[squid-users] youtube videos take 60 seconds to start

mabraFoo bryan.mabra at gmail.com
Sat May 7 15:06:22 UTC 2016

I started working with squid a few months back.  First of all, if you are a
squid developer.  THANK YOU for this awesome software.

I am using ssl_bump in transparent mode.  When I use my ipad with safari
and go to youtube there is a 60+ second delay before the video starts.  My
guess is that squid is downloading the entire video and is not sending
until the entire download is complete.  Does anyone know if there is
something I could change in my config to get the video to start without
that delay?

If you see anything off in my config, please explain.

Squid Cache: Version 3.5.17
Service Name: squid
configure options:  '--build=x86_64-redhat-linux-gnu'
'--host=x86_64-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr'
'--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin'
'--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include'
'--libdir=/usr/lib64' '--libexecdir=/usr/libexec'
'--sharedstatedir=/var/lib' '--mandir=/usr/share/man'
'--infodir=/usr/share/info' '--verbose' '--exec_prefix=/usr'
'--libexecdir=/usr/lib64/squid' '--localstatedir=/var'
'--datadir=/usr/share/squid' '--sysconfdir=/etc/squid'
'--disable-dependency-tracking' '--enable-follow-x-forwarded-for'
'--enable-cache-digests' '--enable-cachemgr-hostname=localhost'
'--enable-delay-pools' '--enable-epoll' '--enable-icap-client'
'--enable-ident-lookups' '--enable-linux-netfilter'
'--enable-removal-policies=heap,lru' '--enable-snmp'
'--enable-storeio=aufs,diskd,ufs,rock' '--enable-wccpv2' '--enable-esi'
'--enable-ssl-crtd' '--enable-icmp' '--with-aio'
'--with-default-user=squid' '--with-filedescriptors=16384' '--with-dl'
'--with-openssl' '--with-pthreads' '--with-included-ltdl'
'--disable-arch-native' '--enable-ecap' '--without-nettle'
'build_alias=x86_64-redhat-linux-gnu' 'host_alias=x86_64-redhat-linux-gnu'
'CFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches
-m64 -mtune=generic' 'LDFLAGS=-Wl,-z,relro ' 'CXXFLAGS=-O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong
--param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic
-fPIC' 'PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig'

acl localnet src     # RFC1918 possible internal network
acl localnet src  # RFC1918 possible internal network
acl localnet src # RFC1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged)
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 210         # wais
acl Safe_ports port 21          # ftp
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 443         # https
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 70          # gopher
acl Safe_ports port 777         # multiling http
acl Safe_ports port 80          # http
acl SSL_ports port 443

coredump_dir /var/spool/squid
strip_query_terms off

forward_max_tries 25
http_access allow all
http_access deny CONNECT !SSL_ports
http_access deny !Safe_ports

http_port  3126 intercept
http_port  3128 ssl-bump generate-host-certificates=on
dynamic_cert_mem_cache_size=4MB cert=/etc/squid/sslcert/myca.pem
https_port 3127 intercept ssl-bump generate-host-certificates=on
dynamic_cert_mem_cache_size=4MB cert=/etc/squid/sslcert/myca.pem

refresh_pattern .               0       20%     4320
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
shutdown_lifetime 3 seconds

acl step1 at_step SslBump1
acl step2 at_step SslBump2
acl nobumpSites ssl::server_name .netflix.com

ssl_bump peek step1 all
ssl_bump splice step2 nobumpSites
ssl_bump bump

sslcrtd_children 8 startup=1 idle=1
sslcrtd_program /usr/lib64/squid/ssl_crtd -s /var/spool/squid_ssldb -M 4MB
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