John Lowe
Embedded WebSockets Experiment
Core/TCPCallbackConnection.h@0:6dee052a3fa4, 2011-07-26 (annotated)
- Committer:
- nandgate
- Date:
- Tue Jul 26 05:30:53 2011 +0000
- Revision:
- 0:6dee052a3fa4
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| nandgate | 0:6dee052a3fa4 | 1 | #ifndef TCPCALLBACKCONNECTION_H |
| nandgate | 0:6dee052a3fa4 | 2 | #define TCPCALLBACKCONNECTION_H |
| nandgate | 0:6dee052a3fa4 | 3 | |
| nandgate | 0:6dee052a3fa4 | 4 | #include "TCPConnection.h" |
| nandgate | 0:6dee052a3fa4 | 5 | |
| nandgate | 0:6dee052a3fa4 | 6 | namespace mbed { |
| nandgate | 0:6dee052a3fa4 | 7 | |
| nandgate | 0:6dee052a3fa4 | 8 | #define NO_SENT_FNC ((err_t (*)(TCPCallbackConnection *, u16_t))NULL) |
| nandgate | 0:6dee052a3fa4 | 9 | #define NO_RECV_FNC ((err_t (*)(TCPCallbackConnection *, struct pbuf *, err_t))NULL) |
| nandgate | 0:6dee052a3fa4 | 10 | #define NO_POLL_FNC ((err_t (*)(TCPCallbackConnection *))NULL) |
| nandgate | 0:6dee052a3fa4 | 11 | #define NO_ACCEPT_FNC ((err_t (*)(TCPCallbackConnection *, struct tcp_pcb *, err_t))NULL) |
| nandgate | 0:6dee052a3fa4 | 12 | #define NO_CONNECT_FNC ((err_t (*)(TCPCallbackConnection *, err_t))NULL) |
| nandgate | 0:6dee052a3fa4 | 13 | #define NO_ERR_FNC ((void (*)(TCPCallbackConnection *, err_t))NULL) |
| nandgate | 0:6dee052a3fa4 | 14 | |
| nandgate | 0:6dee052a3fa4 | 15 | |
| nandgate | 0:6dee052a3fa4 | 16 | class TCPCallbackConnection : public TCPConnection { |
| nandgate | 0:6dee052a3fa4 | 17 | public: |
| nandgate | 0:6dee052a3fa4 | 18 | TCPCallbackConnection(struct ip_addr ip_addr, u16_t port, |
| nandgate | 0:6dee052a3fa4 | 19 | err_t (*psent)(TCPCallbackConnection *, u16_t), |
| nandgate | 0:6dee052a3fa4 | 20 | err_t (*precv)(TCPCallbackConnection *, struct pbuf *, err_t), |
| nandgate | 0:6dee052a3fa4 | 21 | err_t (*ppoll)(TCPCallbackConnection *), |
| nandgate | 0:6dee052a3fa4 | 22 | err_t (*pconnected)(TCPCallbackConnection *, err_t), |
| nandgate | 0:6dee052a3fa4 | 23 | void (*perr )(TCPCallbackConnection *, err_t)) |
| nandgate | 0:6dee052a3fa4 | 24 | : TCPConnection(ip_addr, port) { |
| nandgate | 0:6dee052a3fa4 | 25 | _sent = psent; |
| nandgate | 0:6dee052a3fa4 | 26 | _recv = precv; |
| nandgate | 0:6dee052a3fa4 | 27 | _poll = ppoll; |
| nandgate | 0:6dee052a3fa4 | 28 | _connected = pconnected; |
| nandgate | 0:6dee052a3fa4 | 29 | _err = perr; |
| nandgate | 0:6dee052a3fa4 | 30 | } |
| nandgate | 0:6dee052a3fa4 | 31 | |
| nandgate | 0:6dee052a3fa4 | 32 | TCPCallbackConnection(TCPListener *parent, struct tcp_pcb *npcb, |
| nandgate | 0:6dee052a3fa4 | 33 | err_t (*psent)(TCPCallbackConnection *, u16_t), |
| nandgate | 0:6dee052a3fa4 | 34 | err_t (*precv)(TCPCallbackConnection *, struct pbuf *, err_t), |
| nandgate | 0:6dee052a3fa4 | 35 | err_t (*ppoll)(TCPCallbackConnection *), |
| nandgate | 0:6dee052a3fa4 | 36 | err_t (*pconnected)(TCPCallbackConnection *, err_t), |
| nandgate | 0:6dee052a3fa4 | 37 | void (*perr )(TCPCallbackConnection *, err_t)) |
| nandgate | 0:6dee052a3fa4 | 38 | : TCPConnection(parent, npcb) { |
| nandgate | 0:6dee052a3fa4 | 39 | _sent = psent; |
| nandgate | 0:6dee052a3fa4 | 40 | _recv = precv; |
| nandgate | 0:6dee052a3fa4 | 41 | _poll = ppoll; |
| nandgate | 0:6dee052a3fa4 | 42 | _connected = pconnected; |
| nandgate | 0:6dee052a3fa4 | 43 | _err = perr; |
| nandgate | 0:6dee052a3fa4 | 44 | } |
| nandgate | 0:6dee052a3fa4 | 45 | |
| nandgate | 0:6dee052a3fa4 | 46 | private: |
| nandgate | 0:6dee052a3fa4 | 47 | /* |
| nandgate | 0:6dee052a3fa4 | 48 | * Function to be called when more send buffer space is available. |
| nandgate | 0:6dee052a3fa4 | 49 | * @param space the amount of bytes available |
| nandgate | 0:6dee052a3fa4 | 50 | * @return ERR_OK: try to send some data by calling tcp_output |
| nandgate | 0:6dee052a3fa4 | 51 | */ |
| nandgate | 0:6dee052a3fa4 | 52 | virtual err_t sent(u16_t space) { |
| nandgate | 0:6dee052a3fa4 | 53 | if(_sent) { |
| nandgate | 0:6dee052a3fa4 | 54 | return (_sent)(this, space); |
| nandgate | 0:6dee052a3fa4 | 55 | } else { |
| nandgate | 0:6dee052a3fa4 | 56 | return ERR_OK; |
| nandgate | 0:6dee052a3fa4 | 57 | } |
| nandgate | 0:6dee052a3fa4 | 58 | } |
| nandgate | 0:6dee052a3fa4 | 59 | |
| nandgate | 0:6dee052a3fa4 | 60 | /* |
| nandgate | 0:6dee052a3fa4 | 61 | * Function to be called when (in-sequence) data has arrived. |
| nandgate | 0:6dee052a3fa4 | 62 | * @param p the packet buffer which arrived |
| nandgate | 0:6dee052a3fa4 | 63 | * @param err an error argument (TODO: that is current always ERR_OK?) |
| nandgate | 0:6dee052a3fa4 | 64 | * @return ERR_OK: try to send some data by calling tcp_output |
| nandgate | 0:6dee052a3fa4 | 65 | */ |
| nandgate | 0:6dee052a3fa4 | 66 | virtual err_t recv(struct pbuf *p, err_t err) { |
| nandgate | 0:6dee052a3fa4 | 67 | if(_recv) { |
| nandgate | 0:6dee052a3fa4 | 68 | return (_recv)(this, p, err); |
| nandgate | 0:6dee052a3fa4 | 69 | } else { |
| nandgate | 0:6dee052a3fa4 | 70 | return ERR_OK; |
| nandgate | 0:6dee052a3fa4 | 71 | } |
| nandgate | 0:6dee052a3fa4 | 72 | } |
| nandgate | 0:6dee052a3fa4 | 73 | |
| nandgate | 0:6dee052a3fa4 | 74 | /* |
| nandgate | 0:6dee052a3fa4 | 75 | * Function which is called periodically. |
| nandgate | 0:6dee052a3fa4 | 76 | * The period can be adjusted in multiples of the TCP slow timer interval |
| nandgate | 0:6dee052a3fa4 | 77 | * by changing tcp_pcb.polltmr. |
| nandgate | 0:6dee052a3fa4 | 78 | * @return ERR_OK: try to send some data by calling tcp_output |
| nandgate | 0:6dee052a3fa4 | 79 | */ |
| nandgate | 0:6dee052a3fa4 | 80 | virtual err_t poll() { |
| nandgate | 0:6dee052a3fa4 | 81 | if(_poll) { |
| nandgate | 0:6dee052a3fa4 | 82 | return (_poll)(this); |
| nandgate | 0:6dee052a3fa4 | 83 | } else { |
| nandgate | 0:6dee052a3fa4 | 84 | return ERR_OK; |
| nandgate | 0:6dee052a3fa4 | 85 | } |
| nandgate | 0:6dee052a3fa4 | 86 | } |
| nandgate | 0:6dee052a3fa4 | 87 | |
| nandgate | 0:6dee052a3fa4 | 88 | virtual err_t connected(err_t err) { |
| nandgate | 0:6dee052a3fa4 | 89 | err = TCPConnection::connected(err); |
| nandgate | 0:6dee052a3fa4 | 90 | if(_connected) { |
| nandgate | 0:6dee052a3fa4 | 91 | return (_connected)(this, err); |
| nandgate | 0:6dee052a3fa4 | 92 | } else { |
| nandgate | 0:6dee052a3fa4 | 93 | return ERR_OK; |
| nandgate | 0:6dee052a3fa4 | 94 | } |
| nandgate | 0:6dee052a3fa4 | 95 | } |
| nandgate | 0:6dee052a3fa4 | 96 | |
| nandgate | 0:6dee052a3fa4 | 97 | /* |
| nandgate | 0:6dee052a3fa4 | 98 | * Function to be called whenever a fatal error occurs. |
| nandgate | 0:6dee052a3fa4 | 99 | * There is no pcb parameter since most of the times, the pcb is |
| nandgate | 0:6dee052a3fa4 | 100 | * already deallocated (or there is no pcb) when this function is called. |
| nandgate | 0:6dee052a3fa4 | 101 | * @param err an indication why the error callback is called: |
| nandgate | 0:6dee052a3fa4 | 102 | * ERR_ABRT: aborted through tcp_abort or by a TCP timer |
| nandgate | 0:6dee052a3fa4 | 103 | * ERR_RST: the connection was reset by the remote host |
| nandgate | 0:6dee052a3fa4 | 104 | */ |
| nandgate | 0:6dee052a3fa4 | 105 | virtual void err(err_t erra) { |
| nandgate | 0:6dee052a3fa4 | 106 | if(_err) { |
| nandgate | 0:6dee052a3fa4 | 107 | (_err)(this, erra); |
| nandgate | 0:6dee052a3fa4 | 108 | } |
| nandgate | 0:6dee052a3fa4 | 109 | } |
| nandgate | 0:6dee052a3fa4 | 110 | |
| nandgate | 0:6dee052a3fa4 | 111 | virtual void dnsreply(const char *hostname, struct ip_addr *addr) {}; |
| nandgate | 0:6dee052a3fa4 | 112 | |
| nandgate | 0:6dee052a3fa4 | 113 | err_t (*_sent)(TCPCallbackConnection *, u16_t); |
| nandgate | 0:6dee052a3fa4 | 114 | err_t (*_recv)(TCPCallbackConnection *, struct pbuf *p, err_t err); |
| nandgate | 0:6dee052a3fa4 | 115 | err_t (*_poll)(TCPCallbackConnection *); |
| nandgate | 0:6dee052a3fa4 | 116 | err_t (*_accept)(TCPCallbackConnection *, struct tcp_pcb *newpcb, err_t err); |
| nandgate | 0:6dee052a3fa4 | 117 | err_t (*_connected)(TCPCallbackConnection *, err_t err); |
| nandgate | 0:6dee052a3fa4 | 118 | void (*_err )(TCPCallbackConnection *, err_t); |
| nandgate | 0:6dee052a3fa4 | 119 | }; |
| nandgate | 0:6dee052a3fa4 | 120 | |
| nandgate | 0:6dee052a3fa4 | 121 | }; |
| nandgate | 0:6dee052a3fa4 | 122 | |
| nandgate | 0:6dee052a3fa4 | 123 | #endif /* TCPCALLBACKCONNECTION_H */ |