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Dependencies:   mbed

lwip/Core/TCPConnection.h@0:441400ffd086, 2011-09-02 (annotated)

Committer:
geiineuville
Date:
Fri Sep 02 08:36:24 2011 +0000
Revision:
0:441400ffd086
V0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
geiineuville 0:441400ffd086 1 #ifndef TCPCONNECTION_H
geiineuville 0:441400ffd086 2 #define TCPCONNECTION_H
geiineuville 0:441400ffd086 3
geiineuville 0:441400ffd086 4 #include "arch/cc.h"
geiineuville 0:441400ffd086 5 #include "lwip/err.h"
geiineuville 0:441400ffd086 6 //#include "lwip/tcp.h"
geiineuville 0:441400ffd086 7
geiineuville 0:441400ffd086 8 #include "TCPItem.h"
geiineuville 0:441400ffd086 9
geiineuville 0:441400ffd086 10 namespace mbed {
geiineuville 0:441400ffd086 11
geiineuville 0:441400ffd086 12 class NetServer;
geiineuville 0:441400ffd086 13 class TCPListener;
geiineuville 0:441400ffd086 14
geiineuville 0:441400ffd086 15 class TCPConnection : public TCPItem {
geiineuville 0:441400ffd086 16 public:
geiineuville 0:441400ffd086 17 TCPConnection(struct ip_addr, u16_t);
geiineuville 0:441400ffd086 18 TCPConnection(TCPListener *, struct tcp_pcb *);
geiineuville 0:441400ffd086 19
geiineuville 0:441400ffd086 20 virtual ~TCPConnection();
geiineuville 0:441400ffd086 21
geiineuville 0:441400ffd086 22 void connect();
geiineuville 0:441400ffd086 23
geiineuville 0:441400ffd086 24 err_t write(void *, u16_t len, u8_t flags = TCP_WRITE_FLAG_COPY) const;
geiineuville 0:441400ffd086 25
geiineuville 0:441400ffd086 26 void recved(u32_t len) const;
geiineuville 0:441400ffd086 27 u16_t sndbuf() const { return tcp_sndbuf(_pcb); }
geiineuville 0:441400ffd086 28
geiineuville 0:441400ffd086 29 void set_poll_timer(const u32_t &time) {
geiineuville 0:441400ffd086 30 if(_pcb) {
geiineuville 0:441400ffd086 31 _pcb->polltmr = time;
geiineuville 0:441400ffd086 32 }
geiineuville 0:441400ffd086 33 }
geiineuville 0:441400ffd086 34
geiineuville 0:441400ffd086 35 u32_t get_poll_interval() const {
geiineuville 0:441400ffd086 36 return (_pcb)? _pcb->pollinterval: 0;
geiineuville 0:441400ffd086 37 }
geiineuville 0:441400ffd086 38
geiineuville 0:441400ffd086 39 void set_poll_interval(const u32_t &value) {
geiineuville 0:441400ffd086 40 if(_pcb) {
geiineuville 0:441400ffd086 41 _pcb->pollinterval = value;
geiineuville 0:441400ffd086 42 }
geiineuville 0:441400ffd086 43 }
geiineuville 0:441400ffd086 44
geiineuville 0:441400ffd086 45 u32_t get_poll_timer() const {
geiineuville 0:441400ffd086 46 return (_pcb)? _pcb->polltmr: 0;
geiineuville 0:441400ffd086 47 }
geiineuville 0:441400ffd086 48
geiineuville 0:441400ffd086 49 // [iva2k] Expose remote IP
geiineuville 0:441400ffd086 50 struct ip_addr get_remote_ip() const {
geiineuville 0:441400ffd086 51 return _ipaddr;
geiineuville 0:441400ffd086 52 }
geiineuville 0:441400ffd086 53
geiineuville 0:441400ffd086 54 protected:
geiineuville 0:441400ffd086 55 TCPConnection();
geiineuville 0:441400ffd086 56
geiineuville 0:441400ffd086 57 /**
geiineuville 0:441400ffd086 58 * Function to be called when more send buffer space is available.
geiineuville 0:441400ffd086 59 * @param space the amount of bytes available
geiineuville 0:441400ffd086 60 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:441400ffd086 61 */
geiineuville 0:441400ffd086 62 virtual err_t sent(u16_t space) = 0;
geiineuville 0:441400ffd086 63
geiineuville 0:441400ffd086 64 /**
geiineuville 0:441400ffd086 65 * Function to be called when (in-sequence) data has arrived.
geiineuville 0:441400ffd086 66 * @param p the packet buffer which arrived
geiineuville 0:441400ffd086 67 * @param err an error argument (TODO: that is current always ERR_OK?)
geiineuville 0:441400ffd086 68 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:441400ffd086 69 */
geiineuville 0:441400ffd086 70 virtual err_t recv(struct pbuf *p, err_t err) = 0;
geiineuville 0:441400ffd086 71
geiineuville 0:441400ffd086 72 /**
geiineuville 0:441400ffd086 73 * Function to be called when a connection has been set up.
geiineuville 0:441400ffd086 74 * @param pcb the tcp_pcb that now is connected
geiineuville 0:441400ffd086 75 * @param err an error argument (TODO: that is current always ERR_OK?)
geiineuville 0:441400ffd086 76 * @return value is currently ignored
geiineuville 0:441400ffd086 77 */
geiineuville 0:441400ffd086 78 virtual err_t connected(err_t err);
geiineuville 0:441400ffd086 79
geiineuville 0:441400ffd086 80 /**
geiineuville 0:441400ffd086 81 * Function which is called periodically.
geiineuville 0:441400ffd086 82 * The period can be adjusted in multiples of the TCP slow timer interval
geiineuville 0:441400ffd086 83 * by changing tcp_pcb.polltmr.
geiineuville 0:441400ffd086 84 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:441400ffd086 85 */
geiineuville 0:441400ffd086 86 virtual err_t poll() = 0;
geiineuville 0:441400ffd086 87
geiineuville 0:441400ffd086 88 /**
geiineuville 0:441400ffd086 89 * Function to be called whenever a fatal error occurs.
geiineuville 0:441400ffd086 90 * There is no pcb parameter since most of the times, the pcb is
geiineuville 0:441400ffd086 91 * already deallocated (or there is no pcb) when this function is called.
geiineuville 0:441400ffd086 92 * @param err an indication why the error callback is called:
geiineuville 0:441400ffd086 93 * ERR_ABRT: aborted through tcp_abort or by a TCP timer
geiineuville 0:441400ffd086 94 * ERR_RST: the connection was reset by the remote host
geiineuville 0:441400ffd086 95 */
geiineuville 0:441400ffd086 96 virtual void err(err_t err) = 0;
geiineuville 0:441400ffd086 97
geiineuville 0:441400ffd086 98 virtual void dnsreply(const char *hostname, struct ip_addr *addr) = 0;
geiineuville 0:441400ffd086 99
geiineuville 0:441400ffd086 100 err_t dnsrequest(const char *hostname, struct ip_addr *addr) const;
geiineuville 0:441400ffd086 101
geiineuville 0:441400ffd086 102 private:
geiineuville 0:441400ffd086 103 static void dnsreply_callback(const char *name, struct ip_addr *ipaddr, void *arg);
geiineuville 0:441400ffd086 104 static err_t connected_callback(void *arg, struct tcp_pcb *pcb, err_t err);
geiineuville 0:441400ffd086 105 static err_t sent_callback(void *arg, struct tcp_pcb *pcb, u16_t space);
geiineuville 0:441400ffd086 106 static err_t recv_callback(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err);
geiineuville 0:441400ffd086 107 static err_t poll_callback(void *arg, struct tcp_pcb *pcb);
geiineuville 0:441400ffd086 108 static void error_callback(void *arg, err_t erra);
geiineuville 0:441400ffd086 109
geiineuville 0:441400ffd086 110 protected:
geiineuville 0:441400ffd086 111 TCPListener *_parent;
geiineuville 0:441400ffd086 112 struct ip_addr _ipaddr;
geiineuville 0:441400ffd086 113 u16_t _port;
geiineuville 0:441400ffd086 114
geiineuville 0:441400ffd086 115 friend class NetServer;
geiineuville 0:441400ffd086 116 };
geiineuville 0:441400ffd086 117
geiineuville 0:441400ffd086 118 };
geiineuville 0:441400ffd086 119
geiineuville 0:441400ffd086 120 #endif /* TCPCONNECTION_H */