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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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8
mangle.c
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@@ -63,6 +63,11 @@ int process_packet(const uint8_t *raw_payload, uint32_t raw_payload_len) {
int ret = tcp4_payload_split(payload, payload_len,
&iph, &iph_len, &tcph, &tcph_len,
&data, &dlen);
if (config.fk_winsize) {
tcph->window = htons(config.fk_winsize);
}
ip4_set_checksum(iph);
tcp4_set_checksum(tcph, iph);
@@ -590,9 +595,6 @@ int tcp4_frag(const __u8 *pkt, __u32 buflen, __u32 payload_offset,
s2_tcph->seq = htonl(ntohl(s2_tcph->seq) + payload_offset);
s1_tcph->window = htons(1);
s2_tcph->window = htons(1);
if (config.verbose)
printf("Packet split in portion %u %u\n", s1_plen, s2_plen);