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OBJECT ffi_getpeername(STATE, int s, int reverse_lookup) { OBJECT host; OBJECT address; int error = 0; struct sockaddr_storage addr; socklen_t len = sizeof addr; char hbuf[1024]; char pbuf[1024]; error = getpeername(s, (struct sockaddr*)&addr, &len); if(error) { printf("ffi_getpeername ERROR: %s\n", gai_strerror(error)); return Qnil; } // Get the numeric name info error = getnameinfo((struct sockaddr*)&addr, len, hbuf, sizeof(hbuf), pbuf, sizeof(pbuf), NI_NUMERICHOST | NI_NUMERICSERV); if(error) { printf("ffi_getpeername ERROR: %s\n", gai_strerror(error)); return Qnil; } address = string_new(state, hbuf); if(reverse_lookup) { // Resolve the DNS name error = getnameinfo((struct sockaddr*)&addr, len, hbuf, sizeof(hbuf), NULL, 0, 0); if(error) { printf("ffi_getpeername ERROR: %s\n", gai_strerror(error)); return Qnil; } } host = string_new(state, hbuf); // Return the two addresses as a tuple of Rubinius strings return tuple_new2(state, 2, host, address); }

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