A communication system, method and a non-transitory computer-readable storage medium which is operable to support HTTP-based communication, wherein the communication system is operable to establish a two-way real-time communication link between two nodes of the communication system by employing a combination of GET and POST methods associated with HTTP, and wherein data exchange via the communication link is implemented in a chunked manner and/or as a series of multipart data blocks, wherein a maximum segment size (MSS) of data chunks and/or multipart data blocks communicated through the communication link is optimized as a function of a communication network capability supporting the communication link.