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Dependencies:   mbed

lwip/Core/TCPConnection.h@0:3c32eeb9292a, 2011-09-22 (annotated)

Committer:
geiineuville
Date:
Thu Sep 22 15:59:17 2011 +0000
Revision:
0:3c32eeb9292a
V4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
geiineuville 0:3c32eeb9292a 1 #ifndef TCPCONNECTION_H
geiineuville 0:3c32eeb9292a 2 #define TCPCONNECTION_H
geiineuville 0:3c32eeb9292a 3
geiineuville 0:3c32eeb9292a 4 #include "arch/cc.h"
geiineuville 0:3c32eeb9292a 5 #include "lwip/err.h"
geiineuville 0:3c32eeb9292a 6 //#include "lwip/tcp.h"
geiineuville 0:3c32eeb9292a 7
geiineuville 0:3c32eeb9292a 8 #include "TCPItem.h"
geiineuville 0:3c32eeb9292a 9
geiineuville 0:3c32eeb9292a 10 namespace mbed {
geiineuville 0:3c32eeb9292a 11
geiineuville 0:3c32eeb9292a 12 class NetServer;
geiineuville 0:3c32eeb9292a 13 class TCPListener;
geiineuville 0:3c32eeb9292a 14
geiineuville 0:3c32eeb9292a 15 class TCPConnection : public TCPItem {
geiineuville 0:3c32eeb9292a 16 public:
geiineuville 0:3c32eeb9292a 17 TCPConnection(struct ip_addr, u16_t);
geiineuville 0:3c32eeb9292a 18 TCPConnection(TCPListener *, struct tcp_pcb *);
geiineuville 0:3c32eeb9292a 19
geiineuville 0:3c32eeb9292a 20 virtual ~TCPConnection();
geiineuville 0:3c32eeb9292a 21
geiineuville 0:3c32eeb9292a 22 void connect();
geiineuville 0:3c32eeb9292a 23
geiineuville 0:3c32eeb9292a 24 err_t write(void *, u16_t len, u8_t flags = TCP_WRITE_FLAG_COPY) const;
geiineuville 0:3c32eeb9292a 25
geiineuville 0:3c32eeb9292a 26 void recved(u32_t len) const;
geiineuville 0:3c32eeb9292a 27 u16_t sndbuf() const { return tcp_sndbuf(_pcb); }
geiineuville 0:3c32eeb9292a 28
geiineuville 0:3c32eeb9292a 29 void set_poll_timer(const u32_t &time) {
geiineuville 0:3c32eeb9292a 30 if(_pcb) {
geiineuville 0:3c32eeb9292a 31 _pcb->polltmr = time;
geiineuville 0:3c32eeb9292a 32 }
geiineuville 0:3c32eeb9292a 33 }
geiineuville 0:3c32eeb9292a 34
geiineuville 0:3c32eeb9292a 35 u32_t get_poll_interval() const {
geiineuville 0:3c32eeb9292a 36 return (_pcb)? _pcb->pollinterval: 0;
geiineuville 0:3c32eeb9292a 37 }
geiineuville 0:3c32eeb9292a 38
geiineuville 0:3c32eeb9292a 39 void set_poll_interval(const u32_t &value) {
geiineuville 0:3c32eeb9292a 40 if(_pcb) {
geiineuville 0:3c32eeb9292a 41 _pcb->pollinterval = value;
geiineuville 0:3c32eeb9292a 42 }
geiineuville 0:3c32eeb9292a 43 }
geiineuville 0:3c32eeb9292a 44
geiineuville 0:3c32eeb9292a 45 u32_t get_poll_timer() const {
geiineuville 0:3c32eeb9292a 46 return (_pcb)? _pcb->polltmr: 0;
geiineuville 0:3c32eeb9292a 47 }
geiineuville 0:3c32eeb9292a 48
geiineuville 0:3c32eeb9292a 49 // [iva2k] Expose remote IP
geiineuville 0:3c32eeb9292a 50 struct ip_addr get_remote_ip() const {
geiineuville 0:3c32eeb9292a 51 return _ipaddr;
geiineuville 0:3c32eeb9292a 52 }
geiineuville 0:3c32eeb9292a 53
geiineuville 0:3c32eeb9292a 54 protected:
geiineuville 0:3c32eeb9292a 55 TCPConnection();
geiineuville 0:3c32eeb9292a 56
geiineuville 0:3c32eeb9292a 57 /**
geiineuville 0:3c32eeb9292a 58 * Function to be called when more send buffer space is available.
geiineuville 0:3c32eeb9292a 59 * @param space the amount of bytes available
geiineuville 0:3c32eeb9292a 60 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:3c32eeb9292a 61 */
geiineuville 0:3c32eeb9292a 62 virtual err_t sent(u16_t space) = 0;
geiineuville 0:3c32eeb9292a 63
geiineuville 0:3c32eeb9292a 64 /**
geiineuville 0:3c32eeb9292a 65 * Function to be called when (in-sequence) data has arrived.
geiineuville 0:3c32eeb9292a 66 * @param p the packet buffer which arrived
geiineuville 0:3c32eeb9292a 67 * @param err an error argument (TODO: that is current always ERR_OK?)
geiineuville 0:3c32eeb9292a 68 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:3c32eeb9292a 69 */
geiineuville 0:3c32eeb9292a 70 virtual err_t recv(struct pbuf *p, err_t err) = 0;
geiineuville 0:3c32eeb9292a 71
geiineuville 0:3c32eeb9292a 72 /**
geiineuville 0:3c32eeb9292a 73 * Function to be called when a connection has been set up.
geiineuville 0:3c32eeb9292a 74 * @param pcb the tcp_pcb that now is connected
geiineuville 0:3c32eeb9292a 75 * @param err an error argument (TODO: that is current always ERR_OK?)
geiineuville 0:3c32eeb9292a 76 * @return value is currently ignored
geiineuville 0:3c32eeb9292a 77 */
geiineuville 0:3c32eeb9292a 78 virtual err_t connected(err_t err);
geiineuville 0:3c32eeb9292a 79
geiineuville 0:3c32eeb9292a 80 /**
geiineuville 0:3c32eeb9292a 81 * Function which is called periodically.
geiineuville 0:3c32eeb9292a 82 * The period can be adjusted in multiples of the TCP slow timer interval
geiineuville 0:3c32eeb9292a 83 * by changing tcp_pcb.polltmr.
geiineuville 0:3c32eeb9292a 84 * @return ERR_OK: try to send some data by calling tcp_output
geiineuville 0:3c32eeb9292a 85 */
geiineuville 0:3c32eeb9292a 86 virtual err_t poll() = 0;
geiineuville 0:3c32eeb9292a 87
geiineuville 0:3c32eeb9292a 88 /**
geiineuville 0:3c32eeb9292a 89 * Function to be called whenever a fatal error occurs.
geiineuville 0:3c32eeb9292a 90 * There is no pcb parameter since most of the times, the pcb is
geiineuville 0:3c32eeb9292a 91 * already deallocated (or there is no pcb) when this function is called.
geiineuville 0:3c32eeb9292a 92 * @param err an indication why the error callback is called:
geiineuville 0:3c32eeb9292a 93 * ERR_ABRT: aborted through tcp_abort or by a TCP timer
geiineuville 0:3c32eeb9292a 94 * ERR_RST: the connection was reset by the remote host
geiineuville 0:3c32eeb9292a 95 */
geiineuville 0:3c32eeb9292a 96 virtual void err(err_t err) = 0;
geiineuville 0:3c32eeb9292a 97
geiineuville 0:3c32eeb9292a 98 virtual void dnsreply(const char *hostname, struct ip_addr *addr) = 0;
geiineuville 0:3c32eeb9292a 99
geiineuville 0:3c32eeb9292a 100 err_t dnsrequest(const char *hostname, struct ip_addr *addr) const;
geiineuville 0:3c32eeb9292a 101
geiineuville 0:3c32eeb9292a 102 private:
geiineuville 0:3c32eeb9292a 103 static void dnsreply_callback(const char *name, struct ip_addr *ipaddr, void *arg);
geiineuville 0:3c32eeb9292a 104 static err_t connected_callback(void *arg, struct tcp_pcb *pcb, err_t err);
geiineuville 0:3c32eeb9292a 105 static err_t sent_callback(void *arg, struct tcp_pcb *pcb, u16_t space);
geiineuville 0:3c32eeb9292a 106 static err_t recv_callback(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err);
geiineuville 0:3c32eeb9292a 107 static err_t poll_callback(void *arg, struct tcp_pcb *pcb);
geiineuville 0:3c32eeb9292a 108 static void error_callback(void *arg, err_t erra);
geiineuville 0:3c32eeb9292a 109
geiineuville 0:3c32eeb9292a 110 protected:
geiineuville 0:3c32eeb9292a 111 TCPListener *_parent;
geiineuville 0:3c32eeb9292a 112 struct ip_addr _ipaddr;
geiineuville 0:3c32eeb9292a 113 u16_t _port;
geiineuville 0:3c32eeb9292a 114
geiineuville 0:3c32eeb9292a 115 friend class NetServer;
geiineuville 0:3c32eeb9292a 116 };
geiineuville 0:3c32eeb9292a 117
geiineuville 0:3c32eeb9292a 118 };
geiineuville 0:3c32eeb9292a 119
geiineuville 0:3c32eeb9292a 120 #endif /* TCPCONNECTION_H */