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authorCristian Maglie <c.maglie@bug.st>2012-01-04 15:14:51 +0100
committerCristian Maglie <c.maglie@bug.st>2012-01-04 15:14:51 +0100
commit8c2b5b979a75d109ae7cc306afc50d7ffe1e0366 (patch)
tree19ac8d91c7209397e7dc890b432a254ae9a7cd62 /libraries/Ethernet/EthernetClient.cpp
parentbe52c95820400d48e47615232d3c38236166fad3 (diff)
Moved libraries folder inside platform folder. Now libraries and examples are searched per board/platform
Diffstat (limited to 'libraries/Ethernet/EthernetClient.cpp')
-rw-r--r--libraries/Ethernet/EthernetClient.cpp165
1 files changed, 165 insertions, 0 deletions
diff --git a/libraries/Ethernet/EthernetClient.cpp b/libraries/Ethernet/EthernetClient.cpp
new file mode 100644
index 0000000..a77a62b
--- /dev/null
+++ b/libraries/Ethernet/EthernetClient.cpp
@@ -0,0 +1,165 @@
+#include "w5100.h"
+#include "socket.h"
+
+extern "C" {
+ #include "string.h"
+}
+
+#include "Arduino.h"
+
+#include "Ethernet.h"
+#include "EthernetClient.h"
+#include "EthernetServer.h"
+#include "Dns.h"
+
+uint16_t EthernetClient::_srcport = 1024;
+
+EthernetClient::EthernetClient() : _sock(MAX_SOCK_NUM) {
+}
+
+EthernetClient::EthernetClient(uint8_t sock) : _sock(sock) {
+}
+
+int EthernetClient::connect(const char* host, uint16_t port) {
+ // Look up the host first
+ int ret = 0;
+ DNSClient dns;
+ IPAddress remote_addr;
+
+ dns.begin(Ethernet.dnsServerIP());
+ ret = dns.getHostByName(host, remote_addr);
+ if (ret == 1) {
+ return connect(remote_addr, port);
+ } else {
+ return ret;
+ }
+}
+
+int EthernetClient::connect(IPAddress ip, uint16_t port) {
+ if (_sock != MAX_SOCK_NUM)
+ return 0;
+
+ for (int i = 0; i < MAX_SOCK_NUM; i++) {
+ uint8_t s = W5100.readSnSR(i);
+ if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT) {
+ _sock = i;
+ break;
+ }
+ }
+
+ if (_sock == MAX_SOCK_NUM)
+ return 0;
+
+ _srcport++;
+ if (_srcport == 0) _srcport = 1024;
+ socket(_sock, SnMR::TCP, _srcport, 0);
+
+ if (!::connect(_sock, rawIPAddress(ip), port)) {
+ _sock = MAX_SOCK_NUM;
+ return 0;
+ }
+
+ while (status() != SnSR::ESTABLISHED) {
+ delay(1);
+ if (status() == SnSR::CLOSED) {
+ _sock = MAX_SOCK_NUM;
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+size_t EthernetClient::write(uint8_t b) {
+ return write(&b, 1);
+}
+
+size_t EthernetClient::write(const uint8_t *buf, size_t size) {
+ if (_sock == MAX_SOCK_NUM) {
+ setWriteError();
+ return 0;
+ }
+ if (!send(_sock, buf, size)) {
+ setWriteError();
+ return 0;
+ }
+ return size;
+}
+
+int EthernetClient::available() {
+ if (_sock != MAX_SOCK_NUM)
+ return W5100.getRXReceivedSize(_sock);
+ return 0;
+}
+
+int EthernetClient::read() {
+ uint8_t b;
+ if ( recv(_sock, &b, 1) > 0 )
+ {
+ // recv worked
+ return b;
+ }
+ else
+ {
+ // No data available
+ return -1;
+ }
+}
+
+int EthernetClient::read(uint8_t *buf, size_t size) {
+ return recv(_sock, buf, size);
+}
+
+int EthernetClient::peek() {
+ uint8_t b;
+ // Unlike recv, peek doesn't check to see if there's any data available, so we must
+ if (!available())
+ return -1;
+ ::peek(_sock, &b);
+ return b;
+}
+
+void EthernetClient::flush() {
+ while (available())
+ read();
+}
+
+void EthernetClient::stop() {
+ if (_sock == MAX_SOCK_NUM)
+ return;
+
+ // attempt to close the connection gracefully (send a FIN to other side)
+ disconnect(_sock);
+ unsigned long start = millis();
+
+ // wait a second for the connection to close
+ while (status() != SnSR::CLOSED && millis() - start < 1000)
+ delay(1);
+
+ // if it hasn't closed, close it forcefully
+ if (status() != SnSR::CLOSED)
+ close(_sock);
+
+ EthernetClass::_server_port[_sock] = 0;
+ _sock = MAX_SOCK_NUM;
+}
+
+uint8_t EthernetClient::connected() {
+ if (_sock == MAX_SOCK_NUM) return 0;
+
+ uint8_t s = status();
+ return !(s == SnSR::LISTEN || s == SnSR::CLOSED || s == SnSR::FIN_WAIT ||
+ (s == SnSR::CLOSE_WAIT && !available()));
+}
+
+uint8_t EthernetClient::status() {
+ if (_sock == MAX_SOCK_NUM) return SnSR::CLOSED;
+ return W5100.readSnSR(_sock);
+}
+
+// the next function allows us to use the client returned by
+// EthernetServer::available() as the condition in an if-statement.
+
+EthernetClient::operator bool() {
+ return _sock != MAX_SOCK_NUM;
+}