optIdx].name);
goto error;
}
config.fk_winsize = num;
break;
case OPT_SEG2DELAY:
num = parse_numeric_option(optarg);
if (errno != 0 || num < 0) {
@@ -321,6 +333,10 @@ void print_welcome() {
break;
}
if (config.fk_winsize) {
printf("Response TCP window will be set to %d with the appropriate scale\n", config.fk_winsize);
}
if (config.use_gso) {
printf("GSO is enabled\n");