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ESP8266WebServer - Drop inactive connection when another is waiting to improve page load time (#8216)

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* ESP8266WebServer - drop current HC_WAIT_READ connection sooner when another has data

Safari sometimes opens two connections when loading a page and only
sends a request over the second one, resulting in a 5 second wait
(HTTP_MAX_DATA_WAIT) before the request is processed. This commit
drops the current connection after 30ms (HTTP_MAX_DATA_AVAILABLE_WAIT)
when there is a new connection with data available or the buffer of
pending TCP clients is full (currently 5).
This commit is contained in:
aWZHY0yQH81uOYvH
2021-10-27 13:28:47 -07:00
committed by GitHub
parent ac4af38c09
commit f8de3fb464
6 changed files with 61 additions and 5 deletions
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19
libraries/ESP8266WiFi/src/WiFiServer.cpp
View File

@ -109,6 +109,25 @@ bool WiFiServer::hasClient() {
return false;
}
size_t WiFiServer::hasClientData() {
ClientContext *next = _unclaimed;
while (next) {
size_t s = next->getSize();
// return the amount of data available from the first connection that has any
if (s) return s;
next = next->next();
}
return 0;
}
bool WiFiServer::hasMaxPendingClients() {
#if TCP_LISTEN_BACKLOG
return ((struct tcp_pcb_listen *)_listen_pcb)->accepts_pending >= MAX_PENDING_CLIENTS_PER_PORT;
#else
return false;
#endif
}
WiFiClient WiFiServer::available(byte* status) {
(void) status;
if (_unclaimed) {

7
libraries/ESP8266WiFi/src/WiFiServer.h
View File

@ -82,6 +82,13 @@ public:
virtual ~WiFiServer() {}
WiFiClient available(uint8_t* status = NULL);
bool hasClient();
// hasClientData():
// returns the amount of data available from the first client
// or 0 if there is none
size_t hasClientData();
// hasMaxPendingClients():
// returns true if the queue of pending clients is full
bool hasMaxPendingClients();
void begin();
void begin(uint16_t port);
void begin(uint16_t port, uint8_t backlog);