Ivo Noorhoff
Fork for fixes
Diff: TcpClient.cpp
- Revision:
- 9:a156d3de5647
- Child:
- 10:e4ddab81e6a8
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/TcpClient.cpp Tue Aug 27 15:01:10 2019 +0000
@@ -0,0 +1,702 @@
+/*
+ UIPClient.cpp - Arduino implementation of a UIP wrapper class.
+ Copyright (c) 2013 Norbert Truchsess <norbert.truchsess@t-online.de>
+ All rights reserved.
+
+ Modified (ported to mbed) by Zoltan Hudak <hudakz@inbox.com>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+extern "C"
+{
+#include "utility/uip-conf.h"
+#include "utility/uip.h"
+#include "utility/uip_arp.h"
+#include "string.h"
+}
+#include "UipEthernet.h"
+#include "TcpClient.h"
+#include "DnsClient.h"
+
+#define UIP_TCP_PHYH_LEN UIP_LLH_LEN + UIP_IPTCPH_LEN
+
+uip_userdata_t TcpClient::all_data[UIP_CONNS];
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+TcpClient::TcpClient() :
+ data(NULL)
+{ }
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+TcpClient::TcpClient(uip_userdata_t* conn_data) :
+ data(conn_data)
+{ }
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+int TcpClient::connect(IpAddress ip, uint16_t port)
+{
+ stop();
+
+ uip_ipaddr_t ipaddr;
+ uip_ip_addr(ipaddr, ip);
+
+ struct uip_conn* conn = uip_connect(&ipaddr, htons(port));
+ if (conn)
+ {
+#if UIP_CONNECT_TIMEOUT > 0
+ int32_t timeout = time(NULL) + UIP_CONNECT_TIMEOUT;
+#endif
+ while ((conn->tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
+ UipEthernet::ethernet->tick();
+ if ((conn->tcpstateflags & UIP_TS_MASK) == UIP_ESTABLISHED) {
+ data = (uip_userdata_t*)conn->appstate;
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("connected, state: %d, first packet in: %d\r\n", data->state, data->packets_in[0]);
+#endif
+ return 1;
+ }
+
+#if UIP_CONNECT_TIMEOUT > 0
+ if (((int32_t) (time(NULL) - timeout)) > 0) {
+ conn->tcpstateflags = UIP_CLOSED;
+ break;
+ }
+#endif
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+int TcpClient::connect(const char* host, uint16_t port)
+{
+ // Look up the host first
+ int ret = 0;
+#if UIP_UDP
+ DnsClient dns;
+ IpAddress remote_addr;
+
+ dns.begin(UipEthernet::dnsServerAddress);
+ ret = dns.getHostByName(host, remote_addr);
+ if (ret == 1) {
+ return connect(remote_addr, port);
+ }
+#endif
+ return ret;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void TcpClient::stop()
+{
+ if (data && data->state)
+ {
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("before stop(), with data\r\n");
+ _dumpAllData();
+#endif
+ _flushBlocks(&data->packets_in[0]);
+ if (data->state & UIP_CLIENT_REMOTECLOSED) {
+ data->state = 0;
+ }
+ else {
+ data->state |= UIP_CLIENT_CLOSE;
+ }
+
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("after stop()\r\n");
+ _dumpAllData();
+#endif
+ }
+
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ else {
+ printf("stop(), data: NULL\r\n");
+ }
+#endif
+ data = NULL;
+ UipEthernet::ethernet->tick();
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+uint8_t TcpClient::connected()
+{
+ return(data && (data->packets_in[0] != NOBLOCK || (data->state & UIP_CLIENT_CONNECTED))) ? 1 : 0;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool TcpClient::operator==(const TcpClient& rhs)
+{
+ return data && rhs.data && (data == rhs.data);
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+TcpClient::operator bool()
+{
+ UipEthernet::ethernet->tick();
+ return data && (!(data->state & UIP_CLIENT_REMOTECLOSED) || data->packets_in[0] != NOBLOCK);
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+size_t TcpClient::write(uint8_t c)
+{
+ return _write(data, &c, 1);
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+size_t TcpClient::write(const uint8_t* buf, size_t size)
+{
+ return _write(data, buf, size);
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+size_t TcpClient::_write(uip_userdata_t* data, const uint8_t* buf, size_t size)
+{
+ int remain = size;
+ uint16_t written;
+#if UIP_ATTEMPTS_ON_WRITE > 0
+ uint16_t attempts = UIP_ATTEMPTS_ON_WRITE;
+#endif
+ repeat : UipEthernet::ethernet->tick();
+ if (data && !(data->state & (UIP_CLIENT_CLOSE | UIP_CLIENT_REMOTECLOSED))) {
+ uint8_t p = _currentBlock(&data->packets_out[0]);
+ if (data->packets_out[p] == NOBLOCK)
+ {
+newpacket:
+ data->packets_out[p] = UipEthernet::ethernet->phy.allocBlock(UIP_SOCKET_DATALEN);
+ if (data->packets_out[p] == NOBLOCK)
+ {
+#if UIP_ATTEMPTS_ON_WRITE > 0
+ if (--attempts > 0)
+#endif
+#if UIP_ATTEMPTS_ON_WRITE != 0
+ goto repeat;
+#endif
+ goto ready;
+ }
+
+ data->out_pos = 0;
+ }
+
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf
+ (
+ "UIPClient.write: writePacket(%d) pos: %d, buf[%d-%d]\r\n",
+ u->packets_out[p],
+ u->out_pos,
+ size - remain,
+ remain
+ );
+#endif
+ written = UipEthernet::ethernet->phy.writePacket
+ (
+ data->packets_out[p],
+ data->out_pos,
+ (uint8_t*)buf + size - remain,
+ remain
+ );
+ remain -= written;
+ data->out_pos += written;
+ if (remain > 0) {
+ if (p == UIP_SOCKET_NUMPACKETS - 1)
+ {
+#if UIP_ATTEMPTS_ON_WRITE > 0
+ if (--attempts > 0)
+#endif
+#if UIP_ATTEMPTS_ON_WRITE != 0
+ goto repeat;
+#endif
+ goto ready;
+ }
+
+ p++;
+ goto newpacket;
+ }
+
+ready:
+ data->pollTimer.start();
+ return size - remain;
+ }
+
+ return -1;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+int TcpClient::available()
+{
+ if (*this)
+ return _available(data);
+ return 0;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+int TcpClient::_available(uip_userdata_t* u)
+{
+ int len = 0;
+ for (uint8_t i = 0; i < UIP_SOCKET_NUMPACKETS; i++) {
+ len += UipEthernet::ethernet->phy.blockSize(u->packets_in[i]);
+ }
+
+ return len;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+int TcpClient::read(uint8_t* buf, size_t size)
+{
+ if (*this) {
+ uint16_t remain = size;
+ if (data->packets_in[0] == NOBLOCK)
+ return 0;
+
+ uint16_t read;
+ do {
+ read = UipEthernet::ethernet->phy.readPacket(data->packets_in[0], 0, buf + size - remain, remain);
+ if (read == UipEthernet::ethernet->phy.blockSize(data->packets_in[0])) {
+ remain -= read;
+ _eatBlock(&data->packets_in[0]);
+ if
+ (
+ uip_stopped(&uip_conns[data->state & UIP_CLIENT_SOCKETS]) &&
+ !(data->state & (UIP_CLIENT_CLOSE | UIP_CLIENT_REMOTECLOSED))
+ ) data->state |= UIP_CLIENT_RESTART;
+ if (data->packets_in[0] == NOBLOCK) {
+ if (data->state & UIP_CLIENT_REMOTECLOSED) {
+ data->state = 0;
+ data = NULL;
+ }
+
+ return size - remain;
+ }
+ }
+ else {
+ UipEthernet::ethernet->phy.resizeBlock(data->packets_in[0], read);
+ break;
+ }
+ } while (remain > 0);
+ return size;
+ }
+
+ return -1;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+int TcpClient::read()
+{
+ static uint8_t c;
+ if (read(&c, 1) < 0)
+ return -1;
+ return c;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+int TcpClient::peek()
+{
+ static uint8_t c;
+ if (*this) {
+ if (data->packets_in[0] != NOBLOCK) {
+ UipEthernet::ethernet->phy.readPacket(data->packets_in[0], 0, &c, 1);
+ return c;
+ }
+ }
+
+ return -1;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void TcpClient::flush()
+{
+ if (*this) {
+ _flushBlocks(&data->packets_in[0]);
+ }
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void TcpClient::close()
+{
+ delete this;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void uipclient_appcall()
+{
+ uint16_t send_len = 0;
+ uip_userdata_t* u = (uip_userdata_t*)uip_conn->appstate;
+ if (!u && uip_connected())
+ {
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("UIPClient uip_connected\r\n");
+ UIPClient::_dumpAllData();
+#endif
+ u = (uip_userdata_t*)TcpClient::_allocateData();
+ if (u) {
+ uip_conn->appstate = u;
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("UIPClient allocated state: %d", u->state);
+#endif
+ }
+
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ else
+ printf("UIPClient allocation failed\r\n");
+#endif
+ }
+
+ if (u) {
+ if (uip_newdata())
+ {
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("UIPClient uip_newdata, uip_len: %d\r\n", uip_len);
+#endif
+ if (uip_len && !(u->state & (UIP_CLIENT_CLOSE | UIP_CLIENT_REMOTECLOSED))) {
+ for (uint8_t i = 0; i < UIP_SOCKET_NUMPACKETS; i++) {
+ if (u->packets_in[i] == NOBLOCK) {
+ u->packets_in[i] = UipEthernet::ethernet->phy.allocBlock(uip_len);
+ if (u->packets_in[i] != NOBLOCK) {
+ UipEthernet::ethernet->phy.copyPacket
+ (
+ u->packets_in[i],
+ 0,
+ UipEthernet::inPacket,
+ ((uint8_t*)uip_appdata) - uip_buf,
+ uip_len
+ );
+ if (i == UIP_SOCKET_NUMPACKETS - 1)
+ uip_stop();
+ goto finish_newdata;
+ }
+ }
+ }
+
+ UipEthernet::packetState &= ~UIPETHERNET_FREEPACKET;
+ uip_stop();
+ }
+ }
+
+finish_newdata:
+ if (u->state & UIP_CLIENT_RESTART) {
+ u->state &= ~UIP_CLIENT_RESTART;
+ uip_restart();
+ }
+
+ // If the connection has been closed, save received but unread data.
+ if (uip_closed() || uip_timedout())
+ {
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("UIPClient uip_closed\r\n");
+ UIPClient::_dumpAllData();
+#endif
+ // drop outgoing packets not sent yet:
+
+ TcpClient::_flushBlocks(&u->packets_out[0]);
+ if (u->packets_in[0] != NOBLOCK) {
+ ((uip_userdata_closed_t*)u)->lport = uip_conn->lport;
+ u->state |= UIP_CLIENT_REMOTECLOSED;
+ }
+ else
+ u->state = 0;
+
+ // disassociate appdata.
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("after UIPClient uip_closed\r\n");
+ UIPClient::_dumpAllData();
+#endif
+ uip_conn->appstate = NULL;
+ goto finish;
+ }
+
+ if (uip_acked())
+ {
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("UIPClient uip_acked\r\n");
+#endif
+ TcpClient::_eatBlock(&u->packets_out[0]);
+ }
+
+ if (uip_poll() || uip_rexmit())
+ {
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ //printf("UIPClient uip_poll\r\n");
+#endif
+ if (u->packets_out[0] != NOBLOCK) {
+ if (u->packets_out[1] == NOBLOCK) {
+ send_len = u->out_pos;
+ if (send_len > 0) {
+ UipEthernet::ethernet->phy.resizeBlock(u->packets_out[0], 0, send_len);
+ }
+ }
+ else
+ send_len = UipEthernet::ethernet->phy.blockSize(u->packets_out[0]);
+ if (send_len > 0) {
+ UipEthernet::uipHeaderLen = ((uint8_t*)uip_appdata) - uip_buf;
+ UipEthernet::uipPacket = UipEthernet::ethernet->phy.allocBlock(UipEthernet::uipHeaderLen + send_len);
+ if (UipEthernet::uipPacket != NOBLOCK) {
+ UipEthernet::ethernet->phy.copyPacket
+ (
+ UipEthernet::uipPacket,
+ UipEthernet::uipHeaderLen,
+ u->packets_out[0],
+ 0,
+ send_len
+ );
+ UipEthernet::packetState |= UIPETHERNET_SENDPACKET;
+ }
+ }
+
+ goto finish;
+ }
+ }
+
+ // don't close connection unless all outgoing packets are sent
+ if (u->state & UIP_CLIENT_CLOSE)
+ {
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("UIPClient state UIP_CLIENT_CLOSE\r\n");
+ UIPClient::_dumpAllData();
+#endif
+ if (u->packets_out[0] == NOBLOCK) {
+ u->state = 0;
+ uip_conn->appstate = NULL;
+ uip_close();
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("no blocks out -> free userdata\r\n");
+ UIPClient::_dumpAllData();
+#endif
+ }
+ else {
+ uip_stop();
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ printf("blocks outstanding transfer -> uip_stop()\r\n");
+#endif
+ }
+ }
+ }
+
+finish:
+ uip_send(uip_appdata, send_len);
+ uip_len = send_len;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+uip_userdata_t* TcpClient::_allocateData()
+{
+ for (uint8_t sock = 0; sock < UIP_CONNS; sock++) {
+ uip_userdata_t* data = &TcpClient::all_data[sock];
+ if (!data->state) {
+ data->pollTimer.reset();
+ data->state = sock | UIP_CLIENT_CONNECTED;
+ memset(data->packets_in, 0, sizeof(data->packets_in) / sizeof(data->packets_in[0]));
+ memset(&data->packets_out, 0, sizeof(data->packets_out) / sizeof(data->packets_out[0]));
+ data->out_pos = 0;
+ return data;
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+uint8_t TcpClient::_currentBlock(memhandle* block)
+{
+ for (uint8_t i = 1; i < UIP_SOCKET_NUMPACKETS; i++) {
+ if (block[i] == NOBLOCK)
+ return i - 1;
+ }
+
+ return UIP_SOCKET_NUMPACKETS - 1;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void TcpClient::_eatBlock(memhandle* block)
+{
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ memhandle* start = block;
+ printf("eatblock(%d): ", *block);
+ for (uint8_t i = 0; i < UIP_SOCKET_NUMPACKETS; i++) {
+ printf("%d ", start[i]);
+ }
+
+ printf("-> ");
+#endif
+ UipEthernet::ethernet->phy.freeBlock(block[0]);
+ for (uint8_t i = 0; i < UIP_SOCKET_NUMPACKETS - 1; i++) {
+ block[i] = block[i + 1];
+ }
+
+ block[UIP_SOCKET_NUMPACKETS - 1] = NOBLOCK;
+#ifdef UIPETHERNET_DEBUG_CLIENT
+ for (uint8_t i = 0; i < UIP_SOCKET_NUMPACKETS; i++) {
+ printf("%d ", start[i]);
+ }
+
+ printf("\r\n");
+#endif
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void TcpClient::_flushBlocks(memhandle* block)
+{
+ for (uint8_t i = 0; i < UIP_SOCKET_NUMPACKETS; i++) {
+ UipEthernet::ethernet->phy.freeBlock(block[i]);
+ block[i] = NOBLOCK;
+ }
+}
+
+#ifdef UIPETHERNET_DEBUG_CLIENT
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void UIPClient::_dumpAllData()
+{
+ for (uint8_t i = 0; i < UIP_CONNS; i++) {
+ printf("UIPClient::all_data[%d], state:%d packets_in: ", i, all_data[i].state);
+ for (uint8_t j = 0; j < UIP_SOCKET_NUMPACKETS; j++) {
+ printf("%d ", all_data[i].packets_in[j]);
+ }
+
+ printf("\r\n");
+ if (all_data[i].state & UIP_CLIENT_REMOTECLOSED) {
+ printf("state remote closed, local port: %d", htons(((uip_userdata_closed_t *) (&all_data[i]))->lport));
+ printf("\r\n");
+ }
+ else {
+ printf("packets_out: ");
+ for (uint8_t j = 0; j < UIP_SOCKET_NUMPACKETS; j++) {
+ printf("%d ", all_data[i].packets_out[j]);
+ }
+
+ printf("\r\n");
+ printf("out_pos: %d\r\n", all_data[i].out_pos);
+ }
+ }
+}
+#endif