code: protected void releaseProxyWriteBuffer() {
          WsByteBuffer buffer = connLink.getWriteInterface().getBuffer();
          if (null != buffer) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                  Tr.debug(tc, "Releasing proxy write buffer: " + buffer);
              }
              buffer.release();
              connLink.getWriteInterface().setBuffer(null);
          }
      }
docs: Release the proxy connect write buffer.