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Make slight SSL performance improvements

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This commit is contained in:
Justine Tunney 2021-07-08 21:54:21 -07:00
parent 4178896aa0
commit fe881982b5
6 changed files with 100 additions and 19 deletions
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33
examples/curl.c
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@ -9,6 +9,7 @@
#endif
#include "libc/bits/safemacros.internal.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/iovec.h"
#include "libc/dce.h"
#include "libc/dns/dns.h"
#include "libc/errno.h"
@ -91,14 +92,32 @@ static int Socket(int family, int type, int protocol) {
static int TlsSend(void *c, const unsigned char *p, size_t n) {
int rc;
VERBOSEF("begin send %zu", n);
CHECK_NE(-1, (rc = write(*(int *)c, p, n)));
VERBOSEF("end send %zu", n);
return rc;
}
static int TlsRecv(void *c, unsigned char *p, size_t n, uint32_t t) {
int rc;
CHECK_NE(-1, (rc = read(*(int *)c, p, n)));
return rc;
static int TlsRecv(void *c, unsigned char *p, size_t n, uint32_t o) {
int r;
struct iovec v[2];
static unsigned a, b;
static unsigned char t[4096];
if (a < b) {
r = MIN(n, b - a);
memcpy(p, t + a, r);
if ((a += r) == b) a = b = 0;
return r;
}
v[0].iov_base = p;
v[0].iov_len = n;
v[1].iov_base = t;
v[1].iov_len = sizeof(t);
VERBOSEF("begin recv %zu", n + sizeof(t) - b);
CHECK_NE(-1, (r = readv(*(int *)c, v, 2)));
VERBOSEF("end recv %zu", r);
if (r > n) b = r - n;
return MIN(n, r);
}
static void TlsDebug(void *c, int v, const char *f, int l, const char *s) {
@ -137,14 +156,14 @@ static int AppendFmt(struct Buffer *b, const char *fmt, ...) {
va_start(va, fmt);
va_copy(vb, va);
n = vsnprintf(b->p + b->i, b->n - b->i, fmt, va);
if (n >= b->n - b->i) {
if (b->i + n + 1 > b->n) {
do {
if (b->n) {
b->n += b->n >> 1;
} else {
b->n = 16;
}
} while (b->i + n > b->n);
} while (b->i + n + 1 > b->n);
b->p = realloc(b->p, b->n);
vsnprintf(b->p + b->i, b->n - b->i, fmt, vb);
}
@ -174,6 +193,7 @@ int main(int argc, char *argv[]) {
case 'q':
break;
case 'v':
++__log_level;
break;
case 'I':
method = kHttpHead;
@ -262,6 +282,7 @@ int main(int argc, char *argv[]) {
"Connection: close\r\n"
"User-Agent: %s\r\n",
kHttpMethod[method], _gc(EncodeUrl(&url, 0)), host, port, agent);
fprintf(stderr, "%`'.*s\n", request.i, request.p);
for (int i = 0; i < headers.n; ++i) {
AppendFmt(&request, "%s\r\n", headers.p[i]);
}