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73 lines
2.6 KiB
73 lines
2.6 KiB
// Copyright 2020 Justine Alexandra Roberts Tunney
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Global Settings. You can change these at startup to fine tune
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// certain behaviors.
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package dialog
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import (
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"os"
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"time"
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)
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var (
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// How often to check for shutdowns.
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DeathClock = 200 * time.Millisecond
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// SIP egress msg length must not exceed me. If you are brave and use jumbo
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// frames you can increase this value.
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MTU = 1450
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// Maximum number SRV/Redirects/Etc. to entertain. More accurately, this is
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// the maximum number of time's we're allowed to enter the "calling" state.
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MaxAttempts = 10
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// This is how long to wait (in nanoseconds) for a 100 trying response before
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// retransmitting the invite. Multiply this by RetransmitAttempts and that's
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// how long it'll be before we try another server. That might seem like a
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// very long time but happy networks facilitate fast failover by sending hard
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// errors (ICMP, 480, 500-599)
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TryingTimeout = 500 * time.Millisecond
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// How many times to attempt to retransmit before moving on.
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RetransmitAttempts = 2
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// Number of nanoseconds (across all attempts) before we give up trying to
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// connect a call. This doesn't mean the call has to have been answered but
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// rather has moved beyond the "calling" state and doesn't go back.
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GiveupTimeout = 3 * time.Second
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// TODO(jart): How long to wait before refreshing a call with a re-INVITE
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// message.
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RefreshTimeout = 15 * time.Minute
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// How many times are proxies allowed to forward a message.
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MaxForwards int = 70
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// Approx. how long the transaction engine remembers old Call-IDs to prevent
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// a retransmit from accidentally opening a new dialog.
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CallIDBanDuration = 35 * time.Second
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// Approx. how often to sweep old transactions from ban list.
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CallIDBanSweepDuration = 5 * time.Second
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// Should the transport layer add timestamps to Via headers (µsi/µse = UTC
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// microseconds since unix epoch ingress/egress).
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ViaTimestampTagging = true
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// Use this feature to print out raw sip messages the moment they are
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// sent/received by the transport layer.
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TransportTrace = (os.Getenv("TPORT_LOG") == "true")
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)
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