Closed Unassigned: extract_utf16string doesn't return the whole body [387]

```
void test_pageGetUTF8(std::wstring url){
http_client client(url);
auto query = uri_builder().append_query(L"q", L"test").to_string();
client.request(methods::GET, query)
.then([](http_response response)->pplx::task<std::string>
{
std::string rv;
auto status = response.status_code();
std::cout << "Status is: " << status << std::endl;
if (status == status_codes::OK)
{
response.content_ready().get();
size_t len = response.headers().content_length();
std::cout << "Length is: " << len << std::endl;
std::string data = response.extract_utf8string(false).get();
if (data.size() == len){
rv = "OK";//data;
}
else{
rv = "Failed to retrieve the whole body";
}
}
else{
rv = "error ";
rv += status;
}
return pplx::task_from_result(rv);
})
.then([](pplx::task<std::string> data){
std::cout << data.get() << std::endl;
}).wait();
}

void test_pageGetUTF16(std::wstring url){
http_client client(url);
auto query = uri_builder().append_query(L"q", L"test").to_string();
client.request(methods::GET, query)
.then([](http_response response)->pplx::task<utility::string_t>
{
utility::string_t rv;
auto status = response.status_code();
std::wcout << "Status is: " << status << std::endl;
if (status == status_codes::OK)
{
response.content_ready().get();
size_t len = response.headers().content_length();
std::cout << "Length is: " << len <<std::endl;
utility::string_t data = response.extract_utf16string(false).get();
if (data.size() == len){
rv = U("OK");//data;
}
else{
rv = U("Failed to retrieve the whole body");
}
}
else{
rv = U("error ");
rv += status;
}
return pplx::task_from_result(rv);
})
.then([](pplx::task<utility::string_t> data){
std::wcout << data.get() << std::endl <<std::endl;
}).wait();
}

int _tmain(int argc, _TCHAR* argv[])
{
test_pageGetUTF8(U("http://www.codeproject.com"));
test_pageGetUTF16(U("http://www.codeproject.com"));

test_pageGetUTF8(U("https://duckduckgo.com/"));
test_pageGetUTF16(U("https://duckduckgo.com/"));

return 0;
}
```

It works fine when tested with the second URL (both utf8 and utf16) but when tested with codeproject.com, the utf16 version fails to retrieve the whole body (usually around 20 chars shorter)