//Callback called when the data on a socket has been successfully sent.
static void ICACHE_FLASH_ATTR httpdSentCb(void *arg) {
debugConn(arg, "httpdSentCb");
struct espconn* pCon = (struct espconn *)arg;
HttpdConnData *conn = (HttpdConnData *)pCon->reverse;
if (conn == NULL) return; // aborted connection
char sendBuff[MAX_SENDBUFF_LEN];
httpdSetOutputBuffer(conn, sendBuff, sizeof(sendBuff));
if (conn->cgi == NULL) { //Marked for destruction?
//os_printf("Closing 0x%p/0x%p->0x%p\n", arg, conn->conn, conn);
espconn_disconnect(conn->conn); // we will get a disconnect callback
return; //No need to call httpdFlush.
}
int r = conn->cgi(conn); //Execute cgi fn.
if (r == HTTPD_CGI_DONE) {
conn->cgi = NULL; //mark for destruction.
}
if (r == HTTPD_CGI_NOTFOUND || r == HTTPD_CGI_AUTHENTICATED) {
DBG("%sERROR! Bad CGI code %d\n", connStr, r);
conn->cgi = NULL; //mark for destruction.
}
httpdFlush(conn);
}
static void ICACHE_FLASH_ATTR httpdDisconCb(void *arg) {
debugConn(arg, "httpdDisconCb");
struct espconn* pCon = (struct espconn *)arg;
HttpdConnData *conn = (HttpdConnData *)pCon->reverse;
if (conn == NULL) return; // aborted connection
httpdRetireConn(conn);
}
static void ICACHE_FLASH_ATTR httpdDisconCb(void *arg) {
debugConn(arg, "httpdDisconCb");
HttpdConnData *conn = httpdFindConnData(arg);
if (conn == NULL) return;
if (conn->cgi != NULL) conn->cgi(conn); // free cgi data
httpdRetireConn(conn);
}
//Callback called when the data on a socket has been successfully sent.
static void ICACHE_FLASH_ATTR httpdSentCb(void *arg) {
debugConn(arg, "httpdSentCb");
int r;
HttpdConnData *conn=httpdFindConnData(arg);
char sendBuff[MAX_SENDBUFF_LEN];
if (conn==NULL) return;
conn->priv->sendBuff=sendBuff;
conn->priv->sendBuffLen=0;
if (conn->cgi==NULL) { //Marked for destruction?
//os_printf("Closing 0x%p/0x%p->0x%p\n", arg, conn->conn, conn);
espconn_disconnect(conn->conn);
//httpdRetireConn(conn); // can't call this, we will get a diconnect callback!
return; //No need to call xmitSendBuff.
}
r=conn->cgi(conn); //Execute cgi fn.
if (r==HTTPD_CGI_DONE) {
conn->cgi=NULL; //mark for destruction.
}
if (r==HTTPD_CGI_NOTFOUND || r==HTTPD_CGI_AUTHENTICATED) {
os_printf("%s ERROR! CGI fn returns code %d after sending data! Bad CGI!\n", connStr, r);
conn->cgi=NULL; //mark for destruction.
}
xmitSendBuff(conn);
}
// Callback indicating a failure in the connection. "Recon" is probably intended in the sense
// of "you need to reconnect". Sigh... Note that there is no DisconCb after ReconCb
static void ICACHE_FLASH_ATTR httpdReconCb(void *arg, sint8 err) {
debugConn(arg, "httpdReconCb");
struct espconn* pCon = (struct espconn *)arg;
HttpdConnData *conn = (HttpdConnData *)pCon->reverse;
if (conn == NULL) return; // aborted connection
DBG("%s***** reset, err=%d\n", connStr, err);
httpdRetireConn(conn);
}
// Callback indicating a failure in the connection. "Recon" is probably intended in the sense
// of "you need to reconnect". Sigh...
static void ICACHE_FLASH_ATTR httpdReconCb(void *arg, sint8 err) {
debugConn(arg, "httpdReconCb");
HttpdConnData *conn = httpdFindConnData(arg);
os_printf("%s reset, err=%d\n", connStr, err);
if (conn == NULL) return;
conn->conn = NULL; // don't tr to send anything, the SDK crashes...
if (conn->cgi != NULL) conn->cgi(conn); // free cgi data
httpdRetireConn(conn);
}
//Callback called when there's data available on a socket.
static void ICACHE_FLASH_ATTR httpdRecvCb(void *arg, char *data, unsigned short len) {
debugConn(arg, "httpdRecvCb");
struct espconn* pCon = (struct espconn *)arg;
HttpdConnData *conn = (HttpdConnData *)pCon->reverse;
if (conn == NULL) return; // aborted connection
char sendBuff[MAX_SENDBUFF_LEN];
httpdSetOutputBuffer(conn, sendBuff, sizeof(sendBuff));
//This is slightly evil/dirty: we abuse conn->post->len as a state variable for where in the http communications we are:
//<0 (-1): Post len unknown because we're still receiving headers
//==0: No post data
//>0: Need to receive post data
//ToDo: See if we can use something more elegant for this.
for (int x = 0; x<len; x++) {
if (conn->post->len<0) {
//This byte is a header byte.
if (conn->priv->headPos != MAX_HEAD_LEN) conn->priv->head[conn->priv->headPos++] = data[x];
conn->priv->head[conn->priv->headPos] = 0;
//Scan for /r/n/r/n. Receiving this indicate the headers end.
if (data[x] == '\n' && (char *)os_strstr(conn->priv->head, "\r\n\r\n") != NULL) {
//Indicate we're done with the headers.
conn->post->len = 0;
conn->post->multipartBoundary = NULL;
//Reset url data
conn->url = NULL;
//Iterate over all received headers and parse them.
char *p = conn->priv->head;
while (p<(&conn->priv->head[conn->priv->headPos - 4])) {
char *e = (char *)os_strstr(p, "\r\n"); //Find end of header line
if (e == NULL) break; //Shouldn't happen.
e[0] = 0; //Zero-terminate header
httpdParseHeader(p, conn); //and parse it.
p = e + 2; //Skip /r/n (now /0/n)
}
//If we don't need to receive post data, we can send the response now.
if (conn->post->len == 0) {
httpdProcessRequest(conn);
}
}
}
else if (conn->post->len != 0) {
//This byte is a POST byte.
conn->post->buff[conn->post->buffLen++] = data[x];
conn->post->received++;
if (conn->post->buffLen >= conn->post->buffSize || conn->post->received == conn->post->len) {
//Received a chunk of post data
conn->post->buff[conn->post->buffLen] = 0; //zero-terminate, in case the cgi handler knows it can use strings
//Send the response.
httpdProcessRequest(conn);
conn->post->buffLen = 0;
}
}
}
}
static void ICACHE_FLASH_ATTR httpdConnectCb(void *arg) {
debugConn(arg, "httpdConnectCb");
struct espconn *conn = arg;
// Find empty conndata in pool
int i;
for (i = 0; i<MAX_CONN; i++) if (connData[i].conn == NULL) break;
//DBG("Con req, conn=%p, pool slot %d\n", conn, i);
if (i == MAX_CONN) {
os_printf("%sHTTP: conn pool overflow!\n", connStr);
espconn_disconnect(conn);
return;
}
#if 0
int num = 0;
for (int j = 0; j<MAX_CONN; j++) if (connData[j].conn != NULL) num++;
DBG("%sConnect (%d open)\n", connStr, num + 1);
#endif
connData[i].priv = &connPrivData[i];
connData[i].conn = conn;
conn->reverse = connData+i;
connData[i].priv->headPos = 0;
esp_tcp *tcp = conn->proto.tcp;
os_sprintf(connData[i].priv->from, "%d.%d.%d.%d:%d", tcp->remote_ip[0], tcp->remote_ip[1],
tcp->remote_ip[2], tcp->remote_ip[3], tcp->remote_port);
connData[i].post = &connPostData[i];
connData[i].post->buff = NULL;
connData[i].post->buffLen = 0;
connData[i].post->received = 0;
connData[i].post->len = -1;
connData[i].startTime = system_get_time();
espconn_regist_recvcb(conn, httpdRecvCb);
espconn_regist_reconcb(conn, httpdReconCb);
espconn_regist_disconcb(conn, httpdDisconCb);
espconn_regist_sentcb(conn, httpdSentCb);
espconn_set_opt(conn, ESPCONN_REUSEADDR | ESPCONN_NODELAY);
}
static void ICACHE_FLASH_ATTR httpdConnectCb(void *arg) {
debugConn(arg, "httpdConnectCb");
struct espconn *conn=arg;
int i;
//Find empty conndata in pool
for (i=0; i<MAX_CONN; i++) if (connData[i].conn==NULL) break;
//os_printf("Con req, conn=%p, pool slot %d\n", conn, i);
if (i==MAX_CONN) {
os_printf("%s Aiee, conn pool overflow!\n", connStr);
espconn_disconnect(conn);
return;
}
int num = 0;
for (int j=0; j<MAX_CONN; j++) if (connData[j].conn != NULL) num++;
os_printf("%s Connect (%d open)\n", connStr, num+1);
connData[i].priv=&connPrivData[i];
connData[i].conn=conn;
connData[i].remote_port = conn->proto.tcp->remote_port;
os_memcpy(connData[i].remote_ip, conn->proto.tcp->remote_ip, 4);
connData[i].priv->headPos=0;
connData[i].post=&connPostData[i];
connData[i].post->buff=NULL;
connData[i].post->buffLen=0;
connData[i].post->received=0;
connData[i].post->len=-1;
connData[i].startTime = system_get_time();
espconn_regist_recvcb(conn, httpdRecvCb);
espconn_regist_reconcb(conn, httpdReconCb);
espconn_regist_disconcb(conn, httpdDisconCb);
espconn_regist_sentcb(conn, httpdSentCb);
espconn_set_opt(conn, ESPCONN_REUSEADDR|ESPCONN_NODELAY);
}
