[http][server] Access log

[at15]

Related #18

• [x] wrap http response writer
• [x] support TLS using self signed
  • [ ] optional, let's encrypt #15
• [ ] grpc & http
  • [ ] need to see how gRPC define service and try to make it work with http
  • [ ] might use grpc generated file instead of handwritten go structs
  • [ ] trace or log grpc?
• [ ] ingest the log to elastic search? (sounds like a good idea ...)
  • https://www.elastic.co/guide/en/beats/filebeat/current/filebeat-module-nginx.html it can even show visitor address in dashboard ... amazing ...
• [ ] consider adding tracing to it
  • might take the chance to refactor the broken tracing package ....

gommon

• [ ] need to be able to config logger by name? so they can have different handlers
• [ ] support time duration as field

Don't know how to fix

• can't redirect http traffic to http
  • https://github.com/unrolled/secure requires two port, one for http and one for https
  • if same port is needed, need to sniff packages and hack the logic of http server https://groups.google.com/forum/#!topic/golang-nuts/4oZp1csAm2o
• might need to hijack net/http logger

2018/02/08 17:08:22 http: TLS handshake error from [::1]:41882: tls: first record does not look like a TLS handshake
2018/02/08 17:08:30 http: TLS handshake error from [::1]:41884: tls: first record does not look like a TLS handshake
2018/02/08 17:08:30 http: TLS handshake error from [::1]:41886: tls: first record does not look like a TLS handshake
2018/02/08 17:08:35 http: TLS handshake error from [::1]:41888: tls: first record does not look like a TLS handshake
2018/02/08 17:08:46 http2: server: error reading preface from client [::1]:41894: read tcp [::1]:7080->[::1]:41894: read: connection reset by peer