majek

diff --git a/build.sh b/build.sh
index 112e404..2974fdc 100755
--- a/build.sh
+++ b/build.sh
@@ -31,7 +31,7 @@ else
   USE_LIBS="-lpcap $LIBS"
 fi
 
-OBJFILES="api.c process.c fp_tcp.c fp_mtu.c fp_http.c readfp.c"
+OBJFILES="api.c process.c fp_tcp.c fp_mtu.c fp_http.c fp_ssl.c readfp.c"

majek

import logging
import socket

log = logging.getLogger('udp_server')


def udp_server(host='127.0.0.1', port=1234):
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

majek

#!/bin/bash
set -e

echo "[+] Clearling old mptcp endpoints"
for i in `ip mptcp endpoint show|cut -d " " -f 3`; do
    ip mptcp endpoint delete id $i;
done

declare -A OLD

majek

#!/usr/bin/env python
import collections
import itertools
import sys

import string
import array

def load_memory(filename):
    regs = {}

majek

Passing TCP socket descriptors around

In linux, normally, it is impossible to "bind()" to the same TCP port twice. If you try to bind to the same port from second proces unix processes you'll see:

socket.error: [Errno 98] Address already in use

majek

#!/bin/bash
set -e
set -u
set -o pipefail

IFACE="lo"
LATENCY=200

CLEAN=""
IPS=()

majek

.PHONY: repro
repro:
	$(CLANG) -Wall -Wextra -O2 --target=bpf -c -g \
		repro.bpf.c \
		-o repro.bpf.o
	bpftool gen skeleton repro.bpf.o > repro.bpf.skel.h
	$(CLANG) -Wall -fno-omit-frame-pointer -Wextra -O2 -g \
		repro.c \
		-lbpf \
		-lelf \

majek

#!/usr/bin/gnuplot -c
set terminal pngcairo transparent enhanced linewidth 2 font 'Helvetica,15' size 2000, 1200 background rgb 'white'
set xtics nomirror rotate by -45
set ytics nomirror
set grid ytics
set grid xtics
set ylabel "Bytes"
set datafile separator ","
set output ARG3
set key autotitle columnheader outside

majek

all:
	clang -g -O2 -Wall -Wextra net.c send.c -o send
	clang -g -O2 -Wall -Wextra net.c receive.c -o receive
	clang -g -O2 -Wall -Wextra net.c proxy-naive.c -o proxy-naive
	clang -g -O2 -Wall -Wextra net.c proxy-splice.c -o proxy-splice

majek

rm .config
make tinyconfig
make kvm_guest.config
make kvmconfig
./scripts/config \
        -e EARLY_PRINTK \
        -e 64BIT \
        -e BPF -d EMBEDDED -d EXPERT \
        -e INOTIFY_USER