fix a typo in cookie

Author: lihuiba

net/http/client.h

@@ -174,7 +174,7 @@ class Client : public Object {
     std::vector<IPAddr> m_bind_ips;
 };
 
-//A Client without cookie_jar would ignore all response-header "Set-Cookies"
+//A Client without cookie_jar would ignore all response-header "Set-Cookie"
 Client* new_http_client(ICookieJar *cookie_jar = nullptr, TLSContext *tls_ctx = nullptr);
 
 ICookieJar* new_simple_cookie_jar();

net/http/cookie_jar.cpp

@@ -55,8 +55,8 @@ class SimpleCookie {
 public:
     unordered_map_string_key<SimpleValue> m_kv;
     int get_cookies_from_headers(Message* message)  {
-        auto it = message->headers.find("Set-Cookies");
-        while (it != message->headers.end() && it.first() == "Set-Cookies") {
+        auto it = message->headers.find("Set-Cookie");
+        while (it != message->headers.end() && it.first() == "Set-Cookie") {
             LOG_INFO("get cookie");
             auto Cookies = it.second();
             Parser p(Cookies);

net/http/test/cookie_jar_test.cpp

@@ -49,7 +49,7 @@ class ResponseHeaderAdaptor : public Response {
 };
 
 ResponseHeaderAdaptor* new_resp(std::string text) {
-    text = "HTTP/1.1 200 ok\r\nSet-Cookies: " + text + "\r\n\r\n";
+    text = "HTTP/1.1 200 ok\r\nSet-Cookie: " + text + "\r\n\r\n";
     ResponseHeaderAdaptor *ret = new ResponseHeaderAdaptor();
     memcpy(ret->m_buf, text.data(), text.size());
     ret->append_bytes(text.size());