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Error: Outbound packet larger than maximum message size 65535 #1396

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Error: Outbound packet larger than maximum message size 65535#1396
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enobufs
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@enobufs
enobufs
opened on Sep 3, 2020

Your environment.

  • Version: pion/webrtc@v2.2.24
  • Browser: n/a

What did you do?

Try to send data channel message with length 64KB

What did you expect?

Successfully sent.

What happened?

Errored with:

 Outbound packet larger than maximum message size 65535

Here's where the error originates.

There are three problems:

  1. By default it should allow 64KB
  2. SCTPTransport has remoteMaxMessageSize, but this doesn't get propagated to pion/sctp
  3. remoteMaxMessageSize should be updated based on max-message-size in SDP.

@Sean-Der do we parse max-message-size in SDP, and do we send it?

Activity

  1. enobufs
    added 3 commits that reference this issue on Sep 8, 2020

    Set default MaxMessageSize to 65536

    f323feb

    Set default MaxMessageSize to 65536

    d1f92a8

    Set default MaxMessageSize to 65536

    25c274f

  2. enobufs commented on Sep 12, 2020

    @enobufs
    enobufs
    on Sep 12, 2020
    MemberAuthor

    @Sean-Der I have fixed the default value at pion/sctp@v1.7.10. (the number 1)

    In the change, I also added:

    • MaxMessageSize param to sctp.Config struct
    • MaxMessageSize() to sctp.Association
    • SetMaxMessageSize() to sctp.Association

    So that we could accomplish 2 and 3 I mentioned earlier at pion/webrtc (SctpTransport).

  3. enobufs
    added a commit that references this issue on Sep 14, 2020

    Update pion/sctp and pion/datachannel vers

    d4ce7f3
  4. tarrencev
    added
    bugSomething isn't working
    on Sep 16, 2020
  5. tarrencev
    assigned
    enobufs
    on Sep 16, 2020
  6. Sean-Der
    added this to the milestone on Jan 23, 2022
  7. Sean-Der
    removed this from the milestone on May 22, 2022

  8. Sean-Der commented on Mar 6, 2025

    @Sean-Der
    Sean-Der
    on Mar 6, 2025
    Member

    Fixed with e4ff415

  9. Sean-Der
    closed this as completedon Mar 6, 2025
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