jacoelho

package main

import (
	"fmt"
	"net/http"
	"net/http/pprof"
	"strings"
)

func handler(w http.ResponseWriter, r *http.Request) {

jacoelho

type Cache struct {
	kv map[string]*bufio.Reader
	http.RoundTripper
}

func (c *Cache) RoundTrip(req *http.Request) (*http.Response, error) {
	if req.Method != "GET" {
		return c.RoundTrip(req)
	}

jacoelho

type RoundTripper interface {
        RoundTrip(*Request) (*Response, error)
}

jacoelho

// http.Client - comments removed
type Client struct {
	Transport     RoundTripper
	CheckRedirect func(req *Request, via []*Request) error
	Jar           CookieJar
	Timeout       time.Duration
}

jacoelho

c := &http.Client{
    Transport: &http.Transport{
        Dial: (&net.Dialer{
            Timeout:   30 * time.Second,
            KeepAlive: 30 * time.Second,
        }).Dial,
        TLSHandshakeTimeout:   10 * time.Second,
        ResponseHeaderTimeout: 10 * time.Second,
        ExpectContinueTimeout: 1 * time.Second,
    },

jacoelho

resp, err := http.Get("http://example.com/")

jacoelho

// Retry - http client with retry support
type Retry struct {
	http.RoundTripper
}

// Naive Retry - every 2 seconds
func (r *Retry) RoundTrip(req *http.Request) (*http.Response, error) {
	for {
		resp, err := r.RoundTripper.RoundTrip(req)

jacoelho

type Retry struct {
	http.RoundTripper
}

func (r *Retry) RoundTrip(req *http.Request) (*http.Response, error) {
	for {
		log.Printf("retry: doing request %s\n", req.URL)
		resp, err := r.RoundTripper.RoundTrip(req)

		if err == nil && resp.StatusCode < 500 {

jacoelho

# old mac
sudo ipfw pipe 1 config bw 300kbit/s;
sudo ipfw add pipe 1 dst-ip 0.0.0.0/0; 

# to reset: 
sudo ipfw flush

# 
dnctl pipe 1 config bw 10Kbit/s delay 300
echo "dummynet out proto tcp from any to example.com pipe 1" |pfctl -f -

jacoelho

counter http_requests_total by method,status
counter http_requests_time_seconds by bucket, method, status

#log_format main '$realip_remote_addr "$remote_addr" "environment" '
#                '- $remote_user '
#                '[$time_local] "$request_id" "$cookie_PHPSESSID" '
#                '"$request" $status $bytes_sent "$http_referer" '
#                '"$http_user_agent" "-" ($request_time)';

/(?P<local>\d+(\.\d+){3})\s+/ +  # local ip