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00018 #include <oasys/util/OptParser.h>
00019
00020 #include "ConnectionConvergenceLayer.h"
00021 #include "CLConnection.h"
00022 #include "bundling/BundleDaemon.h"
00023
00024 namespace dtn {
00025
00026
00027 ConnectionConvergenceLayer::LinkParams::LinkParams(bool init_defaults)
00028 : busy_queue_depth_(10),
00029 reactive_frag_enabled_(true),
00030 sendbuf_len_(32768),
00031 recvbuf_len_(32768),
00032 data_timeout_(30000),
00033 test_read_delay_(0),
00034 test_write_delay_(0),
00035 test_recv_delay_(0)
00036 {
00037 (void)init_defaults;
00038 }
00039
00040
00041 ConnectionConvergenceLayer::ConnectionConvergenceLayer(const char* classname,
00042 const char* cl_name)
00043 : ConvergenceLayer(classname, cl_name)
00044 {
00045 }
00046
00047
00048 bool
00049 ConnectionConvergenceLayer::parse_link_params(LinkParams* params,
00050 int argc, const char** argv,
00051 const char** invalidp)
00052 {
00053 oasys::OptParser p;
00054
00055 p.addopt(new oasys::UIntOpt("busy_queue_depth",
00056 ¶ms->busy_queue_depth_));
00057 p.addopt(new oasys::BoolOpt("reactive_frag_enabled",
00058 ¶ms->reactive_frag_enabled_));
00059 p.addopt(new oasys::UIntOpt("sendbuf_len", ¶ms->sendbuf_len_));
00060 p.addopt(new oasys::UIntOpt("recvbuf_len", ¶ms->recvbuf_len_));
00061 p.addopt(new oasys::UIntOpt("data_timeout", ¶ms->data_timeout_));
00062
00063 p.addopt(new oasys::UIntOpt("test_read_delay",
00064 ¶ms->test_read_delay_));
00065 p.addopt(new oasys::UIntOpt("test_write_delay",
00066 ¶ms->test_write_delay_));
00067 p.addopt(new oasys::UIntOpt("test_recv_delay",
00068 ¶ms->test_recv_delay_));
00069
00070 if (! p.parse(argc, argv, invalidp)) {
00071 return false;
00072 }
00073
00074 if (params->sendbuf_len_ == 0) {
00075 *invalidp = "sendbuf_len must not be zero";
00076 return false;
00077 }
00078
00079 if (params->recvbuf_len_ == 0) {
00080 *invalidp = "recvbuf_len must not be zero";
00081 return false;
00082 }
00083
00084 return true;
00085 }
00086
00087
00088 void
00089 ConnectionConvergenceLayer::dump_link(Link* link, oasys::StringBuffer* buf)
00090 {
00091 LinkParams* params = dynamic_cast<LinkParams*>(link->cl_info());
00092 ASSERT(params != NULL);
00093
00094 buf->appendf("busy_queue_depth: %u\n", params->busy_queue_depth_);
00095 buf->appendf("reactive_frag_enabled: %u\n", params->reactive_frag_enabled_);
00096 buf->appendf("sendbuf_len: %u\n", params->sendbuf_len_);
00097 buf->appendf("recvbuf_len: %u\n", params->recvbuf_len_);
00098 buf->appendf("data_timeout: %u\n", params->data_timeout_);
00099 buf->appendf("test_read_delay: %u\n", params->test_read_delay_);
00100 buf->appendf("test_write_delay: %u\n", params->test_write_delay_);
00101 buf->appendf("test_recv_delay: %u\n",params->test_recv_delay_);
00102 }
00103
00104
00105 bool
00106 ConnectionConvergenceLayer::init_link(Link* link, int argc, const char* argv[])
00107 {
00108 log_debug("adding %s link %s", link->type_str(), link->nexthop());
00109
00110
00111
00112 LinkParams* params = new_link_params();
00113
00114
00115
00116
00117
00118 parse_nexthop(link, params);
00119
00120 const char* invalid;
00121 if (! parse_link_params(params, argc, argv, &invalid)) {
00122 log_err("error parsing link options: invalid option '%s'", invalid);
00123 delete params;
00124 return false;
00125 }
00126
00127 if (! finish_init_link(link, params)) {
00128 log_err("error in finish_init_link");
00129 delete params;
00130 return false;
00131 }
00132
00133 link->set_cl_info(params);
00134
00135 return true;
00136 }
00137
00138
00139 bool
00140 ConnectionConvergenceLayer::finish_init_link(Link* link, LinkParams* params)
00141 {
00142 (void)link;
00143 (void)params;
00144 return true;
00145 }
00146
00147
00148 bool
00149 ConnectionConvergenceLayer::reconfigure_link(Link* link,
00150 int argc, const char* argv[])
00151 {
00152 LinkParams* params = dynamic_cast<LinkParams*>(link->cl_info());
00153 ASSERT(params != NULL);
00154
00155 const char* invalid;
00156 if (! parse_link_params(params, argc, argv, &invalid)) {
00157 log_err("reconfigure_link: invalid parameter %s", invalid);
00158 return false;
00159 }
00160
00161 if (link->isopen()) {
00162 LinkParams* params = dynamic_cast<LinkParams*>(link->cl_info());
00163 ASSERT(params != NULL);
00164
00165 CLConnection* conn = dynamic_cast<CLConnection*>(link->contact()->cl_info());
00166 ASSERT(conn != NULL);
00167
00168 if ((params->sendbuf_len_ != conn->sendbuf_.size()) &&
00169 (params->sendbuf_len_ >= conn->sendbuf_.fullbytes()))
00170 {
00171 log_info("resizing link *%p send buffer from %zu -> %u",
00172 link, conn->sendbuf_.size(), params->sendbuf_len_);
00173 conn->sendbuf_.set_size(params->sendbuf_len_);
00174 }
00175
00176 if ((params->recvbuf_len_ != conn->recvbuf_.size()) &&
00177 (params->recvbuf_len_ >= conn->recvbuf_.fullbytes()))
00178 {
00179 log_info("resizing link *%p recv buffer from %zu -> %u",
00180 link, conn->recvbuf_.size(), params->recvbuf_len_);
00181 conn->recvbuf_.set_size(params->recvbuf_len_);
00182 }
00183 }
00184
00185 return true;
00186 }
00187
00188
00189 bool
00190 ConnectionConvergenceLayer::open_contact(const ContactRef& contact)
00191 {
00192 Link* link = contact->link();
00193 log_debug("opening contact on link *%p", link);
00194
00195 LinkParams* params = dynamic_cast<LinkParams*>(link->cl_info());
00196 ASSERT(params != NULL);
00197
00198
00199
00200 CLConnection* conn = new_connection(params);
00201 conn->set_contact(contact);
00202 contact->set_cl_info(conn);
00203 conn->start();
00204
00205 return true;
00206 }
00207
00208
00209 bool
00210 ConnectionConvergenceLayer::close_contact(const ContactRef& contact)
00211 {
00212 log_info("close_contact *%p", contact.object());
00213
00214 CLConnection* conn = dynamic_cast<CLConnection*>(contact->cl_info());
00215 ASSERT(conn != NULL);
00216
00217
00218
00219 if (! conn->contact_broken_) {
00220 conn->cmdqueue_.push_back(
00221 CLConnection::CLMsg(CLConnection::CLMSG_BREAK_CONTACT));
00222 }
00223
00224 while (!conn->is_stopped()) {
00225 log_debug("waiting for connection thread to stop...");
00226 usleep(100000);
00227 oasys::Thread::yield();
00228 }
00229
00230 conn->close_contact();
00231 delete conn;
00232
00233 contact->set_cl_info(NULL);
00234
00235 return true;
00236 }
00237
00238
00239 void
00240 ConnectionConvergenceLayer::send_bundle(const ContactRef& contact,
00241 Bundle* bundle)
00242 {
00243 log_debug("send_bundle *%p to *%p", bundle, contact.object());
00244
00245 CLConnection* conn = dynamic_cast<CLConnection*>(contact->cl_info());
00246 ASSERT(conn != NULL);
00247
00248 conn->queue_bundle(bundle);
00249 }
00250
00251 }