63 lines
1.1 KiB
C
63 lines
1.1 KiB
C
|
|
/*
|
|
* Copyright (C) Nginx, Inc.
|
|
* Copyright (C) Valentin V. Bartenev
|
|
*/
|
|
|
|
|
|
#include <ngx_config.h>
|
|
#include <ngx_core.h>
|
|
#include <ngx_http.h>
|
|
|
|
|
|
u_char *ngx_http_v2_write_int(u_char *pos, ngx_uint_t prefix,
|
|
ngx_uint_t value);
|
|
|
|
|
|
u_char *
|
|
ngx_http_v2_string_encode(u_char *dst, u_char *src, size_t len, u_char *tmp,
|
|
ngx_uint_t lower)
|
|
{
|
|
size_t hlen;
|
|
|
|
hlen = ngx_http_huff_encode(src, len, tmp, lower);
|
|
|
|
if (hlen > 0) {
|
|
*dst = NGX_HTTP_V2_ENCODE_HUFF;
|
|
dst = ngx_http_v2_write_int(dst, ngx_http_v2_prefix(7), hlen);
|
|
return ngx_cpymem(dst, tmp, hlen);
|
|
}
|
|
|
|
*dst = NGX_HTTP_V2_ENCODE_RAW;
|
|
dst = ngx_http_v2_write_int(dst, ngx_http_v2_prefix(7), len);
|
|
|
|
if (lower) {
|
|
ngx_strlow(dst, src, len);
|
|
return dst + len;
|
|
}
|
|
|
|
return ngx_cpymem(dst, src, len);
|
|
}
|
|
|
|
|
|
u_char *
|
|
ngx_http_v2_write_int(u_char *pos, ngx_uint_t prefix, ngx_uint_t value)
|
|
{
|
|
if (value < prefix) {
|
|
*pos++ |= value;
|
|
return pos;
|
|
}
|
|
|
|
*pos++ |= prefix;
|
|
value -= prefix;
|
|
|
|
while (value >= 128) {
|
|
*pos++ = value % 128 + 128;
|
|
value /= 128;
|
|
}
|
|
|
|
*pos++ = (u_char) value;
|
|
|
|
return pos;
|
|
}
|