Document options in sample.env, add LDAP_TIMEOUT to connection too

EMAIL_URL="smtp+tls://wybory:changeme@smtp.example.com:587"

# EMAIL_TIMEOUT="20"

# WARNING: non-commented options are required, change them.

# SMTP server URL (see django-environ environ.Env.email_url())

EMAIL_URL="smtp+tls://wybory:password@smtp.example.com:587"

# Email From header (see Django settings DEFAULT_FROM_EMAIL)

DEFAULT_FROM_EMAIL="Wybory <wybory@example.com>"

# SMTP blocking operations timeout (see Django settings EMAIL_TIMEOUT)

#EMAIL_TIMEOUT="20"

# Number of emails to send in one batch (connection)

#EMAIL_BATCH_SIZE="20"

SITE_URL="http://localhost:8000"

# SECRET_KEY="changeme"

# Public (user-facing) site URL

SITE_URL="https://wybory.example.com"

# Django secret key (see Django settings SECRET_KEY)

SECRET_KEY=

# Set to false in production (see Django settings DEBUG)

#DEBUG="false"

# ALLOWED_HOSTS="localhost"

# RQ_URL="redis://localhost:6379/0"

# Comma-separated allowed hosts list (see Django settings ALLOWED_KEYS)

ALLOWED_HOSTS="localhost,wybory.example.com"

# Redis instance URL (see django-rq RQ_QUEUES)

RQ_URL="redis://localhost:6379/0"

# Timezone in IANA notation (see Django settings TIME_ZONE)

#TIME_ZONE="Etc/UTC"

# DATABASE_URL="sqlite:///db.sqlite3"

# SCHOOL_YEAR_MONTH=9

# SCHOOL_YEAR_DAY=1

# Database URL (see dj-database-url)

DATABASE_URL="postgres://wybory:password@localhost:5432/wybory"

# First day of the school year

#SCHOOL_YEAR_MONTH="9"

#SCHOOL_YEAR_DAY="1"

# LDAP server

LDAP_HOST="ldap.example.com"

# LDAP_PORT=389

# LDAP port

#LDAP_PORT="389"

# Use TLS for LDAP

#LDAP_TLS=false

# CA certificate file to trust when using LDAP over TLS, by default the system cert store is used

#LDAP_CA_CERTS_FILE=

LDAP_BIND_DN="cn=myuser,ou=mygroup,ou=users,dc=ldap,dc=example,dc=com"

LDAP_BIND_PASSWORD="myuserpassword"

# LDAP bind DN

LDAP_BIND_DN="cn=wybory,ou=users,dc=ldap,dc=example,dc=com"

# LDAP bind password

LDAP_BIND_PASSWORD="password"

# LDAP connection and search timeout

#LDAP_TIMEOUT="30"

LDAP_GROUP_SEARCH_BASE_TEMPLATE="ou=%(group)s,ou=users,dc=ad,dc=staszic,dc=waw,dc=pl"

# LDAP search base and filter templates when searching for voters, use %(group)s as the voter group placeholder

LDAP_GROUP_SEARCH_BASE_TEMPLATE="ou=%(group)s,ou=users,dc=ldap,dc=example,dc=com"

LDAP_GROUP_FILTER_TEMPLATE="(&(objectClass=posixAccount)(memberOf=cn=%(group)s,ou=users,dc=ldap,dc=example,dc=com))"

# LDAP field names for voter name and email

LDAP_NAME_FIELD="displayName"

LDAP_EMAIL_FIELD="mail"

        else ldap3.AUTO_BIND_NO_TLS,

        client_strategy=ldap3.SAFE_SYNC,

        raise_exceptions=True,

        receive_timeout=settings.LDAP_TIMEOUT,

    ) as conn:

        for group in set(groups):

            try: