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Dependencies:   mbed

lwip/Core/TCPConnection.h@0:4570f87afab6, 2011-09-03 (annotated)

Committer:
geiineuville
Date:
Sat Sep 03 09:42:32 2011 +0000
Revision:
0:4570f87afab6
v1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
geiineuville 0:4570f87afab6 1 #ifndef TCPCONNECTION_H
geiineuville 0:4570f87afab6 2 #define TCPCONNECTION_H
geiineuville 0:4570f87afab6 3
geiineuville 0:4570f87afab6 4 #include "arch/cc.h"
geiineuville 0:4570f87afab6 5 #include "lwip/err.h"
geiineuville 0:4570f87afab6 6 //#include "lwip/tcp.h"
geiineuville 0:4570f87afab6 7
geiineuville 0:4570f87afab6 8 #include "TCPItem.h"
geiineuville 0:4570f87afab6 9
geiineuville 0:4570f87afab6 10 namespace mbed {
geiineuville 0:4570f87afab6 11
geiineuville 0:4570f87afab6 12 class NetServer;
geiineuville 0:4570f87afab6 13 class TCPListener;
geiineuville 0:4570f87afab6 14
geiineuville 0:4570f87afab6 15 class TCPConnection : public TCPItem {
geiineuville 0:4570f87afab6 16 public:
geiineuville 0:4570f87afab6 17 TCPConnection(struct ip_addr, u16_t);
geiineuville 0:4570f87afab6 18 TCPConnection(TCPListener *, struct tcp_pcb *);
geiineuville 0:4570f87afab6 19
geiineuville 0:4570f87afab6 20 virtual ~TCPConnection();
geiineuville 0:4570f87afab6 21
geiineuville 0:4570f87afab6 22 void connect();
geiineuville 0:4570f87afab6 23
geiineuville 0:4570f87afab6 24 err_t write(void *, u16_t len, u8_t flags = TCP_WRITE_FLAG_COPY) const;
geiineuville 0:4570f87afab6 25
geiineuville 0:4570f87afab6 26 void recved(u32_t len) const;
geiineuville 0:4570f87afab6 27 u16_t sndbuf() const { return tcp_sndbuf(_pcb); }
geiineuville 0:4570f87afab6 28
geiineuville 0:4570f87afab6 29 void set_poll_timer(const u32_t &time) {
geiineuville 0:4570f87afab6 30 if(_pcb) {
geiineuville 0:4570f87afab6 31 _pcb->polltmr = time;
geiineuville 0:4570f87afab6 32 }
geiineuville 0:4570f87afab6 33 }
geiineuville 0:4570f87afab6 34
geiineuville 0:4570f87afab6 35 u32_t get_poll_interval() const {
geiineuville 0:4570f87afab6 36 return (_pcb)? _pcb->pollinterval: 0;
geiineuville 0:4570f87afab6 37 }
geiineuville 0:4570f87afab6 38
geiineuville 0:4570f87afab6 39 void set_poll_interval(const u32_t &value) {
geiineuville 0:4570f87afab6 40 if(_pcb) {
geiineuville 0:4570f87afab6 41 _pcb->pollinterval = value;
geiineuville 0:4570f87afab6 42 }
geiineuville 0:4570f87afab6 43 }
geiineuville 0:4570f87afab6 44
geiineuville 0:4570f87afab6 45 u32_t get_poll_timer() const {
geiineuville 0:4570f87afab6 46 return (_pcb)? _pcb->polltmr: 0;
geiineuville 0:4570f87afab6 47 }
geiineuville 0:4570f87afab6 48
geiineuville 0:4570f87afab6 49 // [iva2k] Expose remote IP
geiineuville 0:4570f87afab6 50 struct ip_addr get_remote_ip() const {
geiineuville 0:4570f87afab6 51 return _ipaddr;
geiineuville 0:4570f87afab6 52 }
geiineuville 0:4570f87afab6 53
geiineuville 0:4570f87afab6 54 protected:
geiineuville 0:4570f87afab6 55 TCPConnection();
geiineuville 0:4570f87afab6 56
geiineuville 0:4570f87afab6 57 /**
geiineuville 0:4570f87afab6 58 * Function to be called when more send buffer space is available.
geiineuville 0:4570f87afab6 59 * @param space the amount of bytes available
geiineuville 0:4570f87afab6 60 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:4570f87afab6 61 */
geiineuville 0:4570f87afab6 62 virtual err_t sent(u16_t space) = 0;
geiineuville 0:4570f87afab6 63
geiineuville 0:4570f87afab6 64 /**
geiineuville 0:4570f87afab6 65 * Function to be called when (in-sequence) data has arrived.
geiineuville 0:4570f87afab6 66 * @param p the packet buffer which arrived
geiineuville 0:4570f87afab6 67 * @param err an error argument (TODO: that is current always ERR_OK?)
geiineuville 0:4570f87afab6 68 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:4570f87afab6 69 */
geiineuville 0:4570f87afab6 70 virtual err_t recv(struct pbuf *p, err_t err) = 0;
geiineuville 0:4570f87afab6 71
geiineuville 0:4570f87afab6 72 /**
geiineuville 0:4570f87afab6 73 * Function to be called when a connection has been set up.
geiineuville 0:4570f87afab6 74 * @param pcb the tcp_pcb that now is connected
geiineuville 0:4570f87afab6 75 * @param err an error argument (TODO: that is current always ERR_OK?)
geiineuville 0:4570f87afab6 76 * @return value is currently ignored
geiineuville 0:4570f87afab6 77 */
geiineuville 0:4570f87afab6 78 virtual err_t connected(err_t err);
geiineuville 0:4570f87afab6 79
geiineuville 0:4570f87afab6 80 /**
geiineuville 0:4570f87afab6 81 * Function which is called periodically.
geiineuville 0:4570f87afab6 82 * The period can be adjusted in multiples of the TCP slow timer interval
geiineuville 0:4570f87afab6 83 * by changing tcp_pcb.polltmr.
geiineuville 0:4570f87afab6 84 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:4570f87afab6 85 */
geiineuville 0:4570f87afab6 86 virtual err_t poll() = 0;
geiineuville 0:4570f87afab6 87
geiineuville 0:4570f87afab6 88 /**
geiineuville 0:4570f87afab6 89 * Function to be called whenever a fatal error occurs.
geiineuville 0:4570f87afab6 90 * There is no pcb parameter since most of the times, the pcb is
geiineuville 0:4570f87afab6 91 * already deallocated (or there is no pcb) when this function is called.
geiineuville 0:4570f87afab6 92 * @param err an indication why the error callback is called:
geiineuville 0:4570f87afab6 93 * ERR_ABRT: aborted through tcp_abort or by a TCP timer
geiineuville 0:4570f87afab6 94 * ERR_RST: the connection was reset by the remote host
geiineuville 0:4570f87afab6 95 */
geiineuville 0:4570f87afab6 96 virtual void err(err_t err) = 0;
geiineuville 0:4570f87afab6 97
geiineuville 0:4570f87afab6 98 virtual void dnsreply(const char *hostname, struct ip_addr *addr) = 0;
geiineuville 0:4570f87afab6 99
geiineuville 0:4570f87afab6 100 err_t dnsrequest(const char *hostname, struct ip_addr *addr) const;
geiineuville 0:4570f87afab6 101
geiineuville 0:4570f87afab6 102 private:
geiineuville 0:4570f87afab6 103 static void dnsreply_callback(const char *name, struct ip_addr *ipaddr, void *arg);
geiineuville 0:4570f87afab6 104 static err_t connected_callback(void *arg, struct tcp_pcb *pcb, err_t err);
geiineuville 0:4570f87afab6 105 static err_t sent_callback(void *arg, struct tcp_pcb *pcb, u16_t space);
geiineuville 0:4570f87afab6 106 static err_t recv_callback(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err);
geiineuville 0:4570f87afab6 107 static err_t poll_callback(void *arg, struct tcp_pcb *pcb);
geiineuville 0:4570f87afab6 108 static void error_callback(void *arg, err_t erra);
geiineuville 0:4570f87afab6 109
geiineuville 0:4570f87afab6 110 protected:
geiineuville 0:4570f87afab6 111 TCPListener *_parent;
geiineuville 0:4570f87afab6 112 struct ip_addr _ipaddr;
geiineuville 0:4570f87afab6 113 u16_t _port;
geiineuville 0:4570f87afab6 114
geiineuville 0:4570f87afab6 115 friend class NetServer;
geiineuville 0:4570f87afab6 116 };
geiineuville 0:4570f87afab6 117
geiineuville 0:4570f87afab6 118 };
geiineuville 0:4570f87afab6 119
geiineuville 0:4570f87afab6 120 #endif /* TCPCONNECTION_H */