xmlHttp = new XMLHttpRequest();
xmlHttp.open("POST", url, true);
xmlHttp.send(String.fromCharCode(0xf5));

#sock is a socket object
header = readline(sock)
contl = 0
while(len(header) > 0):
    header = readline(sock)
    dat = header.split(': ')
    if(len(dat) >= 2):
        if(dat[0] == 'Content-Length'):
            contl = int(float(dat[1]))
print sock.recv(contl)

def readLine(sock):
    s = ""
    while(True):
        a = sock.recv(1)
        if(len(a) < 1):
            return s
        elif(a == 'n'):
            return s
        elif(a == 'r'):
            b = sock.recv(1)
            if(b == 'n'):
                return s
            else:
                s += a + b
        else:
            s += a

>>> u'xf5'.encode('utf-8')
'xc3xb5'

>>> b'xc3xb5'.decode('utf-8')
u'xf5'