MINOR: http: Add function to get port part of a host
http_get_host_port() function can be used to get the port part of a host. It
will be used to get the port of an uri authority or a host header
value. This function only look for a port starting from the end of the
host. It is the caller responsibility to call it with a valid host value. An
indirect string is returned.
diff --git a/include/haproxy/http.h b/include/haproxy/http.h
index a213f5b..aba8e65 100644
--- a/include/haproxy/http.h
+++ b/include/haproxy/http.h
@@ -36,6 +36,7 @@
enum http_meth_t find_http_meth(const char *str, const int len);
int http_get_status_idx(unsigned int status);
const char *http_get_reason(unsigned int status);
+struct ist http_get_host_port(const struct ist host);
int http_validate_scheme(const struct ist schm);
struct ist http_parse_scheme(struct http_uri_parser *parser);
struct ist http_parse_authority(struct http_uri_parser *parser, int no_userinfo);
diff --git a/src/http.c b/src/http.c
index bc0a808..7a7fb0c 100644
--- a/src/http.c
+++ b/src/http.c
@@ -478,6 +478,24 @@
}
}
+/* Returns the ist string corresponding to port part (without ':') in the host
+ * <host> or IST_NULL if not found.
+*/
+struct ist http_get_host_port(const struct ist host)
+{
+ char *start, *end, *ptr;
+
+ start = istptr(host);
+ end = istend(host);
+ for (ptr = end; ptr > start && isdigit((unsigned char)*--ptr););
+
+ /* no port found */
+ if (likely(*ptr != ':' || ptr+1 == end || ptr == start))
+ return IST_NULL;
+
+ return istnext(ist2(ptr, end - ptr));
+}
+
/* Returns non-zero if the scheme <schm> is syntactically correct according to
* RFC3986#3.1, otherwise zero. It expects only the scheme and nothing else
* (particularly not the following "://").