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Add more association logic, RFC stuff

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This commit is contained in:
John R. Bradley
2018-07-09 17:55:33 -05:00
committed by Sean DuBois
parent e8b58bf959
commit 93fa676740
6 changed files with 185 additions and 15 deletions
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33
internal/sctp/chunk_init.go
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@@ -72,8 +72,8 @@ func (i *Init) Unmarshal(raw []byte) error {
return err
}
if i.Type != INIT {
return errors.Errorf("ChunkType is not of type INIT, actually is %s", i.Type.String())
if i.typ != INIT {
return errors.Errorf("ChunkType is not of type INIT, actually is %s", i.typ.String())
} else if len(i.Value) < initChunkMinLength {
return errors.Errorf("Chunk Value isn't long enough for mandatory parameters exp: %d actual: %d", initChunkMinLength, len(i.Value))
}
@@ -151,3 +151,32 @@ func (i *Init) Unmarshal(raw []byte) error {
func (i *Init) Marshal() ([]byte, error) {
return nil, errors.Errorf("Unimplemented")
}
func (i *Init) Check() error {
// Defines the maximum number of streams the sender of this INIT
// chunk allows the peer end to create in this association. The
// value 0 MUST NOT be used.
//
// Note: There is no negotiation of the actual number of streams but
// instead the two endpoints will use the min(requested, offered).
// See Section 5.1.1 for details.
//
// Note: A receiver of an INIT with the MIS value of 0 SHOULD abort
// the association.
if i.numInboundStreams == 0 {
return errors.New("INIT inbound stream request must be > 0")
}
// Defines the number of outbound streams the sender of this INIT
// chunk wishes to create in this association. The value of 0 MUST
// NOT be used.
//
// Note: A receiver of an INIT with the OS value set to 0 SHOULD
// abort the association.
if i.numOutboundStreams == 0 {
return errors.New("INIT outbound stream request must be > 0")
}
return nil
}