static _read()

in src/extensions.js [120:148]

• 29 lines of code
• 5 McCabe index (conditional complexity)

  static _read(messageType, buf) {
    let identities = null, binders = null, selectedIdentity = null;
    switch (messageType) {
      case HANDSHAKE_TYPE.CLIENT_HELLO:
        identities = []; binders = [];
        buf.readVector16(buf => {
          const identity = buf.readVectorBytes16();
          buf.readBytes(4); // Skip over the ticket age.
          identities.push(identity);
        });
        buf.readVector16(buf => {
          const binder = buf.readVectorBytes8();
          if (binder.byteLength < HASH_LENGTH) {
            throw new TLSError(ALERT_DESCRIPTION.ILLEGAL_PARAMETER);
          }
          binders.push(binder);
        });
        if (identities.length !== binders.length) {
          throw new TLSError(ALERT_DESCRIPTION.ILLEGAL_PARAMETER);
        }
        break;
      case HANDSHAKE_TYPE.SERVER_HELLO:
        selectedIdentity = buf.readUint16();
        break;
      default:
        throw new TLSError(ALERT_DESCRIPTION.ILLEGAL_PARAMETER);
    }
    return new this(identities, binders, selectedIdentity);
  }