The following string representing an incorrectly formatted HTTP$/1\mathrm{.}1$ Request

message for the default homepage is sent to the TU Dublin webserver:

GET $/$HTTP$/1\mathrm{.}1\frac{\frac{?}{?}}{r}\frac{?}{?}$

$Co$ection$-$close$\frac{d}{\frac{?}{?}}\frac{r}{?}$

$($i$)$ There are five errors associated with this string; four of which relate to syntax

and one relating to an omitted compulsory data element. Rewrite the HTTP

Request in its proper form.

$(5$ marks$)$

$($ii$)$ Assume the properly formatted HTTP GET Request from $($i$)$ above is sent to a

HTTP server, explain the origins of the problem associated with the use of the

following implementation of the recv$()$ primitive becoming 'stuck' inside the

while$()$ loop and, explain how this problem might usefully be addressed.

$($iii$)$ Given that the HTTP Response message will likely include a Body section and

consequently the solution to the problem associated with $)$ primitive

outlined in $($ii$)$ above will not work efficiently, identify the appropriate HTTP

Header that should be returned to assist the client in addressing this problem

and, outline a high$-$level solution to the problem that uses this Header value

$($code not required$).$

$(10$ marks$)$