The solutions of a number of well known boundary value problems of complex analysis (for instance, the Riemann boundary value problem) can be found in the form of curvilinear integrals over the boundaries of domains under consideration. In this connection the classical results on that problems concern domains with rectifiable boundaries only. On the other hand, the boundary value problems themselves keep their sense for non-rectifiable boundaries. This is the reason for recent development of theory of generalized integration over non-rectifiable plane Jordan curves and arcs. The existence of that generalized integrations over non-rectifiable arcs depends on certain geometry properties of the arcs in neighborhoods of their ends. Here we consider connections of generalized integration and so called torsions of the path of integration at its end points.