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[core] accept "HTTP/2.0", "HTTP/3.0" from backends (fixes #3031) 

accept "HTTP/2.0" and "HTTP/3.0" NPH from naive non-proxy backends

(thx flynn)

x-ref:
  "uwsgi fails with HTTP/2"
  https://redmine.lighttpd.net/issues/3031
This commit is contained in:
Glenn Strauss 2020-11-09 18:18:18 -05:00
parent c0e2667b71
commit 169d8d3608
1 changed files with 6 additions and 4 deletions
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10
src/http-header-glue.c
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@ -1091,9 +1091,11 @@ static int http_response_process_headers(request_st * const r, http_response_opt
ns[0] = '\0';
if (ns > s && ns[-1] == '\r') ns[-1] = '\0';
if (0 == line && 0 == strncmp(s, "HTTP/1.", 7)) {
if (0 == line && (ns - s) >= 12 && 0 == memcmp(s, "HTTP/", 5)) {
/* non-parsed headers ... we parse them anyway */
if ((s[7] == '1' || s[7] == '0') && s[8] == ' ') {
/* (accept HTTP/2.0 and HTTP/3.0 from naive non-proxy backends) */
if ((s[5] == '1' || opts->backend != BACKEND_PROXY) && s[6] == '.'
&& (s[7] == '1' || s[7] == '0') && s[8] == ' ') {
/* after the space should be a status code for us */
int status = http_header_str_to_code(s+9);
if (status >= 100 && status < 1000) {
@ -1303,8 +1305,8 @@ handler_t http_response_parse_headers(request_st * const r, http_response_opts *
do {
blen = buffer_string_length(b);
/*("HTTP/1.1 200 " is at least 13 chars + \r\n)*/
const int is_nph = (blen > 12 && 0 == memcmp(b->ptr, "HTTP/1.", 7));
/*("HTTP/1.1 200 " is at least 13 chars + \r\n, but accept w/o final ' ')*/
const int is_nph = (blen >= 12 && 0 == memcmp(b->ptr, "HTTP/", 5));
int is_header_end = 0;
uint32_t i = 0;