Not only does xend_internal open a new connection for every HTTP request it makes, but it also reads the headers in as single bytes (but the body as a whole, presumably once it has Content-Length):
connect(15, {sa_family=AF_FILE, path="/var/lib/xend/xend-socket"}, 27) = 0
write(15, "GET ", 4) = 4
write(15, "/xend/node/", 11) = 11
write(15, " HTTP/1.1\r\n", 11) = 11
write(15, "Host: localhost:8000\r\nAccept-Enc"..., 100) = 100
read(15, "H", 1) = 1
read(15, "T", 1) = 1
read(15, "T", 1) = 1
read(15, "P", 1) = 1
read(15, "/", 1) = 1
read(15, "1", 1) = 1
read(15, ".", 1) = 1
read(15, "1", 1) = 1
read(15, " ", 1) = 1
read(15, "2", 1) = 1
read(15, "0", 1) = 1
read(15, "0", 1) = 1
read(15, " ", 1) = 1
read(15, "O", 1) = 1
read(15, "K", 1) = 1
read(15, "\r", 1) = 1
read(15, "\n", 1) = 1
read(15, "C", 1) = 1
read(15, "o", 1) = 1
read(15, "n", 1) = 1
read(15, "t", 1) = 1
[...]
read(15, "\n", 1) = 1
read(15, "\r", 1) = 1
read(15, "\n", 1) = 1
read(15, "(node (system Linux) (host oiras"..., 747) = 747
close(15) = 0
Rich.
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