diff --git a/Makefile b/Makefile index 96d6549..bf869b8 100644 --- a/Makefile +++ b/Makefile @@ -102,7 +102,7 @@ LED_SERIAL_PIN ?= 14 # --------------- esp-link modules config options --------------- # Optional Modules mqtt -MODULES ?= mqtt rest tcp udp syslog +MODULES ?= mqtt rest socket syslog # --------------- esphttpd config options --------------- @@ -217,12 +217,8 @@ ifneq (,$(findstring rest,$(MODULES))) CFLAGS += -DREST endif -ifneq (,$(findstring tcp,$(MODULES))) - CFLAGS += -DTCP -endif - -ifneq (,$(findstring udp,$(MODULES))) - CFLAGS += -DUDP +ifneq (,$(findstring socket,$(MODULES))) + CFLAGS += -DSOCKET endif ifneq (,$(findstring syslog,$(MODULES))) diff --git a/cmd/cmd.h b/cmd/cmd.h index a1528e8..6580236 100644 --- a/cmd/cmd.h +++ b/cmd/cmd.h @@ -49,11 +49,8 @@ typedef enum { CMD_REST_REQUEST, // do REST request CMD_REST_SETHEADER, // define header - CMD_TCP_SETUP = 30, // set-up callbacks - CMD_TCP_SEND, // send data over TCP socket - - CMD_UDP_SETUP = 40, // set-up callbacks - CMD_UDP_SEND, // send data over UDP socket + CMD_SOCKET_SETUP = 30, // set-up callbacks + CMD_SOCKET_SEND, // send data over UDP socket } CmdName; typedef void (*cmdfunc_t)(CmdPacket *cmd); diff --git a/cmd/handlers.c b/cmd/handlers.c index 51c64f5..9bb21c5 100644 --- a/cmd/handlers.c +++ b/cmd/handlers.c @@ -12,11 +12,8 @@ #ifdef REST #include #endif -#ifdef TCP -#include -#endif -#ifdef UDP -#include +#ifdef SOCKET +#include #endif #ifdef CMD_DBG @@ -53,13 +50,9 @@ const CmdList commands[] = { {CMD_REST_REQUEST, "REST_REQ", REST_Request}, {CMD_REST_SETHEADER, "REST_SETHDR", REST_SetHeader}, #endif -#ifdef TCP - {CMD_TCP_SETUP, "TCP_SETUP", TCP_Setup}, - {CMD_TCP_SEND, "TCP_SEND", TCP_Send}, -#endif -#ifdef UDP - {CMD_UDP_SETUP, "UDP_SETUP", UDP_Setup}, - {CMD_UDP_SEND, "UDP_SEND", UDP_Send}, +#ifdef SOCKET + {CMD_SOCKET_SETUP, "SOCKET_SETUP", SOCKET_Setup}, + {CMD_SOCKET_SEND, "SOCKET_SEND", SOCKET_Send}, #endif }; diff --git a/rest/rest.c b/rest/rest.c index aa40ccb..e9736f5 100644 --- a/rest/rest.c +++ b/rest/rest.c @@ -116,6 +116,7 @@ tcpclient_recv(void *arg, char *pdata, unsigned short len) { espconn_disconnect(client->pCon); } +// Data is sent static void ICACHE_FLASH_ATTR tcpclient_sent_cb(void *arg) { struct espconn *pCon = (struct espconn *)arg; diff --git a/socket/socket.c b/socket/socket.c new file mode 100644 index 0000000..a17f216 --- /dev/null +++ b/socket/socket.c @@ -0,0 +1,432 @@ +// Copyright 2016 by BeeGee, see LICENSE.txt +// +// Adapted from: github.com/tuanpmt/esp_bridge, Created on: Mar 4, 2015, Author: Minh +// Adapted from: rest.c, Author: Thorsten von Eicken + +#include "esp8266.h" +#include "c_types.h" +#include "ip_addr.h" +#include "socket.h" +#include "cmd.h" + +#define SOCK_DBG + +#ifdef SOCK_DBG +#define DBG_SOCK(format, ...) os_printf(format, ## __VA_ARGS__) +#else +#define DBG_SOCK(format, ...) do { } while(0) +#endif + +typedef struct { + char *host; + uint32_t port; + ip_addr_t ip; + struct espconn *pCon; + char *data; + uint16_t data_len; + uint16_t data_sent; + uint32_t resp_cb; + uint8_t conn_num; + uint8_t sock_mode; +} SocketClient; + + +// Connection pool for TCP/UDP socket clients/servers. Attached MCU's just call SOCKET_setup and this allocates +// a connection, They never call any 'free' and given that the attached MCU could restart at +// any time, we cannot really rely on the attached MCU to call 'free' ever, so better do without. +// Instead, we allocate a fixed pool of connections an round-robin. What this means is that the +// attached MCU should really use at most as many SOCKET connections as there are slots in the pool. +#define MAX_SOCKET 4 +static SocketClient socketClient[MAX_SOCKET]; +static uint8_t socketNum = 0xff; // index into socketClient for next slot to allocate + +// Any incoming data? +static void ICACHE_FLASH_ATTR +socketclient_recv_cb(void *arg, char *pusrdata, unsigned short length) { + struct espconn *pCon = (struct espconn *)arg; + SocketClient* client = (SocketClient *)pCon->reverse; + + uint8_t clientNum = client->conn_num; + uint8_t cb_type = USERCB_RECV; + DBG_SOCK("SOCKET #%d: Received %d bytes: %s\n", client-socketClient, length, pusrdata); + cmdResponseStart(CMD_RESP_CB, client->resp_cb, 4); + cmdResponseBody(&cb_type, 1); + cmdResponseBody(&clientNum, 1); + cmdResponseBody(&length, 2); + cmdResponseBody(pusrdata, length); + cmdResponseEnd(); + + if (client->sock_mode != SOCKET_TCP_SERVER) { // We don't wait for a response + DBG_SOCK("SOCKET #%d: disconnect after receiving\n", client-socketClient); + espconn_disconnect(client->pCon); // disconnect from the server + } +} + +// Data is sent +static void ICACHE_FLASH_ATTR +socketclient_sent_cb(void *arg) { + struct espconn *pCon = (struct espconn *)arg; + SocketClient* client = (SocketClient *)pCon->reverse; + + uint8_t clientNum = client->conn_num; + uint8_t cb_type = USERCB_SENT; + DBG_SOCK("SOCKET #%d: Sent\n", client-socketClient); + sint16 sentDataLen = client->data_sent; + if (client->data_sent != client->data_len) + { + // we only sent part of the buffer, send the rest + uint16_t data_left = client->data_len - client->data_sent; + if (data_left > 1400) // we have more than 1400 bytes left + { + data_left = 1400; + espconn_sent(client->pCon, (uint8_t*)(client->data+client->data_sent), 1400 ); + } + espconn_sent(client->pCon, (uint8_t*)(client->data+client->data_sent), data_left ); + client->data_sent += data_left; + } + else + { + // we're done sending, free the memory + if (client->data) os_free(client->data); + client->data = 0; + + if (client->sock_mode == SOCKET_TCP_CLIENT) { // We don't wait for a response + DBG_SOCK("SOCKET #%d: disconnect after sending\n", clientNum); + espconn_disconnect(client->pCon); + } + + cmdResponseStart(CMD_RESP_CB, client->resp_cb, 3); + cmdResponseBody(&cb_type, 1); + cmdResponseBody(&clientNum, 1); + cmdResponseBody(&sentDataLen, 2); + cmdResponseEnd(); + } +} + +// Connection is disconnected +static void ICACHE_FLASH_ATTR +socketclient_discon_cb(void *arg) { + struct espconn *pespconn = (struct espconn *)arg; + SocketClient* client = (SocketClient *)pespconn->reverse; + + uint8_t clientNum = client->conn_num; + uint8_t cb_type = USERCB_CONN; + sint16 _status = CONNSTAT_DIS; + DBG_SOCK("SOCKET #%d: Disconnect\n", clientNum); + // free the data buffer, if we have one + if (client->data) os_free(client->data); + client->data = 0; + cmdResponseStart(CMD_RESP_CB, client->resp_cb, 3); + cmdResponseBody(&cb_type, 1); + cmdResponseBody(&clientNum, 1); + cmdResponseBody(&_status, 2); + cmdResponseEnd(); +} + +// Connection was reset +static void ICACHE_FLASH_ATTR +socketclient_recon_cb(void *arg, sint8 errType) { + struct espconn *pCon = (struct espconn *)arg; + SocketClient* client = (SocketClient *)pCon->reverse; + + uint8_t clientNum = client->conn_num; + uint8_t cb_type = USERCB_RECO; + sint16 _errType = errType; + os_printf("SOCKET #%d: conn reset, err=%d\n", clientNum, _errType); + cmdResponseStart(CMD_RESP_CB, client->resp_cb, 3); + cmdResponseBody(&cb_type, 1); + cmdResponseBody(&clientNum, 1); + cmdResponseBody(&_errType, 2); + cmdResponseEnd(); + // free the data buffer, if we have one + if (client->data) os_free(client->data); + client->data = 0; +} + +// Connection is done +static void ICACHE_FLASH_ATTR +socketclient_connect_cb(void *arg) { + struct espconn *pCon = (struct espconn *)arg; + SocketClient* client = (SocketClient *)pCon->reverse; + + uint8_t clientNum = client->conn_num; + uint8_t cb_type = USERCB_CONN; + sint16 _status = CONNSTAT_CON; + DBG_SOCK("SOCKET #%d: connected socket mode = %d\n", clientNum, client->sock_mode); + espconn_regist_disconcb(client->pCon, socketclient_discon_cb); + espconn_regist_recvcb(client->pCon, socketclient_recv_cb); + espconn_regist_sentcb(client->pCon, socketclient_sent_cb); + + DBG_SOCK("SOCKET #%d: sending %d\n", clientNum, client->data_sent); + if (client->sock_mode != SOCKET_TCP_SERVER) { // Send data after established connection only in client mode + client->data_sent = client->data_len <= 1400 ? client->data_len : 1400; + DBG_SOCK("SOCKET #%d: sending %d\n", clientNum, client->data_sent); + espconn_send(client->pCon, (uint8_t*)client->data, client->data_sent); + } + + cmdResponseStart(CMD_RESP_CB, client->resp_cb, 3); + cmdResponseBody(&cb_type, 1); + cmdResponseBody(&clientNum, 1); + cmdResponseBody(&_status, 2); + cmdResponseEnd(); +} + +static void ICACHE_FLASH_ATTR +socket_dns_found(const char *name, ip_addr_t *ipaddr, void *arg) { + struct espconn *pConn = (struct espconn *)arg; + SocketClient* client = (SocketClient *)pConn->reverse; + uint8_t clientNum = client->conn_num; + + if(ipaddr == NULL) { + sint16 _errType = ESPCONN_RTE; //-4; + uint8_t cb_type = USERCB_RECO; // use Routing problem or define a new one + os_printf("SOCKET #%d DNS: Got no ip, report error\n", clientNum); + cmdResponseStart(CMD_RESP_CB, client->resp_cb, 3); + cmdResponseBody(&cb_type, 2); // Same as connection reset?? or define a new one + cmdResponseBody(&clientNum, 1); + cmdResponseBody(&_errType, 2); + cmdResponseEnd(); + return; + } + DBG_SOCK("SOCKET #%d DNS: found ip %d.%d.%d.%d\n", + clientNum, + *((uint8 *) &ipaddr->addr), + *((uint8 *) &ipaddr->addr + 1), + *((uint8 *) &ipaddr->addr + 2), + *((uint8 *) &ipaddr->addr + 3)); + if(client->ip.addr == 0 && ipaddr->addr != 0) { + os_memcpy(client->pCon->proto.tcp->remote_ip, &ipaddr->addr, 4); + espconn_connect(client->pCon); + DBG_SOCK("SOCKET #%d: connecting...\n", clientNum); + } +} + +void ICACHE_FLASH_ATTR +SOCKET_Setup(CmdPacket *cmd) { + CmdRequest req; + uint16_t port; + uint8_t sock_mode; + int32_t err = -1; // error code in case of failure + + // start parsing the command + cmdRequest(&req, cmd); + if(cmdGetArgc(&req) != 3) { + DBG_SOCK("SOCKET Setup parse command failure: (cmdGetArgc(&req) != 3)\n"); + goto fail; + } + err--; + + // get the hostname (IP address) + uint16_t len = cmdArgLen(&req); + if (len > 128) { + DBG_SOCK("SOCKET Setup parse command failure: hostname longer than 128 characters\n"); + goto fail; // safety check + } + err--; + uint8_t *socket_host = (uint8_t*)os_zalloc(len + 1); + if (socket_host == NULL) { + DBG_SOCK("SOCKET Setup failed to alloc memory for socket_host\n"); + goto fail; + } + if (cmdPopArg(&req, socket_host, len)) { + DBG_SOCK("SOCKET Setup parse command failure: (cmdPopArg(&req, socket_host, len))\n"); + goto fail; + } + err--; + socket_host[len] = 0; + + // get the port + if (cmdPopArg(&req, (uint8_t*)&port, 2)) { + DBG_SOCK("SOCKET Setup parse command failure: cannot get port\n"); + os_free(socket_host); + goto fail; + } + err--; + + // get the socket mode + if (cmdPopArg(&req, (uint8_t*)&sock_mode, 1)) { + DBG_SOCK("SOCKET Setup parse command failure: cannot get mode\n"); + os_free(socket_host); + goto fail; + } + err--; + DBG_SOCK("SOCKET Setup listener flag\n"); + + // clear connection structures the first time + if (socketNum == 0xff) { + os_memset(socketClient, 0, MAX_SOCKET * sizeof(SocketClient)); + socketNum = 0; + } + + // allocate a connection structure + SocketClient *client = socketClient + socketNum; + uint8_t clientNum = socketNum; + socketNum = (socketNum+1)%MAX_SOCKET; + + // free any data structure that may be left from a previous connection + if (client->data) os_free(client->data); + if (client->pCon) { + if (sock_mode != SOCKET_UDP) { + if (client->pCon->proto.tcp) os_free(client->pCon->proto.tcp); + } else { + if (client->pCon->proto.udp) os_free(client->pCon->proto.udp); + } + os_free(client->pCon); + } + os_memset(client, 0, sizeof(SocketClient)); + DBG_SOCK("SOCKET #%d: Setup host=%s port=%d \n", clientNum, socket_host, port); + + client->sock_mode = sock_mode; + client->resp_cb = cmd->value; + client->conn_num = clientNum; + + client->host = (char *)socket_host; + client->port = port; + + if (sock_mode == SOCKET_UDP) { + wifi_set_broadcast_if(STATIONAP_MODE); + } + + client->pCon = (struct espconn *)os_zalloc(sizeof(struct espconn)); + if (client->pCon == NULL) { + DBG_SOCK("SOCKET #%d: Setup failed to alloc memory for client_pCon\n", clientNum); + goto fail; + } + + if (sock_mode != SOCKET_UDP) { + client->pCon->type = ESPCONN_TCP; + client->pCon->proto.tcp = (esp_tcp *)os_zalloc(sizeof(esp_tcp)); + if (client->pCon->proto.tcp == NULL) { + DBG_SOCK("SOCKET #%d: Setup failed to alloc memory for client->pCon->proto.tcp\n", clientNum); + goto fail; + } + } else { + client->pCon->type = ESPCONN_UDP; + client->pCon->proto.udp = (esp_udp *)os_zalloc(sizeof(esp_udp)); + if (client->pCon->proto.udp == NULL) { + DBG_SOCK("SOCKET #%d: Setup failed to alloc memory for client->pCon->proto.udp\n", clientNum); + goto fail; + } + } + client->pCon->state = ESPCONN_NONE; + + os_memcpy(client->host, socket_host, 4); + if (sock_mode != SOCKET_UDP) { + client->pCon->proto.tcp->remote_port = client->port; + client->pCon->proto.tcp->local_port = client->port; // espconn_port(); + } else { + client->pCon->proto.udp->remote_port = client->port; + client->pCon->proto.udp->local_port = client->port; + } + + client->pCon->reverse = client; + + espconn_regist_sentcb(client->pCon, socketclient_sent_cb); + espconn_regist_recvcb(client->pCon, socketclient_recv_cb); + if (sock_mode == SOCKET_UDP) { + DBG_SOCK("SOCKET #%d: Create connection to ip %s:%d\n", clientNum, client->host, client->port); + + if(UTILS_StrToIP((char *)client->host, &client->pCon->proto.udp->remote_ip)) { + espconn_create(client->pCon); + } else { + DBG_SOCK("SOCKET #%d: failed to copy remote_ip to &client->pCon->proto.udp->remote_ip\n", clientNum); + goto fail; + } + } else { + espconn_regist_reconcb(client->pCon, socketclient_recon_cb); + if (client->sock_mode == SOCKET_TCP_SERVER) { // Server mode? + DBG_SOCK("SOCKET #%d: Enable server mode on port%d\n", clientNum, client->port); + espconn_accept(client->pCon); + espconn_regist_connectcb(client->pCon, socketclient_connect_cb); + } + } + + cmdResponseStart(CMD_RESP_V, clientNum, 0); + cmdResponseEnd(); + DBG_SOCK("SOCKET #%d: setup finished\n", clientNum); + return; + +fail: + cmdResponseStart(CMD_RESP_V, err, 0); + cmdResponseEnd(); + return; +} + +void ICACHE_FLASH_ATTR +SOCKET_Send(CmdPacket *cmd) { + CmdRequest req; + cmdRequest(&req, cmd); + + // Get client + uint32_t clientNum = cmd->value; + SocketClient *client = socketClient + (clientNum % MAX_SOCKET); + DBG_SOCK("SOCKET #%d: send", clientNum); + + if (cmd->argc != 1 && cmd->argc != 2) { + DBG_SOCK("\nSOCKET #%d: send - wrong number of arguments\n", clientNum); + return; + } + + // Get data to sent + client->data_len = cmdArgLen(&req); + DBG_SOCK(" dataLen=%d", client->data_len); + + if (client->data) os_free(client->data); + client->data = (char*)os_zalloc(client->data_len); + if (client->data == NULL) { + DBG_SOCK("\nSOCKET #%d failed to alloc memory for client->data\n", clientNum); + goto fail; + } + cmdPopArg(&req, client->data, client->data_len); + DBG_SOCK(" socketData=%s", client->data); + + // client->data_len = os_sprintf((char*)client->data, socketDataSet, socketData); + + DBG_SOCK("\n"); + + DBG_SOCK("SOCKET #%d: Create connection to ip %s:%d\n", clientNum, client->host, client->port); + + if (client->sock_mode == SOCKET_TCP_SERVER) { // In TCP server mode we should be connected already and send the data immediately + remot_info *premot = NULL; + if (espconn_get_connection_info(client->pCon,&premot,0) == ESPCONN_OK){ + for (uint8 count = 0; count < client->pCon->link_cnt; count ++){ + client->pCon->proto.tcp->remote_port = premot[count].remote_port; + + client->pCon->proto.tcp->remote_ip[0] = premot[count].remote_ip[0]; + client->pCon->proto.tcp->remote_ip[1] = premot[count].remote_ip[1]; + client->pCon->proto.tcp->remote_ip[2] = premot[count].remote_ip[2]; + client->pCon->proto.tcp->remote_ip[3] = premot[count].remote_ip[3]; + DBG_SOCK("SOCKET #%d: connected to %d.%d.%d.%d:%d\n", + clientNum, + client->pCon->proto.tcp->remote_ip[0], + client->pCon->proto.tcp->remote_ip[1], + client->pCon->proto.tcp->remote_ip[2], + client->pCon->proto.tcp->remote_ip[3], + client->pCon->proto.tcp->remote_port + ); + } + client->data_sent = client->data_len <= 1400 ? client->data_len : 1400; + DBG_SOCK("SOCKET #%d: Server sending %d\n", clientNum, client->data_sent); + espconn_send(client->pCon, (uint8_t*)client->data, client->data_sent); + } + } else if (client->sock_mode != SOCKET_UDP) { // In TCP client mode we connect and send the data from the connected callback + espconn_regist_connectcb(client->pCon, socketclient_connect_cb); + + if(UTILS_StrToIP((char *)client->host, &client->pCon->proto.tcp->remote_ip)) { + DBG_SOCK("SOCKET #%d: Connect to ip %s:%d\n", clientNum, client->host, client->port); + espconn_connect(client->pCon); + } else { + DBG_SOCK("SOCKET #%d: Connect to host %s:%d\n", clientNum, client->host, client->port); + espconn_gethostbyname(client->pCon, (char *)client->host, &client->ip, socket_dns_found); + } + } else { // in UDP socket mode we send the data immediately + client->data_sent = client->data_len <= 1400 ? client->data_len : 1400; + DBG_SOCK("SOCKET #%d: sending %d bytes: %s\n", clientNum, client->data_sent, client->data); + espconn_sent(client->pCon, (uint8_t*)client->data, client->data_sent); + } + + return; + +fail: + DBG_SOCK("\n"); +} diff --git a/socket/socket.h b/socket/socket.h new file mode 100644 index 0000000..258109b --- /dev/null +++ b/socket/socket.h @@ -0,0 +1,38 @@ +/* + * socket.h + * + * Created on: Sep 16th 2016 + * Author: BeeGee + */ + +#ifndef MODULES_SOCKET_H_ +#define MODULES_SOCKET_H_ + +#include "cmd.h" + +void SOCKET_Setup(CmdPacket *cmd); +void SOCKET_Send(CmdPacket *cmd); + +// Socket mode +typedef enum { + SOCKET_TCP_CLIENT = 0, /**< TCP socket client for sending only, doesn't wait for response from server */ + SOCKET_TCP_CLIENT_LISTEN, /**< TCP socket client, waits for response from server after sending */ + SOCKET_TCP_SERVER, /**< TCP socket server */ + SOCKET_UDP, /**< UDP socket for sending and receiving UDP packets */ +} socketMode; + +// Callback type +typedef enum { + USERCB_SENT = 0, /**< Data send finished */ + USERCB_RECV, /**< Data received */ + USERCB_RECO, /**< Connection error */ + USERCB_CONN, /**< Connection event */ +} cbType; + +// Connection status +typedef enum { + CONNSTAT_DIS = 0, // Disconnected + CONNSTAT_CON, // Connected +} connStat; + +#endif /* MODULES_SOCKET_H_ */ diff --git a/udp/udp.c b/udp/udp.c index 642cb3e..0359ec3 100644 --- a/udp/udp.c +++ b/udp/udp.c @@ -143,7 +143,7 @@ UDP_Setup(CmdPacket *cmd) { os_free(client->pCon); } os_memset(client, 0, sizeof(UdpClient)); - DBG_UDP("UDP #%d: Setup #%d udp_host=%s port=%d \n", clientNum, udp_host, port); + DBG_UDP("UDP #%d: Setup udp_host=%s port=%d \n", clientNum, udp_host, port); client->resp_cb = cmd->value; client->conn_num = clientNum;