module WebSocket::Mask
Public Class Methods
mask(p1, p2)
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VALUE method_websocket_mask(VALUE self, VALUE payload, VALUE mask) { char *payload_s, *mask_s, *unmasked_s; long i, n; VALUE unmasked; if (mask == Qnil || RSTRING_LEN(mask) != 4) { return payload; } payload_s = RSTRING_PTR(payload); mask_s = RSTRING_PTR(mask); n = RSTRING_LEN(payload); unmasked = rb_str_new(0, n); unmasked_s = RSTRING_PTR(unmasked); for (i = 0; i < n; i++) { unmasked_s[i] = payload_s[i] ^ mask_s[i % 4]; } return unmasked; }